From 243d5d39d24ce24b0a6614672b44d1f831249b04 Mon Sep 17 00:00:00 2001
From: ccsens_zhengzhichuan <ccsens_zhengzhichuan>
Date: Tue, 25 Nov 2025 13:45:36 +0800
Subject: [PATCH] =?UTF-8?q?=E6=B6=88=E6=81=AF=E6=8E=A5=E5=8F=A3=E5=AE=8C?=
 =?UTF-8?q?=E6=88=90?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 pom.xml                                       |  13 +
 .../client/session/SessionController.java     |  77 ++
 research-generator/src/main/resources/mbg.xml |  10 +-
 .../research/system/domain/dto/GroupDto.java  |   2 +-
 .../domain/dto/ResResearchIntegrityDto.java   |   1 +
 .../system/domain/dto/SessionDto.java         |  66 ++
 .../system/domain/po/ChatContactList.java     | 116 +++
 .../domain/po/ChatContactListExample.java     | 810 +++++++++++++++
 .../domain/po/ChatMessageReadStatus.java      | 139 +++
 .../po/ChatMessageReadStatusExample.java      | 881 ++++++++++++++++
 .../system/domain/po/ChatSessionMembers.java  | 139 +++
 .../domain/po/ChatSessionMembersExample.java  | 891 ++++++++++++++++
 .../system/domain/po/ChatSessionMessages.java | 150 +++
 .../domain/po/ChatSessionMessagesExample.java | 961 ++++++++++++++++++
 .../system/domain/po/ChatSessions.java        | 139 +++
 .../system/domain/po/ChatSessionsExample.java | 901 ++++++++++++++++
 .../research/system/domain/vo/GroupVO.java    |   2 +-
 .../domain/vo/ResResearchIntegrityVo.java     |   1 +
 .../research/system/domain/vo/SessionVo.java  |  87 ++
 .../system/persist/dao/SessionDao.java        |  23 +
 .../persist/mapper/ChatContactListMapper.java |  20 +
 .../mapper/ChatMessageReadStatusMapper.java   |  28 +
 .../mapper/ChatSessionMembersMapper.java      |  28 +
 .../mapper/ChatSessionMessagesMapper.java     |  28 +
 .../persist/mapper/ChatSessionsMapper.java    |  28 +
 .../system/service/SessionService.java        |  29 +
 .../service/impl/KtsGroupServiceImpl.java     |   1 +
 .../service/impl/SessionServiceImpl.java      | 173 ++++
 .../main/resources/mapper/dao/KtsGroupDao.xml |   2 +-
 .../mapper/dao/ResResearchIntegrityDao.xml    |   1 +
 .../main/resources/mapper/dao/SessionDao.xml  |  94 ++
 .../mapper/system/ChatContactListMapper.xml   | 215 ++++
 .../system/ChatMessageReadStatusMapper.xml    | 300 ++++++
 .../system/ChatSessionMembersMapper.xml       | 300 ++++++
 .../system/ChatSessionMessagesMapper.xml      | 317 ++++++
 .../mapper/system/ChatSessionsMapper.xml      | 300 ++++++
 36 files changed, 7268 insertions(+), 5 deletions(-)
 create mode 100644 research-admin/src/main/java/com/research/web/controller/client/session/SessionController.java
 create mode 100644 research-system/src/main/java/com/research/system/domain/dto/SessionDto.java
 create mode 100644 research-system/src/main/java/com/research/system/domain/po/ChatContactList.java
 create mode 100644 research-system/src/main/java/com/research/system/domain/po/ChatContactListExample.java
 create mode 100644 research-system/src/main/java/com/research/system/domain/po/ChatMessageReadStatus.java
 create mode 100644 research-system/src/main/java/com/research/system/domain/po/ChatMessageReadStatusExample.java
 create mode 100644 research-system/src/main/java/com/research/system/domain/po/ChatSessionMembers.java
 create mode 100644 research-system/src/main/java/com/research/system/domain/po/ChatSessionMembersExample.java
 create mode 100644 research-system/src/main/java/com/research/system/domain/po/ChatSessionMessages.java
 create mode 100644 research-system/src/main/java/com/research/system/domain/po/ChatSessionMessagesExample.java
 create mode 100644 research-system/src/main/java/com/research/system/domain/po/ChatSessions.java
 create mode 100644 research-system/src/main/java/com/research/system/domain/po/ChatSessionsExample.java
 create mode 100644 research-system/src/main/java/com/research/system/domain/vo/SessionVo.java
 create mode 100644 research-system/src/main/java/com/research/system/persist/dao/SessionDao.java
 create mode 100644 research-system/src/main/java/com/research/system/persist/mapper/ChatContactListMapper.java
 create mode 100644 research-system/src/main/java/com/research/system/persist/mapper/ChatMessageReadStatusMapper.java
 create mode 100644 research-system/src/main/java/com/research/system/persist/mapper/ChatSessionMembersMapper.java
 create mode 100644 research-system/src/main/java/com/research/system/persist/mapper/ChatSessionMessagesMapper.java
 create mode 100644 research-system/src/main/java/com/research/system/persist/mapper/ChatSessionsMapper.java
 create mode 100644 research-system/src/main/java/com/research/system/service/SessionService.java
 create mode 100644 research-system/src/main/java/com/research/system/service/impl/SessionServiceImpl.java
 create mode 100644 research-system/src/main/resources/mapper/dao/SessionDao.xml
 create mode 100644 research-system/src/main/resources/mapper/system/ChatContactListMapper.xml
 create mode 100644 research-system/src/main/resources/mapper/system/ChatMessageReadStatusMapper.xml
 create mode 100644 research-system/src/main/resources/mapper/system/ChatSessionMembersMapper.xml
 create mode 100644 research-system/src/main/resources/mapper/system/ChatSessionMessagesMapper.xml
 create mode 100644 research-system/src/main/resources/mapper/system/ChatSessionsMapper.xml

diff --git a/pom.xml b/pom.xml
index 208f604b..552c3631 100644
--- a/pom.xml
+++ b/pom.xml
@@ -241,6 +241,19 @@
                 <artifactId>mybatis-plus-boot-starter</artifactId>
                 <version>3.4.0</version>
             </dependency>
+<!--            <dependency>-->
+<!--                <groupId>org.springframework.boot</groupId>-->
+<!--                <artifactId>spring-boot-starter-websocket</artifactId>-->
+<!--            </dependency>-->
+<!--            <dependency>-->
+<!--                <groupId>org.springframework.boot</groupId>-->
+<!--                <artifactId>spring-boot-starter-web</artifactId>-->
+<!--            </dependency>-->
+<!--            <dependency>-->
+<!--                <groupId>com.alibaba.fastjson2</groupId>-->
+<!--                <artifactId>fastjson2</artifactId>-->
+<!--                <version>2.0.50</version>-->
+<!--            </dependency>-->
 
         </dependencies>
     </dependencyManagement>
diff --git a/research-admin/src/main/java/com/research/web/controller/client/session/SessionController.java b/research-admin/src/main/java/com/research/web/controller/client/session/SessionController.java
new file mode 100644
index 00000000..d82b4e88
--- /dev/null
+++ b/research-admin/src/main/java/com/research/web/controller/client/session/SessionController.java
@@ -0,0 +1,77 @@
+package com.research.web.controller.client.session;
+
+import com.github.pagehelper.PageHelper;
+import com.github.pagehelper.PageInfo;
+import com.research.common.core.domain.BaseDto;
+import com.research.common.core.domain.JsonResponse;
+import com.research.system.domain.dto.SessionDto;
+import com.research.system.domain.vo.SessionVo;
+import com.research.system.service.SessionService;
+import io.swagger.annotations.Api;
+import io.swagger.annotations.ApiOperation;
+import io.swagger.annotations.ApiParam;
+import liquibase.pro.packaged.J;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.validation.annotation.Validated;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+import org.springframework.web.bind.annotation.RestController;
+
+import javax.annotation.Resource;
+import java.util.List;
+
+/**
+ * @Author zzc
+ * @Package com.research.web.controller.client.session
+ * @Date 2025/11/24 14:39
+ * @description:
+ */
+@RestController
+@RequestMapping("/session")
+@Api(tags = "消息相关")
+@Slf4j
+public class SessionController {
+
+    @Resource
+    private SessionService sessionService;
+
+    @ApiOperation(value = "查询通讯录")
+    @RequestMapping(value = "/queryTxl", method = RequestMethod.POST, produces = {"application/json;charset=UTF-8"})
+    public JsonResponse<PageInfo<SessionVo.TxlResult>> queryTxl(@ApiParam @Validated @RequestBody BaseDto<SessionDto.Query> dto) {
+        if (dto.getPageNum() > 0) {
+            PageHelper.startPage(dto.getPageNum(), dto.getPageSize());
+        }
+        return JsonResponse.ok(new PageInfo<>(sessionService.queryTxl(dto.getParam())));
+    }
+
+    @ApiOperation(value = "根据会话ID查询聊天记录")
+    @RequestMapping(value = "/queryLog", method = RequestMethod.POST, produces = {"application/json;charset=UTF-8"})
+    public JsonResponse<SessionVo.MessageLogResult> queryLog(@ApiParam @Validated @RequestBody BaseDto<SessionDto.SessionId> dto) {
+        return JsonResponse.ok(sessionService.queryLog(dto));
+    }
+
+    @ApiOperation(value = "发送消息")
+    @RequestMapping(value = "/send", method = RequestMethod.POST, produces = {"application/json;charset=UTF-8"})
+    public JsonResponse<Integer> send(@ApiParam @Validated @RequestBody SessionDto.SendMessage dto) {
+        return JsonResponse.ok(sessionService.send(dto));
+    }
+
+    @ApiOperation(value = "添加会话")
+    @RequestMapping(value = "/addSession", method = RequestMethod.POST, produces = {"application/json;charset=UTF-8"})
+    public JsonResponse<Long> addSession(@ApiParam @Validated @RequestBody SessionDto.CreateSession dto) {
+        return JsonResponse.ok(sessionService.addSession(dto));
+    }
+
+    @ApiOperation(value = "删除会话")
+    @RequestMapping(value = "/delSession", method = RequestMethod.POST, produces = {"application/json;charset=UTF-8"})
+    public JsonResponse<Integer> delSession(@ApiParam @Validated @RequestBody SessionDto.Delete dto) {
+        return JsonResponse.ok(sessionService.delSession(dto));
+    }
+
+    @ApiOperation(value = "删除聊天记录")
+    @RequestMapping(value = "/delLog", method = RequestMethod.POST, produces = {"application/json;charset=UTF-8"})
+    public JsonResponse<Integer> delLog(@ApiParam @Validated @RequestBody SessionDto.Delete dto) {
+        return JsonResponse.ok(sessionService.delLog(dto));
+    }
+}
diff --git a/research-generator/src/main/resources/mbg.xml b/research-generator/src/main/resources/mbg.xml
index 3ed65a94..45e048a4 100644
--- a/research-generator/src/main/resources/mbg.xml
+++ b/research-generator/src/main/resources/mbg.xml
@@ -84,11 +84,17 @@
 <!--        <table tableName="shs_res_device" domainObjectName="ShsResDevice" enableDeleteByExample="false"/>-->
 <!--        <table tableName="res_research_integrity_template" domainObjectName="ResResearchIntegrityTemplate" enableDeleteByExample="false"/>-->
 <!--        <table tableName="res_research_integrity" domainObjectName="ResResearchIntegrity" enableDeleteByExample="false"/>-->
-        <table tableName="task_list" domainObjectName="TaskList" enableDeleteByExample="false"/>
+<!--        <table tableName="task_list" domainObjectName="TaskList" enableDeleteByExample="false"/>-->
 <!--        <table tableName="task_executor" domainObjectName="TaskExecutor" enableDeleteByExample="false"/>-->
-        <table tableName="task_deliverable" domainObjectName="TaskDeliverable" enableDeleteByExample="false"/>
+<!--        <table tableName="task_deliverable" domainObjectName="TaskDeliverable" enableDeleteByExample="false"/>-->
 <!--        <table tableName="shs_syff_info" domainObjectName="ShsSyffInfo" enableDeleteByExample="false"/>-->
 <!--        <table tableName="pro_progress" domainObjectName="ProProgress" enableDeleteByExample="false"/>-->
+        <table tableName="chat_contact_list" domainObjectName="ChatContactList" enableDeleteByExample="false"/>
+        <table tableName="chat_message_read_status" domainObjectName="ChatMessageReadStatus" enableDeleteByExample="false"/>
+        <table tableName="chat_session_members" domainObjectName="ChatSessionMembers" enableDeleteByExample="false"/>
+        <table tableName="chat_session_messages" domainObjectName="ChatSessionMessages" enableDeleteByExample="false"/>
+        <table tableName="chat_sessions" domainObjectName="ChatSessions" enableDeleteByExample="false"/>
+
         <!-- 有些表的字段需要指定java类型
          <table schema="" tableName="">
             <columnOverride column="" javaType="" />
diff --git a/research-system/src/main/java/com/research/system/domain/dto/GroupDto.java b/research-system/src/main/java/com/research/system/domain/dto/GroupDto.java
index 603d7279..e6ef1fa2 100644
--- a/research-system/src/main/java/com/research/system/domain/dto/GroupDto.java
+++ b/research-system/src/main/java/com/research/system/domain/dto/GroupDto.java
@@ -130,7 +130,7 @@ public class GroupDto {
 
         @JsonFormat(pattern = "yyyy-MM-dd")
         @ApiModelProperty("入学时间")
-        private Date enrollTime;
+        private Date enrollmentTime;
         @JsonFormat(pattern = "yyyy-MM-dd")
         @ApiModelProperty("毕业时间")
         private Date graduationTime;
diff --git a/research-system/src/main/java/com/research/system/domain/dto/ResResearchIntegrityDto.java b/research-system/src/main/java/com/research/system/domain/dto/ResResearchIntegrityDto.java
index 6aa53aec..7f4b951e 100644
--- a/research-system/src/main/java/com/research/system/domain/dto/ResResearchIntegrityDto.java
+++ b/research-system/src/main/java/com/research/system/domain/dto/ResResearchIntegrityDto.java
@@ -41,6 +41,7 @@ public class ResResearchIntegrityDto {
         private String signTime;
 
         private String tplDownloadUrl;
+        private String remark;
     }
 
     @Data
diff --git a/research-system/src/main/java/com/research/system/domain/dto/SessionDto.java b/research-system/src/main/java/com/research/system/domain/dto/SessionDto.java
new file mode 100644
index 00000000..77399348
--- /dev/null
+++ b/research-system/src/main/java/com/research/system/domain/dto/SessionDto.java
@@ -0,0 +1,66 @@
+package com.research.system.domain.dto;
+
+import com.research.common.utils.SecurityUtils;
+import io.swagger.annotations.ApiModelProperty;
+import lombok.Data;
+
+import javax.validation.constraints.NotNull;
+import java.util.List;
+
+/**
+ * @Author zzc
+ * @Package com.research.system.domain.dto
+ * @Date 2025/11/23 17:06
+ * @description:
+ */
+public class SessionDto {
+
+    @Data
+    public static class Query{
+        @ApiModelProperty("昵称")
+        private String nickname;
+        private Long userId = SecurityUtils.getUserId();
+    }
+
+    @Data
+    public static class SessionId{
+        @NotNull(message = "会话id不能为空")
+        @ApiModelProperty("会话id")
+        private Long sessionId;
+    }
+
+    @Data
+    public static class SendMessage{
+        @ApiModelProperty("会话id")
+        private Long sessionId;
+        @ApiModelProperty("内容")
+        private String content;
+        @ApiModelProperty("消息内容类型 0文本 1文件 2图片 10X成果（论文专利等） 20X共享（仪器、参考文献、试验方法等")
+        private Byte contentType;
+//        @ApiModelProperty("消息文本内容  类型为文件/图片时是url地址 ，为成果/任务时为业务ID  ，存储时编码  最长500个中文字符")
+//        private Long recipient;
+        @ApiModelProperty("引用的消息ID")
+        private Long referencedMessageId;
+        @ApiModelProperty("被@的用户ID 多个用逗号隔开  不用编码")
+        private String mentionedUsers;
+    }
+
+    @Data
+    public static class CreateSession{
+        @ApiModelProperty("会话id")
+        private Long sessionId;
+        @ApiModelProperty("会话名称")
+        private String sessionName;
+        @ApiModelProperty("会话类型 0普通会话 1群组会话")
+        private Byte type;
+        @ApiModelProperty("会话成员")
+        private List<Long> memberList;
+    }
+
+    @Data
+    public static class Delete{
+        @ApiModelProperty("会话id")
+        private List<Long> idList;
+    }
+
+}
diff --git a/research-system/src/main/java/com/research/system/domain/po/ChatContactList.java b/research-system/src/main/java/com/research/system/domain/po/ChatContactList.java
new file mode 100644
index 00000000..30742b14
--- /dev/null
+++ b/research-system/src/main/java/com/research/system/domain/po/ChatContactList.java
@@ -0,0 +1,116 @@
+package com.research.system.domain.po;
+
+import java.io.Serializable;
+
+public class ChatContactList implements Serializable {
+    private Long userId;
+
+    private String userName;
+
+    private String nickName;
+
+    private String avatar;
+
+    private String phonenumber;
+
+    private String sex;
+
+    private String status;
+
+    private Long orgId;
+
+    private String orgName;
+
+    private static final long serialVersionUID = 1L;
+
+    public Long getUserId() {
+        return userId;
+    }
+
+    public void setUserId(Long userId) {
+        this.userId = userId;
+    }
+
+    public String getUserName() {
+        return userName;
+    }
+
+    public void setUserName(String userName) {
+        this.userName = userName == null ? null : userName.trim();
+    }
+
+    public String getNickName() {
+        return nickName;
+    }
+
+    public void setNickName(String nickName) {
+        this.nickName = nickName == null ? null : nickName.trim();
+    }
+
+    public String getAvatar() {
+        return avatar;
+    }
+
+    public void setAvatar(String avatar) {
+        this.avatar = avatar == null ? null : avatar.trim();
+    }
+
+    public String getPhonenumber() {
+        return phonenumber;
+    }
+
+    public void setPhonenumber(String phonenumber) {
+        this.phonenumber = phonenumber == null ? null : phonenumber.trim();
+    }
+
+    public String getSex() {
+        return sex;
+    }
+
+    public void setSex(String sex) {
+        this.sex = sex == null ? null : sex.trim();
+    }
+
+    public String getStatus() {
+        return status;
+    }
+
+    public void setStatus(String status) {
+        this.status = status == null ? null : status.trim();
+    }
+
+    public Long getOrgId() {
+        return orgId;
+    }
+
+    public void setOrgId(Long orgId) {
+        this.orgId = orgId;
+    }
+
+    public String getOrgName() {
+        return orgName;
+    }
+
+    public void setOrgName(String orgName) {
+        this.orgName = orgName == null ? null : orgName.trim();
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append(getClass().getSimpleName());
+        sb.append(" [");
+        sb.append("Hash = ").append(hashCode());
+        sb.append(", userId=").append(userId);
+        sb.append(", userName=").append(userName);
+        sb.append(", nickName=").append(nickName);
+        sb.append(", avatar=").append(avatar);
+        sb.append(", phonenumber=").append(phonenumber);
+        sb.append(", sex=").append(sex);
+        sb.append(", status=").append(status);
+        sb.append(", orgId=").append(orgId);
+        sb.append(", orgName=").append(orgName);
+        sb.append("]");
+        return sb.toString();
+    }
+}
\ No newline at end of file
diff --git a/research-system/src/main/java/com/research/system/domain/po/ChatContactListExample.java b/research-system/src/main/java/com/research/system/domain/po/ChatContactListExample.java
new file mode 100644
index 00000000..edad2e0a
--- /dev/null
+++ b/research-system/src/main/java/com/research/system/domain/po/ChatContactListExample.java
@@ -0,0 +1,810 @@
+package com.research.system.domain.po;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class ChatContactListExample {
+    protected String orderByClause;
+
+    protected boolean distinct;
+
+    protected List<Criteria> oredCriteria;
+
+    public ChatContactListExample() {
+        oredCriteria = new ArrayList<Criteria>();
+    }
+
+    public void setOrderByClause(String orderByClause) {
+        this.orderByClause = orderByClause;
+    }
+
+    public String getOrderByClause() {
+        return orderByClause;
+    }
+
+    public void setDistinct(boolean distinct) {
+        this.distinct = distinct;
+    }
+
+    public boolean isDistinct() {
+        return distinct;
+    }
+
+    public List<Criteria> getOredCriteria() {
+        return oredCriteria;
+    }
+
+    public void or(Criteria criteria) {
+        oredCriteria.add(criteria);
+    }
+
+    public Criteria or() {
+        Criteria criteria = createCriteriaInternal();
+        oredCriteria.add(criteria);
+        return criteria;
+    }
+
+    public Criteria createCriteria() {
+        Criteria criteria = createCriteriaInternal();
+        if (oredCriteria.size() == 0) {
+            oredCriteria.add(criteria);
+        }
+        return criteria;
+    }
+
+    protected Criteria createCriteriaInternal() {
+        Criteria criteria = new Criteria();
+        return criteria;
+    }
+
+    public void clear() {
+        oredCriteria.clear();
+        orderByClause = null;
+        distinct = false;
+    }
+
+    protected abstract static class GeneratedCriteria {
+        protected List<Criterion> criteria;
+
+        protected GeneratedCriteria() {
+            super();
+            criteria = new ArrayList<Criterion>();
+        }
+
+        public boolean isValid() {
+            return criteria.size() > 0;
+        }
+
+        public List<Criterion> getAllCriteria() {
+            return criteria;
+        }
+
+        public List<Criterion> getCriteria() {
+            return criteria;
+        }
+
+        protected void addCriterion(String condition) {
+            if (condition == null) {
+                throw new RuntimeException("Value for condition cannot be null");
+            }
+            criteria.add(new Criterion(condition));
+        }
+
+        protected void addCriterion(String condition, Object value, String property) {
+            if (value == null) {
+                throw new RuntimeException("Value for " + property + " cannot be null");
+            }
+            criteria.add(new Criterion(condition, value));
+        }
+
+        protected void addCriterion(String condition, Object value1, Object value2, String property) {
+            if (value1 == null || value2 == null) {
+                throw new RuntimeException("Between values for " + property + " cannot be null");
+            }
+            criteria.add(new Criterion(condition, value1, value2));
+        }
+
+        public Criteria andUserIdIsNull() {
+            addCriterion("user_id is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andUserIdIsNotNull() {
+            addCriterion("user_id is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andUserIdEqualTo(Long value) {
+            addCriterion("user_id =", value, "userId");
+            return (Criteria) this;
+        }
+
+        public Criteria andUserIdNotEqualTo(Long value) {
+            addCriterion("user_id <>", value, "userId");
+            return (Criteria) this;
+        }
+
+        public Criteria andUserIdGreaterThan(Long value) {
+            addCriterion("user_id >", value, "userId");
+            return (Criteria) this;
+        }
+
+        public Criteria andUserIdGreaterThanOrEqualTo(Long value) {
+            addCriterion("user_id >=", value, "userId");
+            return (Criteria) this;
+        }
+
+        public Criteria andUserIdLessThan(Long value) {
+            addCriterion("user_id <", value, "userId");
+            return (Criteria) this;
+        }
+
+        public Criteria andUserIdLessThanOrEqualTo(Long value) {
+            addCriterion("user_id <=", value, "userId");
+            return (Criteria) this;
+        }
+
+        public Criteria andUserIdIn(List<Long> values) {
+            addCriterion("user_id in", values, "userId");
+            return (Criteria) this;
+        }
+
+        public Criteria andUserIdNotIn(List<Long> values) {
+            addCriterion("user_id not in", values, "userId");
+            return (Criteria) this;
+        }
+
+        public Criteria andUserIdBetween(Long value1, Long value2) {
+            addCriterion("user_id between", value1, value2, "userId");
+            return (Criteria) this;
+        }
+
+        public Criteria andUserIdNotBetween(Long value1, Long value2) {
+            addCriterion("user_id not between", value1, value2, "userId");
+            return (Criteria) this;
+        }
+
+        public Criteria andUserNameIsNull() {
+            addCriterion("user_name is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andUserNameIsNotNull() {
+            addCriterion("user_name is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andUserNameEqualTo(String value) {
+            addCriterion("user_name =", value, "userName");
+            return (Criteria) this;
+        }
+
+        public Criteria andUserNameNotEqualTo(String value) {
+            addCriterion("user_name <>", value, "userName");
+            return (Criteria) this;
+        }
+
+        public Criteria andUserNameGreaterThan(String value) {
+            addCriterion("user_name >", value, "userName");
+            return (Criteria) this;
+        }
+
+        public Criteria andUserNameGreaterThanOrEqualTo(String value) {
+            addCriterion("user_name >=", value, "userName");
+            return (Criteria) this;
+        }
+
+        public Criteria andUserNameLessThan(String value) {
+            addCriterion("user_name <", value, "userName");
+            return (Criteria) this;
+        }
+
+        public Criteria andUserNameLessThanOrEqualTo(String value) {
+            addCriterion("user_name <=", value, "userName");
+            return (Criteria) this;
+        }
+
+        public Criteria andUserNameLike(String value) {
+            addCriterion("user_name like", value, "userName");
+            return (Criteria) this;
+        }
+
+        public Criteria andUserNameNotLike(String value) {
+            addCriterion("user_name not like", value, "userName");
+            return (Criteria) this;
+        }
+
+        public Criteria andUserNameIn(List<String> values) {
+            addCriterion("user_name in", values, "userName");
+            return (Criteria) this;
+        }
+
+        public Criteria andUserNameNotIn(List<String> values) {
+            addCriterion("user_name not in", values, "userName");
+            return (Criteria) this;
+        }
+
+        public Criteria andUserNameBetween(String value1, String value2) {
+            addCriterion("user_name between", value1, value2, "userName");
+            return (Criteria) this;
+        }
+
+        public Criteria andUserNameNotBetween(String value1, String value2) {
+            addCriterion("user_name not between", value1, value2, "userName");
+            return (Criteria) this;
+        }
+
+        public Criteria andNickNameIsNull() {
+            addCriterion("nick_name is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andNickNameIsNotNull() {
+            addCriterion("nick_name is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andNickNameEqualTo(String value) {
+            addCriterion("nick_name =", value, "nickName");
+            return (Criteria) this;
+        }
+
+        public Criteria andNickNameNotEqualTo(String value) {
+            addCriterion("nick_name <>", value, "nickName");
+            return (Criteria) this;
+        }
+
+        public Criteria andNickNameGreaterThan(String value) {
+            addCriterion("nick_name >", value, "nickName");
+            return (Criteria) this;
+        }
+
+        public Criteria andNickNameGreaterThanOrEqualTo(String value) {
+            addCriterion("nick_name >=", value, "nickName");
+            return (Criteria) this;
+        }
+
+        public Criteria andNickNameLessThan(String value) {
+            addCriterion("nick_name <", value, "nickName");
+            return (Criteria) this;
+        }
+
+        public Criteria andNickNameLessThanOrEqualTo(String value) {
+            addCriterion("nick_name <=", value, "nickName");
+            return (Criteria) this;
+        }
+
+        public Criteria andNickNameLike(String value) {
+            addCriterion("nick_name like", value, "nickName");
+            return (Criteria) this;
+        }
+
+        public Criteria andNickNameNotLike(String value) {
+            addCriterion("nick_name not like", value, "nickName");
+            return (Criteria) this;
+        }
+
+        public Criteria andNickNameIn(List<String> values) {
+            addCriterion("nick_name in", values, "nickName");
+            return (Criteria) this;
+        }
+
+        public Criteria andNickNameNotIn(List<String> values) {
+            addCriterion("nick_name not in", values, "nickName");
+            return (Criteria) this;
+        }
+
+        public Criteria andNickNameBetween(String value1, String value2) {
+            addCriterion("nick_name between", value1, value2, "nickName");
+            return (Criteria) this;
+        }
+
+        public Criteria andNickNameNotBetween(String value1, String value2) {
+            addCriterion("nick_name not between", value1, value2, "nickName");
+            return (Criteria) this;
+        }
+
+        public Criteria andAvatarIsNull() {
+            addCriterion("avatar is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andAvatarIsNotNull() {
+            addCriterion("avatar is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andAvatarEqualTo(String value) {
+            addCriterion("avatar =", value, "avatar");
+            return (Criteria) this;
+        }
+
+        public Criteria andAvatarNotEqualTo(String value) {
+            addCriterion("avatar <>", value, "avatar");
+            return (Criteria) this;
+        }
+
+        public Criteria andAvatarGreaterThan(String value) {
+            addCriterion("avatar >", value, "avatar");
+            return (Criteria) this;
+        }
+
+        public Criteria andAvatarGreaterThanOrEqualTo(String value) {
+            addCriterion("avatar >=", value, "avatar");
+            return (Criteria) this;
+        }
+
+        public Criteria andAvatarLessThan(String value) {
+            addCriterion("avatar <", value, "avatar");
+            return (Criteria) this;
+        }
+
+        public Criteria andAvatarLessThanOrEqualTo(String value) {
+            addCriterion("avatar <=", value, "avatar");
+            return (Criteria) this;
+        }
+
+        public Criteria andAvatarLike(String value) {
+            addCriterion("avatar like", value, "avatar");
+            return (Criteria) this;
+        }
+
+        public Criteria andAvatarNotLike(String value) {
+            addCriterion("avatar not like", value, "avatar");
+            return (Criteria) this;
+        }
+
+        public Criteria andAvatarIn(List<String> values) {
+            addCriterion("avatar in", values, "avatar");
+            return (Criteria) this;
+        }
+
+        public Criteria andAvatarNotIn(List<String> values) {
+            addCriterion("avatar not in", values, "avatar");
+            return (Criteria) this;
+        }
+
+        public Criteria andAvatarBetween(String value1, String value2) {
+            addCriterion("avatar between", value1, value2, "avatar");
+            return (Criteria) this;
+        }
+
+        public Criteria andAvatarNotBetween(String value1, String value2) {
+            addCriterion("avatar not between", value1, value2, "avatar");
+            return (Criteria) this;
+        }
+
+        public Criteria andPhonenumberIsNull() {
+            addCriterion("phonenumber is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andPhonenumberIsNotNull() {
+            addCriterion("phonenumber is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andPhonenumberEqualTo(String value) {
+            addCriterion("phonenumber =", value, "phonenumber");
+            return (Criteria) this;
+        }
+
+        public Criteria andPhonenumberNotEqualTo(String value) {
+            addCriterion("phonenumber <>", value, "phonenumber");
+            return (Criteria) this;
+        }
+
+        public Criteria andPhonenumberGreaterThan(String value) {
+            addCriterion("phonenumber >", value, "phonenumber");
+            return (Criteria) this;
+        }
+
+        public Criteria andPhonenumberGreaterThanOrEqualTo(String value) {
+            addCriterion("phonenumber >=", value, "phonenumber");
+            return (Criteria) this;
+        }
+
+        public Criteria andPhonenumberLessThan(String value) {
+            addCriterion("phonenumber <", value, "phonenumber");
+            return (Criteria) this;
+        }
+
+        public Criteria andPhonenumberLessThanOrEqualTo(String value) {
+            addCriterion("phonenumber <=", value, "phonenumber");
+            return (Criteria) this;
+        }
+
+        public Criteria andPhonenumberLike(String value) {
+            addCriterion("phonenumber like", value, "phonenumber");
+            return (Criteria) this;
+        }
+
+        public Criteria andPhonenumberNotLike(String value) {
+            addCriterion("phonenumber not like", value, "phonenumber");
+            return (Criteria) this;
+        }
+
+        public Criteria andPhonenumberIn(List<String> values) {
+            addCriterion("phonenumber in", values, "phonenumber");
+            return (Criteria) this;
+        }
+
+        public Criteria andPhonenumberNotIn(List<String> values) {
+            addCriterion("phonenumber not in", values, "phonenumber");
+            return (Criteria) this;
+        }
+
+        public Criteria andPhonenumberBetween(String value1, String value2) {
+            addCriterion("phonenumber between", value1, value2, "phonenumber");
+            return (Criteria) this;
+        }
+
+        public Criteria andPhonenumberNotBetween(String value1, String value2) {
+            addCriterion("phonenumber not between", value1, value2, "phonenumber");
+            return (Criteria) this;
+        }
+
+        public Criteria andSexIsNull() {
+            addCriterion("sex is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andSexIsNotNull() {
+            addCriterion("sex is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andSexEqualTo(String value) {
+            addCriterion("sex =", value, "sex");
+            return (Criteria) this;
+        }
+
+        public Criteria andSexNotEqualTo(String value) {
+            addCriterion("sex <>", value, "sex");
+            return (Criteria) this;
+        }
+
+        public Criteria andSexGreaterThan(String value) {
+            addCriterion("sex >", value, "sex");
+            return (Criteria) this;
+        }
+
+        public Criteria andSexGreaterThanOrEqualTo(String value) {
+            addCriterion("sex >=", value, "sex");
+            return (Criteria) this;
+        }
+
+        public Criteria andSexLessThan(String value) {
+            addCriterion("sex <", value, "sex");
+            return (Criteria) this;
+        }
+
+        public Criteria andSexLessThanOrEqualTo(String value) {
+            addCriterion("sex <=", value, "sex");
+            return (Criteria) this;
+        }
+
+        public Criteria andSexLike(String value) {
+            addCriterion("sex like", value, "sex");
+            return (Criteria) this;
+        }
+
+        public Criteria andSexNotLike(String value) {
+            addCriterion("sex not like", value, "sex");
+            return (Criteria) this;
+        }
+
+        public Criteria andSexIn(List<String> values) {
+            addCriterion("sex in", values, "sex");
+            return (Criteria) this;
+        }
+
+        public Criteria andSexNotIn(List<String> values) {
+            addCriterion("sex not in", values, "sex");
+            return (Criteria) this;
+        }
+
+        public Criteria andSexBetween(String value1, String value2) {
+            addCriterion("sex between", value1, value2, "sex");
+            return (Criteria) this;
+        }
+
+        public Criteria andSexNotBetween(String value1, String value2) {
+            addCriterion("sex not between", value1, value2, "sex");
+            return (Criteria) this;
+        }
+
+        public Criteria andStatusIsNull() {
+            addCriterion("status is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andStatusIsNotNull() {
+            addCriterion("status is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andStatusEqualTo(String value) {
+            addCriterion("status =", value, "status");
+            return (Criteria) this;
+        }
+
+        public Criteria andStatusNotEqualTo(String value) {
+            addCriterion("status <>", value, "status");
+            return (Criteria) this;
+        }
+
+        public Criteria andStatusGreaterThan(String value) {
+            addCriterion("status >", value, "status");
+            return (Criteria) this;
+        }
+
+        public Criteria andStatusGreaterThanOrEqualTo(String value) {
+            addCriterion("status >=", value, "status");
+            return (Criteria) this;
+        }
+
+        public Criteria andStatusLessThan(String value) {
+            addCriterion("status <", value, "status");
+            return (Criteria) this;
+        }
+
+        public Criteria andStatusLessThanOrEqualTo(String value) {
+            addCriterion("status <=", value, "status");
+            return (Criteria) this;
+        }
+
+        public Criteria andStatusLike(String value) {
+            addCriterion("status like", value, "status");
+            return (Criteria) this;
+        }
+
+        public Criteria andStatusNotLike(String value) {
+            addCriterion("status not like", value, "status");
+            return (Criteria) this;
+        }
+
+        public Criteria andStatusIn(List<String> values) {
+            addCriterion("status in", values, "status");
+            return (Criteria) this;
+        }
+
+        public Criteria andStatusNotIn(List<String> values) {
+            addCriterion("status not in", values, "status");
+            return (Criteria) this;
+        }
+
+        public Criteria andStatusBetween(String value1, String value2) {
+            addCriterion("status between", value1, value2, "status");
+            return (Criteria) this;
+        }
+
+        public Criteria andStatusNotBetween(String value1, String value2) {
+            addCriterion("status not between", value1, value2, "status");
+            return (Criteria) this;
+        }
+
+        public Criteria andOrgIdIsNull() {
+            addCriterion("org_id is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andOrgIdIsNotNull() {
+            addCriterion("org_id is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andOrgIdEqualTo(Long value) {
+            addCriterion("org_id =", value, "orgId");
+            return (Criteria) this;
+        }
+
+        public Criteria andOrgIdNotEqualTo(Long value) {
+            addCriterion("org_id <>", value, "orgId");
+            return (Criteria) this;
+        }
+
+        public Criteria andOrgIdGreaterThan(Long value) {
+            addCriterion("org_id >", value, "orgId");
+            return (Criteria) this;
+        }
+
+        public Criteria andOrgIdGreaterThanOrEqualTo(Long value) {
+            addCriterion("org_id >=", value, "orgId");
+            return (Criteria) this;
+        }
+
+        public Criteria andOrgIdLessThan(Long value) {
+            addCriterion("org_id <", value, "orgId");
+            return (Criteria) this;
+        }
+
+        public Criteria andOrgIdLessThanOrEqualTo(Long value) {
+            addCriterion("org_id <=", value, "orgId");
+            return (Criteria) this;
+        }
+
+        public Criteria andOrgIdIn(List<Long> values) {
+            addCriterion("org_id in", values, "orgId");
+            return (Criteria) this;
+        }
+
+        public Criteria andOrgIdNotIn(List<Long> values) {
+            addCriterion("org_id not in", values, "orgId");
+            return (Criteria) this;
+        }
+
+        public Criteria andOrgIdBetween(Long value1, Long value2) {
+            addCriterion("org_id between", value1, value2, "orgId");
+            return (Criteria) this;
+        }
+
+        public Criteria andOrgIdNotBetween(Long value1, Long value2) {
+            addCriterion("org_id not between", value1, value2, "orgId");
+            return (Criteria) this;
+        }
+
+        public Criteria andOrgNameIsNull() {
+            addCriterion("org_name is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andOrgNameIsNotNull() {
+            addCriterion("org_name is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andOrgNameEqualTo(String value) {
+            addCriterion("org_name =", value, "orgName");
+            return (Criteria) this;
+        }
+
+        public Criteria andOrgNameNotEqualTo(String value) {
+            addCriterion("org_name <>", value, "orgName");
+            return (Criteria) this;
+        }
+
+        public Criteria andOrgNameGreaterThan(String value) {
+            addCriterion("org_name >", value, "orgName");
+            return (Criteria) this;
+        }
+
+        public Criteria andOrgNameGreaterThanOrEqualTo(String value) {
+            addCriterion("org_name >=", value, "orgName");
+            return (Criteria) this;
+        }
+
+        public Criteria andOrgNameLessThan(String value) {
+            addCriterion("org_name <", value, "orgName");
+            return (Criteria) this;
+        }
+
+        public Criteria andOrgNameLessThanOrEqualTo(String value) {
+            addCriterion("org_name <=", value, "orgName");
+            return (Criteria) this;
+        }
+
+        public Criteria andOrgNameLike(String value) {
+            addCriterion("org_name like", value, "orgName");
+            return (Criteria) this;
+        }
+
+        public Criteria andOrgNameNotLike(String value) {
+            addCriterion("org_name not like", value, "orgName");
+            return (Criteria) this;
+        }
+
+        public Criteria andOrgNameIn(List<String> values) {
+            addCriterion("org_name in", values, "orgName");
+            return (Criteria) this;
+        }
+
+        public Criteria andOrgNameNotIn(List<String> values) {
+            addCriterion("org_name not in", values, "orgName");
+            return (Criteria) this;
+        }
+
+        public Criteria andOrgNameBetween(String value1, String value2) {
+            addCriterion("org_name between", value1, value2, "orgName");
+            return (Criteria) this;
+        }
+
+        public Criteria andOrgNameNotBetween(String value1, String value2) {
+            addCriterion("org_name not between", value1, value2, "orgName");
+            return (Criteria) this;
+        }
+    }
+
+    public static class Criteria extends GeneratedCriteria {
+
+        protected Criteria() {
+            super();
+        }
+    }
+
+    public static class Criterion {
+        private String condition;
+
+        private Object value;
+
+        private Object secondValue;
+
+        private boolean noValue;
+
+        private boolean singleValue;
+
+        private boolean betweenValue;
+
+        private boolean listValue;
+
+        private String typeHandler;
+
+        public String getCondition() {
+            return condition;
+        }
+
+        public Object getValue() {
+            return value;
+        }
+
+        public Object getSecondValue() {
+            return secondValue;
+        }
+
+        public boolean isNoValue() {
+            return noValue;
+        }
+
+        public boolean isSingleValue() {
+            return singleValue;
+        }
+
+        public boolean isBetweenValue() {
+            return betweenValue;
+        }
+
+        public boolean isListValue() {
+            return listValue;
+        }
+
+        public String getTypeHandler() {
+            return typeHandler;
+        }
+
+        protected Criterion(String condition) {
+            super();
+            this.condition = condition;
+            this.typeHandler = null;
+            this.noValue = true;
+        }
+
+        protected Criterion(String condition, Object value, String typeHandler) {
+            super();
+            this.condition = condition;
+            this.value = value;
+            this.typeHandler = typeHandler;
+            if (value instanceof List<?>) {
+                this.listValue = true;
+            } else {
+                this.singleValue = true;
+            }
+        }
+
+        protected Criterion(String condition, Object value) {
+            this(condition, value, null);
+        }
+
+        protected Criterion(String condition, Object value, Object secondValue, String typeHandler) {
+            super();
+            this.condition = condition;
+            this.value = value;
+            this.secondValue = secondValue;
+            this.typeHandler = typeHandler;
+            this.betweenValue = true;
+        }
+
+        protected Criterion(String condition, Object value, Object secondValue) {
+            this(condition, value, secondValue, null);
+        }
+    }
+}
\ No newline at end of file
diff --git a/research-system/src/main/java/com/research/system/domain/po/ChatMessageReadStatus.java b/research-system/src/main/java/com/research/system/domain/po/ChatMessageReadStatus.java
new file mode 100644
index 00000000..5e4a6f11
--- /dev/null
+++ b/research-system/src/main/java/com/research/system/domain/po/ChatMessageReadStatus.java
@@ -0,0 +1,139 @@
+package com.research.system.domain.po;
+
+import java.io.Serializable;
+import java.util.Date;
+
+public class ChatMessageReadStatus implements Serializable {
+    private Long id;
+
+    private Long sessionId;
+
+    private Long sessionMessageId;
+
+    private Long sessionMemberId;
+
+    private Byte readStatus;
+
+    private Byte delStatus;
+
+    private String createBy;
+
+    private Date createTime;
+
+    private String updateBy;
+
+    private Date updateTime;
+
+    private Byte delFlag;
+
+    private static final long serialVersionUID = 1L;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public Long getSessionId() {
+        return sessionId;
+    }
+
+    public void setSessionId(Long sessionId) {
+        this.sessionId = sessionId;
+    }
+
+    public Long getSessionMessageId() {
+        return sessionMessageId;
+    }
+
+    public void setSessionMessageId(Long sessionMessageId) {
+        this.sessionMessageId = sessionMessageId;
+    }
+
+    public Long getSessionMemberId() {
+        return sessionMemberId;
+    }
+
+    public void setSessionMemberId(Long sessionMemberId) {
+        this.sessionMemberId = sessionMemberId;
+    }
+
+    public Byte getReadStatus() {
+        return readStatus;
+    }
+
+    public void setReadStatus(Byte readStatus) {
+        this.readStatus = readStatus;
+    }
+
+    public Byte getDelStatus() {
+        return delStatus;
+    }
+
+    public void setDelStatus(Byte delStatus) {
+        this.delStatus = delStatus;
+    }
+
+    public String getCreateBy() {
+        return createBy;
+    }
+
+    public void setCreateBy(String createBy) {
+        this.createBy = createBy == null ? null : createBy.trim();
+    }
+
+    public Date getCreateTime() {
+        return createTime;
+    }
+
+    public void setCreateTime(Date createTime) {
+        this.createTime = createTime;
+    }
+
+    public String getUpdateBy() {
+        return updateBy;
+    }
+
+    public void setUpdateBy(String updateBy) {
+        this.updateBy = updateBy == null ? null : updateBy.trim();
+    }
+
+    public Date getUpdateTime() {
+        return updateTime;
+    }
+
+    public void setUpdateTime(Date updateTime) {
+        this.updateTime = updateTime;
+    }
+
+    public Byte getDelFlag() {
+        return delFlag;
+    }
+
+    public void setDelFlag(Byte delFlag) {
+        this.delFlag = delFlag;
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append(getClass().getSimpleName());
+        sb.append(" [");
+        sb.append("Hash = ").append(hashCode());
+        sb.append(", id=").append(id);
+        sb.append(", sessionId=").append(sessionId);
+        sb.append(", sessionMessageId=").append(sessionMessageId);
+        sb.append(", sessionMemberId=").append(sessionMemberId);
+        sb.append(", readStatus=").append(readStatus);
+        sb.append(", delStatus=").append(delStatus);
+        sb.append(", createBy=").append(createBy);
+        sb.append(", createTime=").append(createTime);
+        sb.append(", updateBy=").append(updateBy);
+        sb.append(", updateTime=").append(updateTime);
+        sb.append(", delFlag=").append(delFlag);
+        sb.append("]");
+        return sb.toString();
+    }
+}
\ No newline at end of file
diff --git a/research-system/src/main/java/com/research/system/domain/po/ChatMessageReadStatusExample.java b/research-system/src/main/java/com/research/system/domain/po/ChatMessageReadStatusExample.java
new file mode 100644
index 00000000..2ad01393
--- /dev/null
+++ b/research-system/src/main/java/com/research/system/domain/po/ChatMessageReadStatusExample.java
@@ -0,0 +1,881 @@
+package com.research.system.domain.po;
+
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+
+public class ChatMessageReadStatusExample {
+    protected String orderByClause;
+
+    protected boolean distinct;
+
+    protected List<Criteria> oredCriteria;
+
+    public ChatMessageReadStatusExample() {
+        oredCriteria = new ArrayList<Criteria>();
+    }
+
+    public void setOrderByClause(String orderByClause) {
+        this.orderByClause = orderByClause;
+    }
+
+    public String getOrderByClause() {
+        return orderByClause;
+    }
+
+    public void setDistinct(boolean distinct) {
+        this.distinct = distinct;
+    }
+
+    public boolean isDistinct() {
+        return distinct;
+    }
+
+    public List<Criteria> getOredCriteria() {
+        return oredCriteria;
+    }
+
+    public void or(Criteria criteria) {
+        oredCriteria.add(criteria);
+    }
+
+    public Criteria or() {
+        Criteria criteria = createCriteriaInternal();
+        oredCriteria.add(criteria);
+        return criteria;
+    }
+
+    public Criteria createCriteria() {
+        Criteria criteria = createCriteriaInternal();
+        if (oredCriteria.size() == 0) {
+            oredCriteria.add(criteria);
+        }
+        return criteria;
+    }
+
+    protected Criteria createCriteriaInternal() {
+        Criteria criteria = new Criteria();
+        return criteria;
+    }
+
+    public void clear() {
+        oredCriteria.clear();
+        orderByClause = null;
+        distinct = false;
+    }
+
+    protected abstract static class GeneratedCriteria {
+        protected List<Criterion> criteria;
+
+        protected GeneratedCriteria() {
+            super();
+            criteria = new ArrayList<Criterion>();
+        }
+
+        public boolean isValid() {
+            return criteria.size() > 0;
+        }
+
+        public List<Criterion> getAllCriteria() {
+            return criteria;
+        }
+
+        public List<Criterion> getCriteria() {
+            return criteria;
+        }
+
+        protected void addCriterion(String condition) {
+            if (condition == null) {
+                throw new RuntimeException("Value for condition cannot be null");
+            }
+            criteria.add(new Criterion(condition));
+        }
+
+        protected void addCriterion(String condition, Object value, String property) {
+            if (value == null) {
+                throw new RuntimeException("Value for " + property + " cannot be null");
+            }
+            criteria.add(new Criterion(condition, value));
+        }
+
+        protected void addCriterion(String condition, Object value1, Object value2, String property) {
+            if (value1 == null || value2 == null) {
+                throw new RuntimeException("Between values for " + property + " cannot be null");
+            }
+            criteria.add(new Criterion(condition, value1, value2));
+        }
+
+        public Criteria andIdIsNull() {
+            addCriterion("id is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andIdIsNotNull() {
+            addCriterion("id is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andIdEqualTo(Long value) {
+            addCriterion("id =", value, "id");
+            return (Criteria) this;
+        }
+
+        public Criteria andIdNotEqualTo(Long value) {
+            addCriterion("id <>", value, "id");
+            return (Criteria) this;
+        }
+
+        public Criteria andIdGreaterThan(Long value) {
+            addCriterion("id >", value, "id");
+            return (Criteria) this;
+        }
+
+        public Criteria andIdGreaterThanOrEqualTo(Long value) {
+            addCriterion("id >=", value, "id");
+            return (Criteria) this;
+        }
+
+        public Criteria andIdLessThan(Long value) {
+            addCriterion("id <", value, "id");
+            return (Criteria) this;
+        }
+
+        public Criteria andIdLessThanOrEqualTo(Long value) {
+            addCriterion("id <=", value, "id");
+            return (Criteria) this;
+        }
+
+        public Criteria andIdIn(List<Long> values) {
+            addCriterion("id in", values, "id");
+            return (Criteria) this;
+        }
+
+        public Criteria andIdNotIn(List<Long> values) {
+            addCriterion("id not in", values, "id");
+            return (Criteria) this;
+        }
+
+        public Criteria andIdBetween(Long value1, Long value2) {
+            addCriterion("id between", value1, value2, "id");
+            return (Criteria) this;
+        }
+
+        public Criteria andIdNotBetween(Long value1, Long value2) {
+            addCriterion("id not between", value1, value2, "id");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionIdIsNull() {
+            addCriterion("session_id is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionIdIsNotNull() {
+            addCriterion("session_id is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionIdEqualTo(Long value) {
+            addCriterion("session_id =", value, "sessionId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionIdNotEqualTo(Long value) {
+            addCriterion("session_id <>", value, "sessionId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionIdGreaterThan(Long value) {
+            addCriterion("session_id >", value, "sessionId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionIdGreaterThanOrEqualTo(Long value) {
+            addCriterion("session_id >=", value, "sessionId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionIdLessThan(Long value) {
+            addCriterion("session_id <", value, "sessionId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionIdLessThanOrEqualTo(Long value) {
+            addCriterion("session_id <=", value, "sessionId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionIdIn(List<Long> values) {
+            addCriterion("session_id in", values, "sessionId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionIdNotIn(List<Long> values) {
+            addCriterion("session_id not in", values, "sessionId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionIdBetween(Long value1, Long value2) {
+            addCriterion("session_id between", value1, value2, "sessionId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionIdNotBetween(Long value1, Long value2) {
+            addCriterion("session_id not between", value1, value2, "sessionId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionMessageIdIsNull() {
+            addCriterion("session_message_id is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionMessageIdIsNotNull() {
+            addCriterion("session_message_id is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionMessageIdEqualTo(Long value) {
+            addCriterion("session_message_id =", value, "sessionMessageId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionMessageIdNotEqualTo(Long value) {
+            addCriterion("session_message_id <>", value, "sessionMessageId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionMessageIdGreaterThan(Long value) {
+            addCriterion("session_message_id >", value, "sessionMessageId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionMessageIdGreaterThanOrEqualTo(Long value) {
+            addCriterion("session_message_id >=", value, "sessionMessageId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionMessageIdLessThan(Long value) {
+            addCriterion("session_message_id <", value, "sessionMessageId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionMessageIdLessThanOrEqualTo(Long value) {
+            addCriterion("session_message_id <=", value, "sessionMessageId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionMessageIdIn(List<Long> values) {
+            addCriterion("session_message_id in", values, "sessionMessageId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionMessageIdNotIn(List<Long> values) {
+            addCriterion("session_message_id not in", values, "sessionMessageId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionMessageIdBetween(Long value1, Long value2) {
+            addCriterion("session_message_id between", value1, value2, "sessionMessageId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionMessageIdNotBetween(Long value1, Long value2) {
+            addCriterion("session_message_id not between", value1, value2, "sessionMessageId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionMemberIdIsNull() {
+            addCriterion("session_member_id is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionMemberIdIsNotNull() {
+            addCriterion("session_member_id is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionMemberIdEqualTo(Long value) {
+            addCriterion("session_member_id =", value, "sessionMemberId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionMemberIdNotEqualTo(Long value) {
+            addCriterion("session_member_id <>", value, "sessionMemberId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionMemberIdGreaterThan(Long value) {
+            addCriterion("session_member_id >", value, "sessionMemberId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionMemberIdGreaterThanOrEqualTo(Long value) {
+            addCriterion("session_member_id >=", value, "sessionMemberId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionMemberIdLessThan(Long value) {
+            addCriterion("session_member_id <", value, "sessionMemberId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionMemberIdLessThanOrEqualTo(Long value) {
+            addCriterion("session_member_id <=", value, "sessionMemberId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionMemberIdIn(List<Long> values) {
+            addCriterion("session_member_id in", values, "sessionMemberId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionMemberIdNotIn(List<Long> values) {
+            addCriterion("session_member_id not in", values, "sessionMemberId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionMemberIdBetween(Long value1, Long value2) {
+            addCriterion("session_member_id between", value1, value2, "sessionMemberId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionMemberIdNotBetween(Long value1, Long value2) {
+            addCriterion("session_member_id not between", value1, value2, "sessionMemberId");
+            return (Criteria) this;
+        }
+
+        public Criteria andReadStatusIsNull() {
+            addCriterion("read_status is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andReadStatusIsNotNull() {
+            addCriterion("read_status is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andReadStatusEqualTo(Byte value) {
+            addCriterion("read_status =", value, "readStatus");
+            return (Criteria) this;
+        }
+
+        public Criteria andReadStatusNotEqualTo(Byte value) {
+            addCriterion("read_status <>", value, "readStatus");
+            return (Criteria) this;
+        }
+
+        public Criteria andReadStatusGreaterThan(Byte value) {
+            addCriterion("read_status >", value, "readStatus");
+            return (Criteria) this;
+        }
+
+        public Criteria andReadStatusGreaterThanOrEqualTo(Byte value) {
+            addCriterion("read_status >=", value, "readStatus");
+            return (Criteria) this;
+        }
+
+        public Criteria andReadStatusLessThan(Byte value) {
+            addCriterion("read_status <", value, "readStatus");
+            return (Criteria) this;
+        }
+
+        public Criteria andReadStatusLessThanOrEqualTo(Byte value) {
+            addCriterion("read_status <=", value, "readStatus");
+            return (Criteria) this;
+        }
+
+        public Criteria andReadStatusIn(List<Byte> values) {
+            addCriterion("read_status in", values, "readStatus");
+            return (Criteria) this;
+        }
+
+        public Criteria andReadStatusNotIn(List<Byte> values) {
+            addCriterion("read_status not in", values, "readStatus");
+            return (Criteria) this;
+        }
+
+        public Criteria andReadStatusBetween(Byte value1, Byte value2) {
+            addCriterion("read_status between", value1, value2, "readStatus");
+            return (Criteria) this;
+        }
+
+        public Criteria andReadStatusNotBetween(Byte value1, Byte value2) {
+            addCriterion("read_status not between", value1, value2, "readStatus");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelStatusIsNull() {
+            addCriterion("del_status is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelStatusIsNotNull() {
+            addCriterion("del_status is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelStatusEqualTo(Byte value) {
+            addCriterion("del_status =", value, "delStatus");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelStatusNotEqualTo(Byte value) {
+            addCriterion("del_status <>", value, "delStatus");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelStatusGreaterThan(Byte value) {
+            addCriterion("del_status >", value, "delStatus");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelStatusGreaterThanOrEqualTo(Byte value) {
+            addCriterion("del_status >=", value, "delStatus");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelStatusLessThan(Byte value) {
+            addCriterion("del_status <", value, "delStatus");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelStatusLessThanOrEqualTo(Byte value) {
+            addCriterion("del_status <=", value, "delStatus");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelStatusIn(List<Byte> values) {
+            addCriterion("del_status in", values, "delStatus");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelStatusNotIn(List<Byte> values) {
+            addCriterion("del_status not in", values, "delStatus");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelStatusBetween(Byte value1, Byte value2) {
+            addCriterion("del_status between", value1, value2, "delStatus");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelStatusNotBetween(Byte value1, Byte value2) {
+            addCriterion("del_status not between", value1, value2, "delStatus");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByIsNull() {
+            addCriterion("create_by is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByIsNotNull() {
+            addCriterion("create_by is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByEqualTo(String value) {
+            addCriterion("create_by =", value, "createBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByNotEqualTo(String value) {
+            addCriterion("create_by <>", value, "createBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByGreaterThan(String value) {
+            addCriterion("create_by >", value, "createBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByGreaterThanOrEqualTo(String value) {
+            addCriterion("create_by >=", value, "createBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByLessThan(String value) {
+            addCriterion("create_by <", value, "createBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByLessThanOrEqualTo(String value) {
+            addCriterion("create_by <=", value, "createBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByLike(String value) {
+            addCriterion("create_by like", value, "createBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByNotLike(String value) {
+            addCriterion("create_by not like", value, "createBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByIn(List<String> values) {
+            addCriterion("create_by in", values, "createBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByNotIn(List<String> values) {
+            addCriterion("create_by not in", values, "createBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByBetween(String value1, String value2) {
+            addCriterion("create_by between", value1, value2, "createBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByNotBetween(String value1, String value2) {
+            addCriterion("create_by not between", value1, value2, "createBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateTimeIsNull() {
+            addCriterion("create_time is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateTimeIsNotNull() {
+            addCriterion("create_time is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateTimeEqualTo(Date value) {
+            addCriterion("create_time =", value, "createTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateTimeNotEqualTo(Date value) {
+            addCriterion("create_time <>", value, "createTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateTimeGreaterThan(Date value) {
+            addCriterion("create_time >", value, "createTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateTimeGreaterThanOrEqualTo(Date value) {
+            addCriterion("create_time >=", value, "createTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateTimeLessThan(Date value) {
+            addCriterion("create_time <", value, "createTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateTimeLessThanOrEqualTo(Date value) {
+            addCriterion("create_time <=", value, "createTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateTimeIn(List<Date> values) {
+            addCriterion("create_time in", values, "createTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateTimeNotIn(List<Date> values) {
+            addCriterion("create_time not in", values, "createTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateTimeBetween(Date value1, Date value2) {
+            addCriterion("create_time between", value1, value2, "createTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateTimeNotBetween(Date value1, Date value2) {
+            addCriterion("create_time not between", value1, value2, "createTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByIsNull() {
+            addCriterion("update_by is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByIsNotNull() {
+            addCriterion("update_by is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByEqualTo(String value) {
+            addCriterion("update_by =", value, "updateBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByNotEqualTo(String value) {
+            addCriterion("update_by <>", value, "updateBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByGreaterThan(String value) {
+            addCriterion("update_by >", value, "updateBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByGreaterThanOrEqualTo(String value) {
+            addCriterion("update_by >=", value, "updateBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByLessThan(String value) {
+            addCriterion("update_by <", value, "updateBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByLessThanOrEqualTo(String value) {
+            addCriterion("update_by <=", value, "updateBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByLike(String value) {
+            addCriterion("update_by like", value, "updateBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByNotLike(String value) {
+            addCriterion("update_by not like", value, "updateBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByIn(List<String> values) {
+            addCriterion("update_by in", values, "updateBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByNotIn(List<String> values) {
+            addCriterion("update_by not in", values, "updateBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByBetween(String value1, String value2) {
+            addCriterion("update_by between", value1, value2, "updateBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByNotBetween(String value1, String value2) {
+            addCriterion("update_by not between", value1, value2, "updateBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateTimeIsNull() {
+            addCriterion("update_time is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateTimeIsNotNull() {
+            addCriterion("update_time is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateTimeEqualTo(Date value) {
+            addCriterion("update_time =", value, "updateTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateTimeNotEqualTo(Date value) {
+            addCriterion("update_time <>", value, "updateTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateTimeGreaterThan(Date value) {
+            addCriterion("update_time >", value, "updateTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateTimeGreaterThanOrEqualTo(Date value) {
+            addCriterion("update_time >=", value, "updateTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateTimeLessThan(Date value) {
+            addCriterion("update_time <", value, "updateTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateTimeLessThanOrEqualTo(Date value) {
+            addCriterion("update_time <=", value, "updateTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateTimeIn(List<Date> values) {
+            addCriterion("update_time in", values, "updateTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateTimeNotIn(List<Date> values) {
+            addCriterion("update_time not in", values, "updateTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateTimeBetween(Date value1, Date value2) {
+            addCriterion("update_time between", value1, value2, "updateTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateTimeNotBetween(Date value1, Date value2) {
+            addCriterion("update_time not between", value1, value2, "updateTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelFlagIsNull() {
+            addCriterion("del_flag is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelFlagIsNotNull() {
+            addCriterion("del_flag is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelFlagEqualTo(Byte value) {
+            addCriterion("del_flag =", value, "delFlag");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelFlagNotEqualTo(Byte value) {
+            addCriterion("del_flag <>", value, "delFlag");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelFlagGreaterThan(Byte value) {
+            addCriterion("del_flag >", value, "delFlag");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelFlagGreaterThanOrEqualTo(Byte value) {
+            addCriterion("del_flag >=", value, "delFlag");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelFlagLessThan(Byte value) {
+            addCriterion("del_flag <", value, "delFlag");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelFlagLessThanOrEqualTo(Byte value) {
+            addCriterion("del_flag <=", value, "delFlag");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelFlagIn(List<Byte> values) {
+            addCriterion("del_flag in", values, "delFlag");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelFlagNotIn(List<Byte> values) {
+            addCriterion("del_flag not in", values, "delFlag");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelFlagBetween(Byte value1, Byte value2) {
+            addCriterion("del_flag between", value1, value2, "delFlag");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelFlagNotBetween(Byte value1, Byte value2) {
+            addCriterion("del_flag not between", value1, value2, "delFlag");
+            return (Criteria) this;
+        }
+    }
+
+    public static class Criteria extends GeneratedCriteria {
+
+        protected Criteria() {
+            super();
+        }
+    }
+
+    public static class Criterion {
+        private String condition;
+
+        private Object value;
+
+        private Object secondValue;
+
+        private boolean noValue;
+
+        private boolean singleValue;
+
+        private boolean betweenValue;
+
+        private boolean listValue;
+
+        private String typeHandler;
+
+        public String getCondition() {
+            return condition;
+        }
+
+        public Object getValue() {
+            return value;
+        }
+
+        public Object getSecondValue() {
+            return secondValue;
+        }
+
+        public boolean isNoValue() {
+            return noValue;
+        }
+
+        public boolean isSingleValue() {
+            return singleValue;
+        }
+
+        public boolean isBetweenValue() {
+            return betweenValue;
+        }
+
+        public boolean isListValue() {
+            return listValue;
+        }
+
+        public String getTypeHandler() {
+            return typeHandler;
+        }
+
+        protected Criterion(String condition) {
+            super();
+            this.condition = condition;
+            this.typeHandler = null;
+            this.noValue = true;
+        }
+
+        protected Criterion(String condition, Object value, String typeHandler) {
+            super();
+            this.condition = condition;
+            this.value = value;
+            this.typeHandler = typeHandler;
+            if (value instanceof List<?>) {
+                this.listValue = true;
+            } else {
+                this.singleValue = true;
+            }
+        }
+
+        protected Criterion(String condition, Object value) {
+            this(condition, value, null);
+        }
+
+        protected Criterion(String condition, Object value, Object secondValue, String typeHandler) {
+            super();
+            this.condition = condition;
+            this.value = value;
+            this.secondValue = secondValue;
+            this.typeHandler = typeHandler;
+            this.betweenValue = true;
+        }
+
+        protected Criterion(String condition, Object value, Object secondValue) {
+            this(condition, value, secondValue, null);
+        }
+    }
+}
\ No newline at end of file
diff --git a/research-system/src/main/java/com/research/system/domain/po/ChatSessionMembers.java b/research-system/src/main/java/com/research/system/domain/po/ChatSessionMembers.java
new file mode 100644
index 00000000..6c4282a8
--- /dev/null
+++ b/research-system/src/main/java/com/research/system/domain/po/ChatSessionMembers.java
@@ -0,0 +1,139 @@
+package com.research.system.domain.po;
+
+import java.io.Serializable;
+import java.util.Date;
+
+public class ChatSessionMembers implements Serializable {
+    private Long id;
+
+    private Long sessionId;
+
+    private Long sessionMemberId;
+
+    private Byte isCreator;
+
+    private Byte isAdmin;
+
+    private String sessionAlias;
+
+    private String createBy;
+
+    private Date createTime;
+
+    private String updateBy;
+
+    private Date updateTime;
+
+    private Byte delFlag;
+
+    private static final long serialVersionUID = 1L;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public Long getSessionId() {
+        return sessionId;
+    }
+
+    public void setSessionId(Long sessionId) {
+        this.sessionId = sessionId;
+    }
+
+    public Long getSessionMemberId() {
+        return sessionMemberId;
+    }
+
+    public void setSessionMemberId(Long sessionMemberId) {
+        this.sessionMemberId = sessionMemberId;
+    }
+
+    public Byte getIsCreator() {
+        return isCreator;
+    }
+
+    public void setIsCreator(Byte isCreator) {
+        this.isCreator = isCreator;
+    }
+
+    public Byte getIsAdmin() {
+        return isAdmin;
+    }
+
+    public void setIsAdmin(Byte isAdmin) {
+        this.isAdmin = isAdmin;
+    }
+
+    public String getSessionAlias() {
+        return sessionAlias;
+    }
+
+    public void setSessionAlias(String sessionAlias) {
+        this.sessionAlias = sessionAlias == null ? null : sessionAlias.trim();
+    }
+
+    public String getCreateBy() {
+        return createBy;
+    }
+
+    public void setCreateBy(String createBy) {
+        this.createBy = createBy == null ? null : createBy.trim();
+    }
+
+    public Date getCreateTime() {
+        return createTime;
+    }
+
+    public void setCreateTime(Date createTime) {
+        this.createTime = createTime;
+    }
+
+    public String getUpdateBy() {
+        return updateBy;
+    }
+
+    public void setUpdateBy(String updateBy) {
+        this.updateBy = updateBy == null ? null : updateBy.trim();
+    }
+
+    public Date getUpdateTime() {
+        return updateTime;
+    }
+
+    public void setUpdateTime(Date updateTime) {
+        this.updateTime = updateTime;
+    }
+
+    public Byte getDelFlag() {
+        return delFlag;
+    }
+
+    public void setDelFlag(Byte delFlag) {
+        this.delFlag = delFlag;
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append(getClass().getSimpleName());
+        sb.append(" [");
+        sb.append("Hash = ").append(hashCode());
+        sb.append(", id=").append(id);
+        sb.append(", sessionId=").append(sessionId);
+        sb.append(", sessionMemberId=").append(sessionMemberId);
+        sb.append(", isCreator=").append(isCreator);
+        sb.append(", isAdmin=").append(isAdmin);
+        sb.append(", sessionAlias=").append(sessionAlias);
+        sb.append(", createBy=").append(createBy);
+        sb.append(", createTime=").append(createTime);
+        sb.append(", updateBy=").append(updateBy);
+        sb.append(", updateTime=").append(updateTime);
+        sb.append(", delFlag=").append(delFlag);
+        sb.append("]");
+        return sb.toString();
+    }
+}
\ No newline at end of file
diff --git a/research-system/src/main/java/com/research/system/domain/po/ChatSessionMembersExample.java b/research-system/src/main/java/com/research/system/domain/po/ChatSessionMembersExample.java
new file mode 100644
index 00000000..7ac88243
--- /dev/null
+++ b/research-system/src/main/java/com/research/system/domain/po/ChatSessionMembersExample.java
@@ -0,0 +1,891 @@
+package com.research.system.domain.po;
+
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+
+public class ChatSessionMembersExample {
+    protected String orderByClause;
+
+    protected boolean distinct;
+
+    protected List<Criteria> oredCriteria;
+
+    public ChatSessionMembersExample() {
+        oredCriteria = new ArrayList<Criteria>();
+    }
+
+    public void setOrderByClause(String orderByClause) {
+        this.orderByClause = orderByClause;
+    }
+
+    public String getOrderByClause() {
+        return orderByClause;
+    }
+
+    public void setDistinct(boolean distinct) {
+        this.distinct = distinct;
+    }
+
+    public boolean isDistinct() {
+        return distinct;
+    }
+
+    public List<Criteria> getOredCriteria() {
+        return oredCriteria;
+    }
+
+    public void or(Criteria criteria) {
+        oredCriteria.add(criteria);
+    }
+
+    public Criteria or() {
+        Criteria criteria = createCriteriaInternal();
+        oredCriteria.add(criteria);
+        return criteria;
+    }
+
+    public Criteria createCriteria() {
+        Criteria criteria = createCriteriaInternal();
+        if (oredCriteria.size() == 0) {
+            oredCriteria.add(criteria);
+        }
+        return criteria;
+    }
+
+    protected Criteria createCriteriaInternal() {
+        Criteria criteria = new Criteria();
+        return criteria;
+    }
+
+    public void clear() {
+        oredCriteria.clear();
+        orderByClause = null;
+        distinct = false;
+    }
+
+    protected abstract static class GeneratedCriteria {
+        protected List<Criterion> criteria;
+
+        protected GeneratedCriteria() {
+            super();
+            criteria = new ArrayList<Criterion>();
+        }
+
+        public boolean isValid() {
+            return criteria.size() > 0;
+        }
+
+        public List<Criterion> getAllCriteria() {
+            return criteria;
+        }
+
+        public List<Criterion> getCriteria() {
+            return criteria;
+        }
+
+        protected void addCriterion(String condition) {
+            if (condition == null) {
+                throw new RuntimeException("Value for condition cannot be null");
+            }
+            criteria.add(new Criterion(condition));
+        }
+
+        protected void addCriterion(String condition, Object value, String property) {
+            if (value == null) {
+                throw new RuntimeException("Value for " + property + " cannot be null");
+            }
+            criteria.add(new Criterion(condition, value));
+        }
+
+        protected void addCriterion(String condition, Object value1, Object value2, String property) {
+            if (value1 == null || value2 == null) {
+                throw new RuntimeException("Between values for " + property + " cannot be null");
+            }
+            criteria.add(new Criterion(condition, value1, value2));
+        }
+
+        public Criteria andIdIsNull() {
+            addCriterion("id is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andIdIsNotNull() {
+            addCriterion("id is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andIdEqualTo(Long value) {
+            addCriterion("id =", value, "id");
+            return (Criteria) this;
+        }
+
+        public Criteria andIdNotEqualTo(Long value) {
+            addCriterion("id <>", value, "id");
+            return (Criteria) this;
+        }
+
+        public Criteria andIdGreaterThan(Long value) {
+            addCriterion("id >", value, "id");
+            return (Criteria) this;
+        }
+
+        public Criteria andIdGreaterThanOrEqualTo(Long value) {
+            addCriterion("id >=", value, "id");
+            return (Criteria) this;
+        }
+
+        public Criteria andIdLessThan(Long value) {
+            addCriterion("id <", value, "id");
+            return (Criteria) this;
+        }
+
+        public Criteria andIdLessThanOrEqualTo(Long value) {
+            addCriterion("id <=", value, "id");
+            return (Criteria) this;
+        }
+
+        public Criteria andIdIn(List<Long> values) {
+            addCriterion("id in", values, "id");
+            return (Criteria) this;
+        }
+
+        public Criteria andIdNotIn(List<Long> values) {
+            addCriterion("id not in", values, "id");
+            return (Criteria) this;
+        }
+
+        public Criteria andIdBetween(Long value1, Long value2) {
+            addCriterion("id between", value1, value2, "id");
+            return (Criteria) this;
+        }
+
+        public Criteria andIdNotBetween(Long value1, Long value2) {
+            addCriterion("id not between", value1, value2, "id");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionIdIsNull() {
+            addCriterion("session_id is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionIdIsNotNull() {
+            addCriterion("session_id is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionIdEqualTo(Long value) {
+            addCriterion("session_id =", value, "sessionId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionIdNotEqualTo(Long value) {
+            addCriterion("session_id <>", value, "sessionId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionIdGreaterThan(Long value) {
+            addCriterion("session_id >", value, "sessionId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionIdGreaterThanOrEqualTo(Long value) {
+            addCriterion("session_id >=", value, "sessionId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionIdLessThan(Long value) {
+            addCriterion("session_id <", value, "sessionId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionIdLessThanOrEqualTo(Long value) {
+            addCriterion("session_id <=", value, "sessionId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionIdIn(List<Long> values) {
+            addCriterion("session_id in", values, "sessionId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionIdNotIn(List<Long> values) {
+            addCriterion("session_id not in", values, "sessionId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionIdBetween(Long value1, Long value2) {
+            addCriterion("session_id between", value1, value2, "sessionId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionIdNotBetween(Long value1, Long value2) {
+            addCriterion("session_id not between", value1, value2, "sessionId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionMemberIdIsNull() {
+            addCriterion("session_member_id is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionMemberIdIsNotNull() {
+            addCriterion("session_member_id is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionMemberIdEqualTo(Long value) {
+            addCriterion("session_member_id =", value, "sessionMemberId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionMemberIdNotEqualTo(Long value) {
+            addCriterion("session_member_id <>", value, "sessionMemberId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionMemberIdGreaterThan(Long value) {
+            addCriterion("session_member_id >", value, "sessionMemberId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionMemberIdGreaterThanOrEqualTo(Long value) {
+            addCriterion("session_member_id >=", value, "sessionMemberId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionMemberIdLessThan(Long value) {
+            addCriterion("session_member_id <", value, "sessionMemberId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionMemberIdLessThanOrEqualTo(Long value) {
+            addCriterion("session_member_id <=", value, "sessionMemberId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionMemberIdIn(List<Long> values) {
+            addCriterion("session_member_id in", values, "sessionMemberId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionMemberIdNotIn(List<Long> values) {
+            addCriterion("session_member_id not in", values, "sessionMemberId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionMemberIdBetween(Long value1, Long value2) {
+            addCriterion("session_member_id between", value1, value2, "sessionMemberId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionMemberIdNotBetween(Long value1, Long value2) {
+            addCriterion("session_member_id not between", value1, value2, "sessionMemberId");
+            return (Criteria) this;
+        }
+
+        public Criteria andIsCreatorIsNull() {
+            addCriterion("is_creator is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andIsCreatorIsNotNull() {
+            addCriterion("is_creator is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andIsCreatorEqualTo(Byte value) {
+            addCriterion("is_creator =", value, "isCreator");
+            return (Criteria) this;
+        }
+
+        public Criteria andIsCreatorNotEqualTo(Byte value) {
+            addCriterion("is_creator <>", value, "isCreator");
+            return (Criteria) this;
+        }
+
+        public Criteria andIsCreatorGreaterThan(Byte value) {
+            addCriterion("is_creator >", value, "isCreator");
+            return (Criteria) this;
+        }
+
+        public Criteria andIsCreatorGreaterThanOrEqualTo(Byte value) {
+            addCriterion("is_creator >=", value, "isCreator");
+            return (Criteria) this;
+        }
+
+        public Criteria andIsCreatorLessThan(Byte value) {
+            addCriterion("is_creator <", value, "isCreator");
+            return (Criteria) this;
+        }
+
+        public Criteria andIsCreatorLessThanOrEqualTo(Byte value) {
+            addCriterion("is_creator <=", value, "isCreator");
+            return (Criteria) this;
+        }
+
+        public Criteria andIsCreatorIn(List<Byte> values) {
+            addCriterion("is_creator in", values, "isCreator");
+            return (Criteria) this;
+        }
+
+        public Criteria andIsCreatorNotIn(List<Byte> values) {
+            addCriterion("is_creator not in", values, "isCreator");
+            return (Criteria) this;
+        }
+
+        public Criteria andIsCreatorBetween(Byte value1, Byte value2) {
+            addCriterion("is_creator between", value1, value2, "isCreator");
+            return (Criteria) this;
+        }
+
+        public Criteria andIsCreatorNotBetween(Byte value1, Byte value2) {
+            addCriterion("is_creator not between", value1, value2, "isCreator");
+            return (Criteria) this;
+        }
+
+        public Criteria andIsAdminIsNull() {
+            addCriterion("is_admin is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andIsAdminIsNotNull() {
+            addCriterion("is_admin is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andIsAdminEqualTo(Byte value) {
+            addCriterion("is_admin =", value, "isAdmin");
+            return (Criteria) this;
+        }
+
+        public Criteria andIsAdminNotEqualTo(Byte value) {
+            addCriterion("is_admin <>", value, "isAdmin");
+            return (Criteria) this;
+        }
+
+        public Criteria andIsAdminGreaterThan(Byte value) {
+            addCriterion("is_admin >", value, "isAdmin");
+            return (Criteria) this;
+        }
+
+        public Criteria andIsAdminGreaterThanOrEqualTo(Byte value) {
+            addCriterion("is_admin >=", value, "isAdmin");
+            return (Criteria) this;
+        }
+
+        public Criteria andIsAdminLessThan(Byte value) {
+            addCriterion("is_admin <", value, "isAdmin");
+            return (Criteria) this;
+        }
+
+        public Criteria andIsAdminLessThanOrEqualTo(Byte value) {
+            addCriterion("is_admin <=", value, "isAdmin");
+            return (Criteria) this;
+        }
+
+        public Criteria andIsAdminIn(List<Byte> values) {
+            addCriterion("is_admin in", values, "isAdmin");
+            return (Criteria) this;
+        }
+
+        public Criteria andIsAdminNotIn(List<Byte> values) {
+            addCriterion("is_admin not in", values, "isAdmin");
+            return (Criteria) this;
+        }
+
+        public Criteria andIsAdminBetween(Byte value1, Byte value2) {
+            addCriterion("is_admin between", value1, value2, "isAdmin");
+            return (Criteria) this;
+        }
+
+        public Criteria andIsAdminNotBetween(Byte value1, Byte value2) {
+            addCriterion("is_admin not between", value1, value2, "isAdmin");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionAliasIsNull() {
+            addCriterion("session_alias is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionAliasIsNotNull() {
+            addCriterion("session_alias is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionAliasEqualTo(String value) {
+            addCriterion("session_alias =", value, "sessionAlias");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionAliasNotEqualTo(String value) {
+            addCriterion("session_alias <>", value, "sessionAlias");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionAliasGreaterThan(String value) {
+            addCriterion("session_alias >", value, "sessionAlias");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionAliasGreaterThanOrEqualTo(String value) {
+            addCriterion("session_alias >=", value, "sessionAlias");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionAliasLessThan(String value) {
+            addCriterion("session_alias <", value, "sessionAlias");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionAliasLessThanOrEqualTo(String value) {
+            addCriterion("session_alias <=", value, "sessionAlias");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionAliasLike(String value) {
+            addCriterion("session_alias like", value, "sessionAlias");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionAliasNotLike(String value) {
+            addCriterion("session_alias not like", value, "sessionAlias");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionAliasIn(List<String> values) {
+            addCriterion("session_alias in", values, "sessionAlias");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionAliasNotIn(List<String> values) {
+            addCriterion("session_alias not in", values, "sessionAlias");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionAliasBetween(String value1, String value2) {
+            addCriterion("session_alias between", value1, value2, "sessionAlias");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionAliasNotBetween(String value1, String value2) {
+            addCriterion("session_alias not between", value1, value2, "sessionAlias");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByIsNull() {
+            addCriterion("create_by is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByIsNotNull() {
+            addCriterion("create_by is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByEqualTo(String value) {
+            addCriterion("create_by =", value, "createBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByNotEqualTo(String value) {
+            addCriterion("create_by <>", value, "createBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByGreaterThan(String value) {
+            addCriterion("create_by >", value, "createBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByGreaterThanOrEqualTo(String value) {
+            addCriterion("create_by >=", value, "createBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByLessThan(String value) {
+            addCriterion("create_by <", value, "createBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByLessThanOrEqualTo(String value) {
+            addCriterion("create_by <=", value, "createBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByLike(String value) {
+            addCriterion("create_by like", value, "createBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByNotLike(String value) {
+            addCriterion("create_by not like", value, "createBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByIn(List<String> values) {
+            addCriterion("create_by in", values, "createBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByNotIn(List<String> values) {
+            addCriterion("create_by not in", values, "createBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByBetween(String value1, String value2) {
+            addCriterion("create_by between", value1, value2, "createBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByNotBetween(String value1, String value2) {
+            addCriterion("create_by not between", value1, value2, "createBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateTimeIsNull() {
+            addCriterion("create_time is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateTimeIsNotNull() {
+            addCriterion("create_time is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateTimeEqualTo(Date value) {
+            addCriterion("create_time =", value, "createTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateTimeNotEqualTo(Date value) {
+            addCriterion("create_time <>", value, "createTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateTimeGreaterThan(Date value) {
+            addCriterion("create_time >", value, "createTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateTimeGreaterThanOrEqualTo(Date value) {
+            addCriterion("create_time >=", value, "createTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateTimeLessThan(Date value) {
+            addCriterion("create_time <", value, "createTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateTimeLessThanOrEqualTo(Date value) {
+            addCriterion("create_time <=", value, "createTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateTimeIn(List<Date> values) {
+            addCriterion("create_time in", values, "createTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateTimeNotIn(List<Date> values) {
+            addCriterion("create_time not in", values, "createTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateTimeBetween(Date value1, Date value2) {
+            addCriterion("create_time between", value1, value2, "createTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateTimeNotBetween(Date value1, Date value2) {
+            addCriterion("create_time not between", value1, value2, "createTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByIsNull() {
+            addCriterion("update_by is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByIsNotNull() {
+            addCriterion("update_by is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByEqualTo(String value) {
+            addCriterion("update_by =", value, "updateBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByNotEqualTo(String value) {
+            addCriterion("update_by <>", value, "updateBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByGreaterThan(String value) {
+            addCriterion("update_by >", value, "updateBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByGreaterThanOrEqualTo(String value) {
+            addCriterion("update_by >=", value, "updateBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByLessThan(String value) {
+            addCriterion("update_by <", value, "updateBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByLessThanOrEqualTo(String value) {
+            addCriterion("update_by <=", value, "updateBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByLike(String value) {
+            addCriterion("update_by like", value, "updateBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByNotLike(String value) {
+            addCriterion("update_by not like", value, "updateBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByIn(List<String> values) {
+            addCriterion("update_by in", values, "updateBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByNotIn(List<String> values) {
+            addCriterion("update_by not in", values, "updateBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByBetween(String value1, String value2) {
+            addCriterion("update_by between", value1, value2, "updateBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByNotBetween(String value1, String value2) {
+            addCriterion("update_by not between", value1, value2, "updateBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateTimeIsNull() {
+            addCriterion("update_time is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateTimeIsNotNull() {
+            addCriterion("update_time is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateTimeEqualTo(Date value) {
+            addCriterion("update_time =", value, "updateTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateTimeNotEqualTo(Date value) {
+            addCriterion("update_time <>", value, "updateTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateTimeGreaterThan(Date value) {
+            addCriterion("update_time >", value, "updateTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateTimeGreaterThanOrEqualTo(Date value) {
+            addCriterion("update_time >=", value, "updateTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateTimeLessThan(Date value) {
+            addCriterion("update_time <", value, "updateTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateTimeLessThanOrEqualTo(Date value) {
+            addCriterion("update_time <=", value, "updateTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateTimeIn(List<Date> values) {
+            addCriterion("update_time in", values, "updateTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateTimeNotIn(List<Date> values) {
+            addCriterion("update_time not in", values, "updateTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateTimeBetween(Date value1, Date value2) {
+            addCriterion("update_time between", value1, value2, "updateTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateTimeNotBetween(Date value1, Date value2) {
+            addCriterion("update_time not between", value1, value2, "updateTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelFlagIsNull() {
+            addCriterion("del_flag is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelFlagIsNotNull() {
+            addCriterion("del_flag is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelFlagEqualTo(Byte value) {
+            addCriterion("del_flag =", value, "delFlag");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelFlagNotEqualTo(Byte value) {
+            addCriterion("del_flag <>", value, "delFlag");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelFlagGreaterThan(Byte value) {
+            addCriterion("del_flag >", value, "delFlag");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelFlagGreaterThanOrEqualTo(Byte value) {
+            addCriterion("del_flag >=", value, "delFlag");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelFlagLessThan(Byte value) {
+            addCriterion("del_flag <", value, "delFlag");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelFlagLessThanOrEqualTo(Byte value) {
+            addCriterion("del_flag <=", value, "delFlag");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelFlagIn(List<Byte> values) {
+            addCriterion("del_flag in", values, "delFlag");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelFlagNotIn(List<Byte> values) {
+            addCriterion("del_flag not in", values, "delFlag");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelFlagBetween(Byte value1, Byte value2) {
+            addCriterion("del_flag between", value1, value2, "delFlag");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelFlagNotBetween(Byte value1, Byte value2) {
+            addCriterion("del_flag not between", value1, value2, "delFlag");
+            return (Criteria) this;
+        }
+    }
+
+    public static class Criteria extends GeneratedCriteria {
+
+        protected Criteria() {
+            super();
+        }
+    }
+
+    public static class Criterion {
+        private String condition;
+
+        private Object value;
+
+        private Object secondValue;
+
+        private boolean noValue;
+
+        private boolean singleValue;
+
+        private boolean betweenValue;
+
+        private boolean listValue;
+
+        private String typeHandler;
+
+        public String getCondition() {
+            return condition;
+        }
+
+        public Object getValue() {
+            return value;
+        }
+
+        public Object getSecondValue() {
+            return secondValue;
+        }
+
+        public boolean isNoValue() {
+            return noValue;
+        }
+
+        public boolean isSingleValue() {
+            return singleValue;
+        }
+
+        public boolean isBetweenValue() {
+            return betweenValue;
+        }
+
+        public boolean isListValue() {
+            return listValue;
+        }
+
+        public String getTypeHandler() {
+            return typeHandler;
+        }
+
+        protected Criterion(String condition) {
+            super();
+            this.condition = condition;
+            this.typeHandler = null;
+            this.noValue = true;
+        }
+
+        protected Criterion(String condition, Object value, String typeHandler) {
+            super();
+            this.condition = condition;
+            this.value = value;
+            this.typeHandler = typeHandler;
+            if (value instanceof List<?>) {
+                this.listValue = true;
+            } else {
+                this.singleValue = true;
+            }
+        }
+
+        protected Criterion(String condition, Object value) {
+            this(condition, value, null);
+        }
+
+        protected Criterion(String condition, Object value, Object secondValue, String typeHandler) {
+            super();
+            this.condition = condition;
+            this.value = value;
+            this.secondValue = secondValue;
+            this.typeHandler = typeHandler;
+            this.betweenValue = true;
+        }
+
+        protected Criterion(String condition, Object value, Object secondValue) {
+            this(condition, value, secondValue, null);
+        }
+    }
+}
\ No newline at end of file
diff --git a/research-system/src/main/java/com/research/system/domain/po/ChatSessionMessages.java b/research-system/src/main/java/com/research/system/domain/po/ChatSessionMessages.java
new file mode 100644
index 00000000..ba6d709a
--- /dev/null
+++ b/research-system/src/main/java/com/research/system/domain/po/ChatSessionMessages.java
@@ -0,0 +1,150 @@
+package com.research.system.domain.po;
+
+import java.io.Serializable;
+import java.util.Date;
+
+public class ChatSessionMessages implements Serializable {
+    private Long id;
+
+    private Long sessionId;
+
+    private Long senderId;
+
+    private Byte contentType;
+
+    private String content;
+
+    private Long referencedMessageId;
+
+    private String mentionedUsers;
+
+    private String createBy;
+
+    private Date createTime;
+
+    private String updateBy;
+
+    private Date updateTime;
+
+    private Byte delFlag;
+
+    private static final long serialVersionUID = 1L;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public Long getSessionId() {
+        return sessionId;
+    }
+
+    public void setSessionId(Long sessionId) {
+        this.sessionId = sessionId;
+    }
+
+    public Long getSenderId() {
+        return senderId;
+    }
+
+    public void setSenderId(Long senderId) {
+        this.senderId = senderId;
+    }
+
+    public Byte getContentType() {
+        return contentType;
+    }
+
+    public void setContentType(Byte contentType) {
+        this.contentType = contentType;
+    }
+
+    public String getContent() {
+        return content;
+    }
+
+    public void setContent(String content) {
+        this.content = content == null ? null : content.trim();
+    }
+
+    public Long getReferencedMessageId() {
+        return referencedMessageId;
+    }
+
+    public void setReferencedMessageId(Long referencedMessageId) {
+        this.referencedMessageId = referencedMessageId;
+    }
+
+    public String getMentionedUsers() {
+        return mentionedUsers;
+    }
+
+    public void setMentionedUsers(String mentionedUsers) {
+        this.mentionedUsers = mentionedUsers == null ? null : mentionedUsers.trim();
+    }
+
+    public String getCreateBy() {
+        return createBy;
+    }
+
+    public void setCreateBy(String createBy) {
+        this.createBy = createBy == null ? null : createBy.trim();
+    }
+
+    public Date getCreateTime() {
+        return createTime;
+    }
+
+    public void setCreateTime(Date createTime) {
+        this.createTime = createTime;
+    }
+
+    public String getUpdateBy() {
+        return updateBy;
+    }
+
+    public void setUpdateBy(String updateBy) {
+        this.updateBy = updateBy == null ? null : updateBy.trim();
+    }
+
+    public Date getUpdateTime() {
+        return updateTime;
+    }
+
+    public void setUpdateTime(Date updateTime) {
+        this.updateTime = updateTime;
+    }
+
+    public Byte getDelFlag() {
+        return delFlag;
+    }
+
+    public void setDelFlag(Byte delFlag) {
+        this.delFlag = delFlag;
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append(getClass().getSimpleName());
+        sb.append(" [");
+        sb.append("Hash = ").append(hashCode());
+        sb.append(", id=").append(id);
+        sb.append(", sessionId=").append(sessionId);
+        sb.append(", senderId=").append(senderId);
+        sb.append(", contentType=").append(contentType);
+        sb.append(", content=").append(content);
+        sb.append(", referencedMessageId=").append(referencedMessageId);
+        sb.append(", mentionedUsers=").append(mentionedUsers);
+        sb.append(", createBy=").append(createBy);
+        sb.append(", createTime=").append(createTime);
+        sb.append(", updateBy=").append(updateBy);
+        sb.append(", updateTime=").append(updateTime);
+        sb.append(", delFlag=").append(delFlag);
+        sb.append("]");
+        return sb.toString();
+    }
+}
\ No newline at end of file
diff --git a/research-system/src/main/java/com/research/system/domain/po/ChatSessionMessagesExample.java b/research-system/src/main/java/com/research/system/domain/po/ChatSessionMessagesExample.java
new file mode 100644
index 00000000..88afbfed
--- /dev/null
+++ b/research-system/src/main/java/com/research/system/domain/po/ChatSessionMessagesExample.java
@@ -0,0 +1,961 @@
+package com.research.system.domain.po;
+
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+
+public class ChatSessionMessagesExample {
+    protected String orderByClause;
+
+    protected boolean distinct;
+
+    protected List<Criteria> oredCriteria;
+
+    public ChatSessionMessagesExample() {
+        oredCriteria = new ArrayList<Criteria>();
+    }
+
+    public void setOrderByClause(String orderByClause) {
+        this.orderByClause = orderByClause;
+    }
+
+    public String getOrderByClause() {
+        return orderByClause;
+    }
+
+    public void setDistinct(boolean distinct) {
+        this.distinct = distinct;
+    }
+
+    public boolean isDistinct() {
+        return distinct;
+    }
+
+    public List<Criteria> getOredCriteria() {
+        return oredCriteria;
+    }
+
+    public void or(Criteria criteria) {
+        oredCriteria.add(criteria);
+    }
+
+    public Criteria or() {
+        Criteria criteria = createCriteriaInternal();
+        oredCriteria.add(criteria);
+        return criteria;
+    }
+
+    public Criteria createCriteria() {
+        Criteria criteria = createCriteriaInternal();
+        if (oredCriteria.size() == 0) {
+            oredCriteria.add(criteria);
+        }
+        return criteria;
+    }
+
+    protected Criteria createCriteriaInternal() {
+        Criteria criteria = new Criteria();
+        return criteria;
+    }
+
+    public void clear() {
+        oredCriteria.clear();
+        orderByClause = null;
+        distinct = false;
+    }
+
+    protected abstract static class GeneratedCriteria {
+        protected List<Criterion> criteria;
+
+        protected GeneratedCriteria() {
+            super();
+            criteria = new ArrayList<Criterion>();
+        }
+
+        public boolean isValid() {
+            return criteria.size() > 0;
+        }
+
+        public List<Criterion> getAllCriteria() {
+            return criteria;
+        }
+
+        public List<Criterion> getCriteria() {
+            return criteria;
+        }
+
+        protected void addCriterion(String condition) {
+            if (condition == null) {
+                throw new RuntimeException("Value for condition cannot be null");
+            }
+            criteria.add(new Criterion(condition));
+        }
+
+        protected void addCriterion(String condition, Object value, String property) {
+            if (value == null) {
+                throw new RuntimeException("Value for " + property + " cannot be null");
+            }
+            criteria.add(new Criterion(condition, value));
+        }
+
+        protected void addCriterion(String condition, Object value1, Object value2, String property) {
+            if (value1 == null || value2 == null) {
+                throw new RuntimeException("Between values for " + property + " cannot be null");
+            }
+            criteria.add(new Criterion(condition, value1, value2));
+        }
+
+        public Criteria andIdIsNull() {
+            addCriterion("id is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andIdIsNotNull() {
+            addCriterion("id is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andIdEqualTo(Long value) {
+            addCriterion("id =", value, "id");
+            return (Criteria) this;
+        }
+
+        public Criteria andIdNotEqualTo(Long value) {
+            addCriterion("id <>", value, "id");
+            return (Criteria) this;
+        }
+
+        public Criteria andIdGreaterThan(Long value) {
+            addCriterion("id >", value, "id");
+            return (Criteria) this;
+        }
+
+        public Criteria andIdGreaterThanOrEqualTo(Long value) {
+            addCriterion("id >=", value, "id");
+            return (Criteria) this;
+        }
+
+        public Criteria andIdLessThan(Long value) {
+            addCriterion("id <", value, "id");
+            return (Criteria) this;
+        }
+
+        public Criteria andIdLessThanOrEqualTo(Long value) {
+            addCriterion("id <=", value, "id");
+            return (Criteria) this;
+        }
+
+        public Criteria andIdIn(List<Long> values) {
+            addCriterion("id in", values, "id");
+            return (Criteria) this;
+        }
+
+        public Criteria andIdNotIn(List<Long> values) {
+            addCriterion("id not in", values, "id");
+            return (Criteria) this;
+        }
+
+        public Criteria andIdBetween(Long value1, Long value2) {
+            addCriterion("id between", value1, value2, "id");
+            return (Criteria) this;
+        }
+
+        public Criteria andIdNotBetween(Long value1, Long value2) {
+            addCriterion("id not between", value1, value2, "id");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionIdIsNull() {
+            addCriterion("session_id is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionIdIsNotNull() {
+            addCriterion("session_id is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionIdEqualTo(Long value) {
+            addCriterion("session_id =", value, "sessionId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionIdNotEqualTo(Long value) {
+            addCriterion("session_id <>", value, "sessionId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionIdGreaterThan(Long value) {
+            addCriterion("session_id >", value, "sessionId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionIdGreaterThanOrEqualTo(Long value) {
+            addCriterion("session_id >=", value, "sessionId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionIdLessThan(Long value) {
+            addCriterion("session_id <", value, "sessionId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionIdLessThanOrEqualTo(Long value) {
+            addCriterion("session_id <=", value, "sessionId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionIdIn(List<Long> values) {
+            addCriterion("session_id in", values, "sessionId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionIdNotIn(List<Long> values) {
+            addCriterion("session_id not in", values, "sessionId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionIdBetween(Long value1, Long value2) {
+            addCriterion("session_id between", value1, value2, "sessionId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionIdNotBetween(Long value1, Long value2) {
+            addCriterion("session_id not between", value1, value2, "sessionId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSenderIdIsNull() {
+            addCriterion("sender_id is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andSenderIdIsNotNull() {
+            addCriterion("sender_id is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andSenderIdEqualTo(Long value) {
+            addCriterion("sender_id =", value, "senderId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSenderIdNotEqualTo(Long value) {
+            addCriterion("sender_id <>", value, "senderId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSenderIdGreaterThan(Long value) {
+            addCriterion("sender_id >", value, "senderId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSenderIdGreaterThanOrEqualTo(Long value) {
+            addCriterion("sender_id >=", value, "senderId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSenderIdLessThan(Long value) {
+            addCriterion("sender_id <", value, "senderId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSenderIdLessThanOrEqualTo(Long value) {
+            addCriterion("sender_id <=", value, "senderId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSenderIdIn(List<Long> values) {
+            addCriterion("sender_id in", values, "senderId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSenderIdNotIn(List<Long> values) {
+            addCriterion("sender_id not in", values, "senderId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSenderIdBetween(Long value1, Long value2) {
+            addCriterion("sender_id between", value1, value2, "senderId");
+            return (Criteria) this;
+        }
+
+        public Criteria andSenderIdNotBetween(Long value1, Long value2) {
+            addCriterion("sender_id not between", value1, value2, "senderId");
+            return (Criteria) this;
+        }
+
+        public Criteria andContentTypeIsNull() {
+            addCriterion("content_type is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andContentTypeIsNotNull() {
+            addCriterion("content_type is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andContentTypeEqualTo(Byte value) {
+            addCriterion("content_type =", value, "contentType");
+            return (Criteria) this;
+        }
+
+        public Criteria andContentTypeNotEqualTo(Byte value) {
+            addCriterion("content_type <>", value, "contentType");
+            return (Criteria) this;
+        }
+
+        public Criteria andContentTypeGreaterThan(Byte value) {
+            addCriterion("content_type >", value, "contentType");
+            return (Criteria) this;
+        }
+
+        public Criteria andContentTypeGreaterThanOrEqualTo(Byte value) {
+            addCriterion("content_type >=", value, "contentType");
+            return (Criteria) this;
+        }
+
+        public Criteria andContentTypeLessThan(Byte value) {
+            addCriterion("content_type <", value, "contentType");
+            return (Criteria) this;
+        }
+
+        public Criteria andContentTypeLessThanOrEqualTo(Byte value) {
+            addCriterion("content_type <=", value, "contentType");
+            return (Criteria) this;
+        }
+
+        public Criteria andContentTypeIn(List<Byte> values) {
+            addCriterion("content_type in", values, "contentType");
+            return (Criteria) this;
+        }
+
+        public Criteria andContentTypeNotIn(List<Byte> values) {
+            addCriterion("content_type not in", values, "contentType");
+            return (Criteria) this;
+        }
+
+        public Criteria andContentTypeBetween(Byte value1, Byte value2) {
+            addCriterion("content_type between", value1, value2, "contentType");
+            return (Criteria) this;
+        }
+
+        public Criteria andContentTypeNotBetween(Byte value1, Byte value2) {
+            addCriterion("content_type not between", value1, value2, "contentType");
+            return (Criteria) this;
+        }
+
+        public Criteria andContentIsNull() {
+            addCriterion("content is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andContentIsNotNull() {
+            addCriterion("content is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andContentEqualTo(String value) {
+            addCriterion("content =", value, "content");
+            return (Criteria) this;
+        }
+
+        public Criteria andContentNotEqualTo(String value) {
+            addCriterion("content <>", value, "content");
+            return (Criteria) this;
+        }
+
+        public Criteria andContentGreaterThan(String value) {
+            addCriterion("content >", value, "content");
+            return (Criteria) this;
+        }
+
+        public Criteria andContentGreaterThanOrEqualTo(String value) {
+            addCriterion("content >=", value, "content");
+            return (Criteria) this;
+        }
+
+        public Criteria andContentLessThan(String value) {
+            addCriterion("content <", value, "content");
+            return (Criteria) this;
+        }
+
+        public Criteria andContentLessThanOrEqualTo(String value) {
+            addCriterion("content <=", value, "content");
+            return (Criteria) this;
+        }
+
+        public Criteria andContentLike(String value) {
+            addCriterion("content like", value, "content");
+            return (Criteria) this;
+        }
+
+        public Criteria andContentNotLike(String value) {
+            addCriterion("content not like", value, "content");
+            return (Criteria) this;
+        }
+
+        public Criteria andContentIn(List<String> values) {
+            addCriterion("content in", values, "content");
+            return (Criteria) this;
+        }
+
+        public Criteria andContentNotIn(List<String> values) {
+            addCriterion("content not in", values, "content");
+            return (Criteria) this;
+        }
+
+        public Criteria andContentBetween(String value1, String value2) {
+            addCriterion("content between", value1, value2, "content");
+            return (Criteria) this;
+        }
+
+        public Criteria andContentNotBetween(String value1, String value2) {
+            addCriterion("content not between", value1, value2, "content");
+            return (Criteria) this;
+        }
+
+        public Criteria andReferencedMessageIdIsNull() {
+            addCriterion("referenced_message_id is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andReferencedMessageIdIsNotNull() {
+            addCriterion("referenced_message_id is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andReferencedMessageIdEqualTo(Long value) {
+            addCriterion("referenced_message_id =", value, "referencedMessageId");
+            return (Criteria) this;
+        }
+
+        public Criteria andReferencedMessageIdNotEqualTo(Long value) {
+            addCriterion("referenced_message_id <>", value, "referencedMessageId");
+            return (Criteria) this;
+        }
+
+        public Criteria andReferencedMessageIdGreaterThan(Long value) {
+            addCriterion("referenced_message_id >", value, "referencedMessageId");
+            return (Criteria) this;
+        }
+
+        public Criteria andReferencedMessageIdGreaterThanOrEqualTo(Long value) {
+            addCriterion("referenced_message_id >=", value, "referencedMessageId");
+            return (Criteria) this;
+        }
+
+        public Criteria andReferencedMessageIdLessThan(Long value) {
+            addCriterion("referenced_message_id <", value, "referencedMessageId");
+            return (Criteria) this;
+        }
+
+        public Criteria andReferencedMessageIdLessThanOrEqualTo(Long value) {
+            addCriterion("referenced_message_id <=", value, "referencedMessageId");
+            return (Criteria) this;
+        }
+
+        public Criteria andReferencedMessageIdIn(List<Long> values) {
+            addCriterion("referenced_message_id in", values, "referencedMessageId");
+            return (Criteria) this;
+        }
+
+        public Criteria andReferencedMessageIdNotIn(List<Long> values) {
+            addCriterion("referenced_message_id not in", values, "referencedMessageId");
+            return (Criteria) this;
+        }
+
+        public Criteria andReferencedMessageIdBetween(Long value1, Long value2) {
+            addCriterion("referenced_message_id between", value1, value2, "referencedMessageId");
+            return (Criteria) this;
+        }
+
+        public Criteria andReferencedMessageIdNotBetween(Long value1, Long value2) {
+            addCriterion("referenced_message_id not between", value1, value2, "referencedMessageId");
+            return (Criteria) this;
+        }
+
+        public Criteria andMentionedUsersIsNull() {
+            addCriterion("mentioned_users is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andMentionedUsersIsNotNull() {
+            addCriterion("mentioned_users is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andMentionedUsersEqualTo(String value) {
+            addCriterion("mentioned_users =", value, "mentionedUsers");
+            return (Criteria) this;
+        }
+
+        public Criteria andMentionedUsersNotEqualTo(String value) {
+            addCriterion("mentioned_users <>", value, "mentionedUsers");
+            return (Criteria) this;
+        }
+
+        public Criteria andMentionedUsersGreaterThan(String value) {
+            addCriterion("mentioned_users >", value, "mentionedUsers");
+            return (Criteria) this;
+        }
+
+        public Criteria andMentionedUsersGreaterThanOrEqualTo(String value) {
+            addCriterion("mentioned_users >=", value, "mentionedUsers");
+            return (Criteria) this;
+        }
+
+        public Criteria andMentionedUsersLessThan(String value) {
+            addCriterion("mentioned_users <", value, "mentionedUsers");
+            return (Criteria) this;
+        }
+
+        public Criteria andMentionedUsersLessThanOrEqualTo(String value) {
+            addCriterion("mentioned_users <=", value, "mentionedUsers");
+            return (Criteria) this;
+        }
+
+        public Criteria andMentionedUsersLike(String value) {
+            addCriterion("mentioned_users like", value, "mentionedUsers");
+            return (Criteria) this;
+        }
+
+        public Criteria andMentionedUsersNotLike(String value) {
+            addCriterion("mentioned_users not like", value, "mentionedUsers");
+            return (Criteria) this;
+        }
+
+        public Criteria andMentionedUsersIn(List<String> values) {
+            addCriterion("mentioned_users in", values, "mentionedUsers");
+            return (Criteria) this;
+        }
+
+        public Criteria andMentionedUsersNotIn(List<String> values) {
+            addCriterion("mentioned_users not in", values, "mentionedUsers");
+            return (Criteria) this;
+        }
+
+        public Criteria andMentionedUsersBetween(String value1, String value2) {
+            addCriterion("mentioned_users between", value1, value2, "mentionedUsers");
+            return (Criteria) this;
+        }
+
+        public Criteria andMentionedUsersNotBetween(String value1, String value2) {
+            addCriterion("mentioned_users not between", value1, value2, "mentionedUsers");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByIsNull() {
+            addCriterion("create_by is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByIsNotNull() {
+            addCriterion("create_by is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByEqualTo(String value) {
+            addCriterion("create_by =", value, "createBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByNotEqualTo(String value) {
+            addCriterion("create_by <>", value, "createBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByGreaterThan(String value) {
+            addCriterion("create_by >", value, "createBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByGreaterThanOrEqualTo(String value) {
+            addCriterion("create_by >=", value, "createBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByLessThan(String value) {
+            addCriterion("create_by <", value, "createBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByLessThanOrEqualTo(String value) {
+            addCriterion("create_by <=", value, "createBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByLike(String value) {
+            addCriterion("create_by like", value, "createBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByNotLike(String value) {
+            addCriterion("create_by not like", value, "createBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByIn(List<String> values) {
+            addCriterion("create_by in", values, "createBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByNotIn(List<String> values) {
+            addCriterion("create_by not in", values, "createBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByBetween(String value1, String value2) {
+            addCriterion("create_by between", value1, value2, "createBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByNotBetween(String value1, String value2) {
+            addCriterion("create_by not between", value1, value2, "createBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateTimeIsNull() {
+            addCriterion("create_time is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateTimeIsNotNull() {
+            addCriterion("create_time is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateTimeEqualTo(Date value) {
+            addCriterion("create_time =", value, "createTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateTimeNotEqualTo(Date value) {
+            addCriterion("create_time <>", value, "createTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateTimeGreaterThan(Date value) {
+            addCriterion("create_time >", value, "createTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateTimeGreaterThanOrEqualTo(Date value) {
+            addCriterion("create_time >=", value, "createTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateTimeLessThan(Date value) {
+            addCriterion("create_time <", value, "createTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateTimeLessThanOrEqualTo(Date value) {
+            addCriterion("create_time <=", value, "createTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateTimeIn(List<Date> values) {
+            addCriterion("create_time in", values, "createTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateTimeNotIn(List<Date> values) {
+            addCriterion("create_time not in", values, "createTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateTimeBetween(Date value1, Date value2) {
+            addCriterion("create_time between", value1, value2, "createTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateTimeNotBetween(Date value1, Date value2) {
+            addCriterion("create_time not between", value1, value2, "createTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByIsNull() {
+            addCriterion("update_by is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByIsNotNull() {
+            addCriterion("update_by is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByEqualTo(String value) {
+            addCriterion("update_by =", value, "updateBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByNotEqualTo(String value) {
+            addCriterion("update_by <>", value, "updateBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByGreaterThan(String value) {
+            addCriterion("update_by >", value, "updateBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByGreaterThanOrEqualTo(String value) {
+            addCriterion("update_by >=", value, "updateBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByLessThan(String value) {
+            addCriterion("update_by <", value, "updateBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByLessThanOrEqualTo(String value) {
+            addCriterion("update_by <=", value, "updateBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByLike(String value) {
+            addCriterion("update_by like", value, "updateBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByNotLike(String value) {
+            addCriterion("update_by not like", value, "updateBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByIn(List<String> values) {
+            addCriterion("update_by in", values, "updateBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByNotIn(List<String> values) {
+            addCriterion("update_by not in", values, "updateBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByBetween(String value1, String value2) {
+            addCriterion("update_by between", value1, value2, "updateBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByNotBetween(String value1, String value2) {
+            addCriterion("update_by not between", value1, value2, "updateBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateTimeIsNull() {
+            addCriterion("update_time is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateTimeIsNotNull() {
+            addCriterion("update_time is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateTimeEqualTo(Date value) {
+            addCriterion("update_time =", value, "updateTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateTimeNotEqualTo(Date value) {
+            addCriterion("update_time <>", value, "updateTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateTimeGreaterThan(Date value) {
+            addCriterion("update_time >", value, "updateTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateTimeGreaterThanOrEqualTo(Date value) {
+            addCriterion("update_time >=", value, "updateTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateTimeLessThan(Date value) {
+            addCriterion("update_time <", value, "updateTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateTimeLessThanOrEqualTo(Date value) {
+            addCriterion("update_time <=", value, "updateTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateTimeIn(List<Date> values) {
+            addCriterion("update_time in", values, "updateTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateTimeNotIn(List<Date> values) {
+            addCriterion("update_time not in", values, "updateTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateTimeBetween(Date value1, Date value2) {
+            addCriterion("update_time between", value1, value2, "updateTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateTimeNotBetween(Date value1, Date value2) {
+            addCriterion("update_time not between", value1, value2, "updateTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelFlagIsNull() {
+            addCriterion("del_flag is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelFlagIsNotNull() {
+            addCriterion("del_flag is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelFlagEqualTo(Byte value) {
+            addCriterion("del_flag =", value, "delFlag");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelFlagNotEqualTo(Byte value) {
+            addCriterion("del_flag <>", value, "delFlag");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelFlagGreaterThan(Byte value) {
+            addCriterion("del_flag >", value, "delFlag");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelFlagGreaterThanOrEqualTo(Byte value) {
+            addCriterion("del_flag >=", value, "delFlag");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelFlagLessThan(Byte value) {
+            addCriterion("del_flag <", value, "delFlag");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelFlagLessThanOrEqualTo(Byte value) {
+            addCriterion("del_flag <=", value, "delFlag");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelFlagIn(List<Byte> values) {
+            addCriterion("del_flag in", values, "delFlag");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelFlagNotIn(List<Byte> values) {
+            addCriterion("del_flag not in", values, "delFlag");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelFlagBetween(Byte value1, Byte value2) {
+            addCriterion("del_flag between", value1, value2, "delFlag");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelFlagNotBetween(Byte value1, Byte value2) {
+            addCriterion("del_flag not between", value1, value2, "delFlag");
+            return (Criteria) this;
+        }
+    }
+
+    public static class Criteria extends GeneratedCriteria {
+
+        protected Criteria() {
+            super();
+        }
+    }
+
+    public static class Criterion {
+        private String condition;
+
+        private Object value;
+
+        private Object secondValue;
+
+        private boolean noValue;
+
+        private boolean singleValue;
+
+        private boolean betweenValue;
+
+        private boolean listValue;
+
+        private String typeHandler;
+
+        public String getCondition() {
+            return condition;
+        }
+
+        public Object getValue() {
+            return value;
+        }
+
+        public Object getSecondValue() {
+            return secondValue;
+        }
+
+        public boolean isNoValue() {
+            return noValue;
+        }
+
+        public boolean isSingleValue() {
+            return singleValue;
+        }
+
+        public boolean isBetweenValue() {
+            return betweenValue;
+        }
+
+        public boolean isListValue() {
+            return listValue;
+        }
+
+        public String getTypeHandler() {
+            return typeHandler;
+        }
+
+        protected Criterion(String condition) {
+            super();
+            this.condition = condition;
+            this.typeHandler = null;
+            this.noValue = true;
+        }
+
+        protected Criterion(String condition, Object value, String typeHandler) {
+            super();
+            this.condition = condition;
+            this.value = value;
+            this.typeHandler = typeHandler;
+            if (value instanceof List<?>) {
+                this.listValue = true;
+            } else {
+                this.singleValue = true;
+            }
+        }
+
+        protected Criterion(String condition, Object value) {
+            this(condition, value, null);
+        }
+
+        protected Criterion(String condition, Object value, Object secondValue, String typeHandler) {
+            super();
+            this.condition = condition;
+            this.value = value;
+            this.secondValue = secondValue;
+            this.typeHandler = typeHandler;
+            this.betweenValue = true;
+        }
+
+        protected Criterion(String condition, Object value, Object secondValue) {
+            this(condition, value, secondValue, null);
+        }
+    }
+}
\ No newline at end of file
diff --git a/research-system/src/main/java/com/research/system/domain/po/ChatSessions.java b/research-system/src/main/java/com/research/system/domain/po/ChatSessions.java
new file mode 100644
index 00000000..061bf819
--- /dev/null
+++ b/research-system/src/main/java/com/research/system/domain/po/ChatSessions.java
@@ -0,0 +1,139 @@
+package com.research.system.domain.po;
+
+import java.io.Serializable;
+import java.util.Date;
+
+public class ChatSessions implements Serializable {
+    private Long id;
+
+    private Byte sessionType;
+
+    private String sessionName;
+
+    private Long createdBy;
+
+    private Date createdAt;
+
+    private String avatarUrl;
+
+    private String createBy;
+
+    private Date createTime;
+
+    private String updateBy;
+
+    private Date updateTime;
+
+    private Byte delFlag;
+
+    private static final long serialVersionUID = 1L;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public Byte getSessionType() {
+        return sessionType;
+    }
+
+    public void setSessionType(Byte sessionType) {
+        this.sessionType = sessionType;
+    }
+
+    public String getSessionName() {
+        return sessionName;
+    }
+
+    public void setSessionName(String sessionName) {
+        this.sessionName = sessionName == null ? null : sessionName.trim();
+    }
+
+    public Long getCreatedBy() {
+        return createdBy;
+    }
+
+    public void setCreatedBy(Long createdBy) {
+        this.createdBy = createdBy;
+    }
+
+    public Date getCreatedAt() {
+        return createdAt;
+    }
+
+    public void setCreatedAt(Date createdAt) {
+        this.createdAt = createdAt;
+    }
+
+    public String getAvatarUrl() {
+        return avatarUrl;
+    }
+
+    public void setAvatarUrl(String avatarUrl) {
+        this.avatarUrl = avatarUrl == null ? null : avatarUrl.trim();
+    }
+
+    public String getCreateBy() {
+        return createBy;
+    }
+
+    public void setCreateBy(String createBy) {
+        this.createBy = createBy == null ? null : createBy.trim();
+    }
+
+    public Date getCreateTime() {
+        return createTime;
+    }
+
+    public void setCreateTime(Date createTime) {
+        this.createTime = createTime;
+    }
+
+    public String getUpdateBy() {
+        return updateBy;
+    }
+
+    public void setUpdateBy(String updateBy) {
+        this.updateBy = updateBy == null ? null : updateBy.trim();
+    }
+
+    public Date getUpdateTime() {
+        return updateTime;
+    }
+
+    public void setUpdateTime(Date updateTime) {
+        this.updateTime = updateTime;
+    }
+
+    public Byte getDelFlag() {
+        return delFlag;
+    }
+
+    public void setDelFlag(Byte delFlag) {
+        this.delFlag = delFlag;
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append(getClass().getSimpleName());
+        sb.append(" [");
+        sb.append("Hash = ").append(hashCode());
+        sb.append(", id=").append(id);
+        sb.append(", sessionType=").append(sessionType);
+        sb.append(", sessionName=").append(sessionName);
+        sb.append(", createdBy=").append(createdBy);
+        sb.append(", createdAt=").append(createdAt);
+        sb.append(", avatarUrl=").append(avatarUrl);
+        sb.append(", createBy=").append(createBy);
+        sb.append(", createTime=").append(createTime);
+        sb.append(", updateBy=").append(updateBy);
+        sb.append(", updateTime=").append(updateTime);
+        sb.append(", delFlag=").append(delFlag);
+        sb.append("]");
+        return sb.toString();
+    }
+}
\ No newline at end of file
diff --git a/research-system/src/main/java/com/research/system/domain/po/ChatSessionsExample.java b/research-system/src/main/java/com/research/system/domain/po/ChatSessionsExample.java
new file mode 100644
index 00000000..d16cf112
--- /dev/null
+++ b/research-system/src/main/java/com/research/system/domain/po/ChatSessionsExample.java
@@ -0,0 +1,901 @@
+package com.research.system.domain.po;
+
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+
+public class ChatSessionsExample {
+    protected String orderByClause;
+
+    protected boolean distinct;
+
+    protected List<Criteria> oredCriteria;
+
+    public ChatSessionsExample() {
+        oredCriteria = new ArrayList<Criteria>();
+    }
+
+    public void setOrderByClause(String orderByClause) {
+        this.orderByClause = orderByClause;
+    }
+
+    public String getOrderByClause() {
+        return orderByClause;
+    }
+
+    public void setDistinct(boolean distinct) {
+        this.distinct = distinct;
+    }
+
+    public boolean isDistinct() {
+        return distinct;
+    }
+
+    public List<Criteria> getOredCriteria() {
+        return oredCriteria;
+    }
+
+    public void or(Criteria criteria) {
+        oredCriteria.add(criteria);
+    }
+
+    public Criteria or() {
+        Criteria criteria = createCriteriaInternal();
+        oredCriteria.add(criteria);
+        return criteria;
+    }
+
+    public Criteria createCriteria() {
+        Criteria criteria = createCriteriaInternal();
+        if (oredCriteria.size() == 0) {
+            oredCriteria.add(criteria);
+        }
+        return criteria;
+    }
+
+    protected Criteria createCriteriaInternal() {
+        Criteria criteria = new Criteria();
+        return criteria;
+    }
+
+    public void clear() {
+        oredCriteria.clear();
+        orderByClause = null;
+        distinct = false;
+    }
+
+    protected abstract static class GeneratedCriteria {
+        protected List<Criterion> criteria;
+
+        protected GeneratedCriteria() {
+            super();
+            criteria = new ArrayList<Criterion>();
+        }
+
+        public boolean isValid() {
+            return criteria.size() > 0;
+        }
+
+        public List<Criterion> getAllCriteria() {
+            return criteria;
+        }
+
+        public List<Criterion> getCriteria() {
+            return criteria;
+        }
+
+        protected void addCriterion(String condition) {
+            if (condition == null) {
+                throw new RuntimeException("Value for condition cannot be null");
+            }
+            criteria.add(new Criterion(condition));
+        }
+
+        protected void addCriterion(String condition, Object value, String property) {
+            if (value == null) {
+                throw new RuntimeException("Value for " + property + " cannot be null");
+            }
+            criteria.add(new Criterion(condition, value));
+        }
+
+        protected void addCriterion(String condition, Object value1, Object value2, String property) {
+            if (value1 == null || value2 == null) {
+                throw new RuntimeException("Between values for " + property + " cannot be null");
+            }
+            criteria.add(new Criterion(condition, value1, value2));
+        }
+
+        public Criteria andIdIsNull() {
+            addCriterion("id is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andIdIsNotNull() {
+            addCriterion("id is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andIdEqualTo(Long value) {
+            addCriterion("id =", value, "id");
+            return (Criteria) this;
+        }
+
+        public Criteria andIdNotEqualTo(Long value) {
+            addCriterion("id <>", value, "id");
+            return (Criteria) this;
+        }
+
+        public Criteria andIdGreaterThan(Long value) {
+            addCriterion("id >", value, "id");
+            return (Criteria) this;
+        }
+
+        public Criteria andIdGreaterThanOrEqualTo(Long value) {
+            addCriterion("id >=", value, "id");
+            return (Criteria) this;
+        }
+
+        public Criteria andIdLessThan(Long value) {
+            addCriterion("id <", value, "id");
+            return (Criteria) this;
+        }
+
+        public Criteria andIdLessThanOrEqualTo(Long value) {
+            addCriterion("id <=", value, "id");
+            return (Criteria) this;
+        }
+
+        public Criteria andIdIn(List<Long> values) {
+            addCriterion("id in", values, "id");
+            return (Criteria) this;
+        }
+
+        public Criteria andIdNotIn(List<Long> values) {
+            addCriterion("id not in", values, "id");
+            return (Criteria) this;
+        }
+
+        public Criteria andIdBetween(Long value1, Long value2) {
+            addCriterion("id between", value1, value2, "id");
+            return (Criteria) this;
+        }
+
+        public Criteria andIdNotBetween(Long value1, Long value2) {
+            addCriterion("id not between", value1, value2, "id");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionTypeIsNull() {
+            addCriterion("session_type is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionTypeIsNotNull() {
+            addCriterion("session_type is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionTypeEqualTo(Byte value) {
+            addCriterion("session_type =", value, "sessionType");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionTypeNotEqualTo(Byte value) {
+            addCriterion("session_type <>", value, "sessionType");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionTypeGreaterThan(Byte value) {
+            addCriterion("session_type >", value, "sessionType");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionTypeGreaterThanOrEqualTo(Byte value) {
+            addCriterion("session_type >=", value, "sessionType");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionTypeLessThan(Byte value) {
+            addCriterion("session_type <", value, "sessionType");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionTypeLessThanOrEqualTo(Byte value) {
+            addCriterion("session_type <=", value, "sessionType");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionTypeIn(List<Byte> values) {
+            addCriterion("session_type in", values, "sessionType");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionTypeNotIn(List<Byte> values) {
+            addCriterion("session_type not in", values, "sessionType");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionTypeBetween(Byte value1, Byte value2) {
+            addCriterion("session_type between", value1, value2, "sessionType");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionTypeNotBetween(Byte value1, Byte value2) {
+            addCriterion("session_type not between", value1, value2, "sessionType");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionNameIsNull() {
+            addCriterion("session_name is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionNameIsNotNull() {
+            addCriterion("session_name is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionNameEqualTo(String value) {
+            addCriterion("session_name =", value, "sessionName");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionNameNotEqualTo(String value) {
+            addCriterion("session_name <>", value, "sessionName");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionNameGreaterThan(String value) {
+            addCriterion("session_name >", value, "sessionName");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionNameGreaterThanOrEqualTo(String value) {
+            addCriterion("session_name >=", value, "sessionName");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionNameLessThan(String value) {
+            addCriterion("session_name <", value, "sessionName");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionNameLessThanOrEqualTo(String value) {
+            addCriterion("session_name <=", value, "sessionName");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionNameLike(String value) {
+            addCriterion("session_name like", value, "sessionName");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionNameNotLike(String value) {
+            addCriterion("session_name not like", value, "sessionName");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionNameIn(List<String> values) {
+            addCriterion("session_name in", values, "sessionName");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionNameNotIn(List<String> values) {
+            addCriterion("session_name not in", values, "sessionName");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionNameBetween(String value1, String value2) {
+            addCriterion("session_name between", value1, value2, "sessionName");
+            return (Criteria) this;
+        }
+
+        public Criteria andSessionNameNotBetween(String value1, String value2) {
+            addCriterion("session_name not between", value1, value2, "sessionName");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreatedByIsNull() {
+            addCriterion("created_by is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreatedByIsNotNull() {
+            addCriterion("created_by is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreatedByEqualTo(Long value) {
+            addCriterion("created_by =", value, "createdBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreatedByNotEqualTo(Long value) {
+            addCriterion("created_by <>", value, "createdBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreatedByGreaterThan(Long value) {
+            addCriterion("created_by >", value, "createdBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreatedByGreaterThanOrEqualTo(Long value) {
+            addCriterion("created_by >=", value, "createdBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreatedByLessThan(Long value) {
+            addCriterion("created_by <", value, "createdBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreatedByLessThanOrEqualTo(Long value) {
+            addCriterion("created_by <=", value, "createdBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreatedByIn(List<Long> values) {
+            addCriterion("created_by in", values, "createdBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreatedByNotIn(List<Long> values) {
+            addCriterion("created_by not in", values, "createdBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreatedByBetween(Long value1, Long value2) {
+            addCriterion("created_by between", value1, value2, "createdBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreatedByNotBetween(Long value1, Long value2) {
+            addCriterion("created_by not between", value1, value2, "createdBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreatedAtIsNull() {
+            addCriterion("created_at is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreatedAtIsNotNull() {
+            addCriterion("created_at is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreatedAtEqualTo(Date value) {
+            addCriterion("created_at =", value, "createdAt");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreatedAtNotEqualTo(Date value) {
+            addCriterion("created_at <>", value, "createdAt");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreatedAtGreaterThan(Date value) {
+            addCriterion("created_at >", value, "createdAt");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreatedAtGreaterThanOrEqualTo(Date value) {
+            addCriterion("created_at >=", value, "createdAt");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreatedAtLessThan(Date value) {
+            addCriterion("created_at <", value, "createdAt");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreatedAtLessThanOrEqualTo(Date value) {
+            addCriterion("created_at <=", value, "createdAt");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreatedAtIn(List<Date> values) {
+            addCriterion("created_at in", values, "createdAt");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreatedAtNotIn(List<Date> values) {
+            addCriterion("created_at not in", values, "createdAt");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreatedAtBetween(Date value1, Date value2) {
+            addCriterion("created_at between", value1, value2, "createdAt");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreatedAtNotBetween(Date value1, Date value2) {
+            addCriterion("created_at not between", value1, value2, "createdAt");
+            return (Criteria) this;
+        }
+
+        public Criteria andAvatarUrlIsNull() {
+            addCriterion("avatar_url is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andAvatarUrlIsNotNull() {
+            addCriterion("avatar_url is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andAvatarUrlEqualTo(String value) {
+            addCriterion("avatar_url =", value, "avatarUrl");
+            return (Criteria) this;
+        }
+
+        public Criteria andAvatarUrlNotEqualTo(String value) {
+            addCriterion("avatar_url <>", value, "avatarUrl");
+            return (Criteria) this;
+        }
+
+        public Criteria andAvatarUrlGreaterThan(String value) {
+            addCriterion("avatar_url >", value, "avatarUrl");
+            return (Criteria) this;
+        }
+
+        public Criteria andAvatarUrlGreaterThanOrEqualTo(String value) {
+            addCriterion("avatar_url >=", value, "avatarUrl");
+            return (Criteria) this;
+        }
+
+        public Criteria andAvatarUrlLessThan(String value) {
+            addCriterion("avatar_url <", value, "avatarUrl");
+            return (Criteria) this;
+        }
+
+        public Criteria andAvatarUrlLessThanOrEqualTo(String value) {
+            addCriterion("avatar_url <=", value, "avatarUrl");
+            return (Criteria) this;
+        }
+
+        public Criteria andAvatarUrlLike(String value) {
+            addCriterion("avatar_url like", value, "avatarUrl");
+            return (Criteria) this;
+        }
+
+        public Criteria andAvatarUrlNotLike(String value) {
+            addCriterion("avatar_url not like", value, "avatarUrl");
+            return (Criteria) this;
+        }
+
+        public Criteria andAvatarUrlIn(List<String> values) {
+            addCriterion("avatar_url in", values, "avatarUrl");
+            return (Criteria) this;
+        }
+
+        public Criteria andAvatarUrlNotIn(List<String> values) {
+            addCriterion("avatar_url not in", values, "avatarUrl");
+            return (Criteria) this;
+        }
+
+        public Criteria andAvatarUrlBetween(String value1, String value2) {
+            addCriterion("avatar_url between", value1, value2, "avatarUrl");
+            return (Criteria) this;
+        }
+
+        public Criteria andAvatarUrlNotBetween(String value1, String value2) {
+            addCriterion("avatar_url not between", value1, value2, "avatarUrl");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByIsNull() {
+            addCriterion("create_by is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByIsNotNull() {
+            addCriterion("create_by is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByEqualTo(String value) {
+            addCriterion("create_by =", value, "createBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByNotEqualTo(String value) {
+            addCriterion("create_by <>", value, "createBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByGreaterThan(String value) {
+            addCriterion("create_by >", value, "createBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByGreaterThanOrEqualTo(String value) {
+            addCriterion("create_by >=", value, "createBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByLessThan(String value) {
+            addCriterion("create_by <", value, "createBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByLessThanOrEqualTo(String value) {
+            addCriterion("create_by <=", value, "createBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByLike(String value) {
+            addCriterion("create_by like", value, "createBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByNotLike(String value) {
+            addCriterion("create_by not like", value, "createBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByIn(List<String> values) {
+            addCriterion("create_by in", values, "createBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByNotIn(List<String> values) {
+            addCriterion("create_by not in", values, "createBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByBetween(String value1, String value2) {
+            addCriterion("create_by between", value1, value2, "createBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateByNotBetween(String value1, String value2) {
+            addCriterion("create_by not between", value1, value2, "createBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateTimeIsNull() {
+            addCriterion("create_time is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateTimeIsNotNull() {
+            addCriterion("create_time is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateTimeEqualTo(Date value) {
+            addCriterion("create_time =", value, "createTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateTimeNotEqualTo(Date value) {
+            addCriterion("create_time <>", value, "createTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateTimeGreaterThan(Date value) {
+            addCriterion("create_time >", value, "createTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateTimeGreaterThanOrEqualTo(Date value) {
+            addCriterion("create_time >=", value, "createTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateTimeLessThan(Date value) {
+            addCriterion("create_time <", value, "createTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateTimeLessThanOrEqualTo(Date value) {
+            addCriterion("create_time <=", value, "createTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateTimeIn(List<Date> values) {
+            addCriterion("create_time in", values, "createTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateTimeNotIn(List<Date> values) {
+            addCriterion("create_time not in", values, "createTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateTimeBetween(Date value1, Date value2) {
+            addCriterion("create_time between", value1, value2, "createTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andCreateTimeNotBetween(Date value1, Date value2) {
+            addCriterion("create_time not between", value1, value2, "createTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByIsNull() {
+            addCriterion("update_by is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByIsNotNull() {
+            addCriterion("update_by is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByEqualTo(String value) {
+            addCriterion("update_by =", value, "updateBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByNotEqualTo(String value) {
+            addCriterion("update_by <>", value, "updateBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByGreaterThan(String value) {
+            addCriterion("update_by >", value, "updateBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByGreaterThanOrEqualTo(String value) {
+            addCriterion("update_by >=", value, "updateBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByLessThan(String value) {
+            addCriterion("update_by <", value, "updateBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByLessThanOrEqualTo(String value) {
+            addCriterion("update_by <=", value, "updateBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByLike(String value) {
+            addCriterion("update_by like", value, "updateBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByNotLike(String value) {
+            addCriterion("update_by not like", value, "updateBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByIn(List<String> values) {
+            addCriterion("update_by in", values, "updateBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByNotIn(List<String> values) {
+            addCriterion("update_by not in", values, "updateBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByBetween(String value1, String value2) {
+            addCriterion("update_by between", value1, value2, "updateBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateByNotBetween(String value1, String value2) {
+            addCriterion("update_by not between", value1, value2, "updateBy");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateTimeIsNull() {
+            addCriterion("update_time is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateTimeIsNotNull() {
+            addCriterion("update_time is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateTimeEqualTo(Date value) {
+            addCriterion("update_time =", value, "updateTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateTimeNotEqualTo(Date value) {
+            addCriterion("update_time <>", value, "updateTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateTimeGreaterThan(Date value) {
+            addCriterion("update_time >", value, "updateTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateTimeGreaterThanOrEqualTo(Date value) {
+            addCriterion("update_time >=", value, "updateTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateTimeLessThan(Date value) {
+            addCriterion("update_time <", value, "updateTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateTimeLessThanOrEqualTo(Date value) {
+            addCriterion("update_time <=", value, "updateTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateTimeIn(List<Date> values) {
+            addCriterion("update_time in", values, "updateTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateTimeNotIn(List<Date> values) {
+            addCriterion("update_time not in", values, "updateTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateTimeBetween(Date value1, Date value2) {
+            addCriterion("update_time between", value1, value2, "updateTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andUpdateTimeNotBetween(Date value1, Date value2) {
+            addCriterion("update_time not between", value1, value2, "updateTime");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelFlagIsNull() {
+            addCriterion("del_flag is null");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelFlagIsNotNull() {
+            addCriterion("del_flag is not null");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelFlagEqualTo(Byte value) {
+            addCriterion("del_flag =", value, "delFlag");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelFlagNotEqualTo(Byte value) {
+            addCriterion("del_flag <>", value, "delFlag");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelFlagGreaterThan(Byte value) {
+            addCriterion("del_flag >", value, "delFlag");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelFlagGreaterThanOrEqualTo(Byte value) {
+            addCriterion("del_flag >=", value, "delFlag");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelFlagLessThan(Byte value) {
+            addCriterion("del_flag <", value, "delFlag");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelFlagLessThanOrEqualTo(Byte value) {
+            addCriterion("del_flag <=", value, "delFlag");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelFlagIn(List<Byte> values) {
+            addCriterion("del_flag in", values, "delFlag");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelFlagNotIn(List<Byte> values) {
+            addCriterion("del_flag not in", values, "delFlag");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelFlagBetween(Byte value1, Byte value2) {
+            addCriterion("del_flag between", value1, value2, "delFlag");
+            return (Criteria) this;
+        }
+
+        public Criteria andDelFlagNotBetween(Byte value1, Byte value2) {
+            addCriterion("del_flag not between", value1, value2, "delFlag");
+            return (Criteria) this;
+        }
+    }
+
+    public static class Criteria extends GeneratedCriteria {
+
+        protected Criteria() {
+            super();
+        }
+    }
+
+    public static class Criterion {
+        private String condition;
+
+        private Object value;
+
+        private Object secondValue;
+
+        private boolean noValue;
+
+        private boolean singleValue;
+
+        private boolean betweenValue;
+
+        private boolean listValue;
+
+        private String typeHandler;
+
+        public String getCondition() {
+            return condition;
+        }
+
+        public Object getValue() {
+            return value;
+        }
+
+        public Object getSecondValue() {
+            return secondValue;
+        }
+
+        public boolean isNoValue() {
+            return noValue;
+        }
+
+        public boolean isSingleValue() {
+            return singleValue;
+        }
+
+        public boolean isBetweenValue() {
+            return betweenValue;
+        }
+
+        public boolean isListValue() {
+            return listValue;
+        }
+
+        public String getTypeHandler() {
+            return typeHandler;
+        }
+
+        protected Criterion(String condition) {
+            super();
+            this.condition = condition;
+            this.typeHandler = null;
+            this.noValue = true;
+        }
+
+        protected Criterion(String condition, Object value, String typeHandler) {
+            super();
+            this.condition = condition;
+            this.value = value;
+            this.typeHandler = typeHandler;
+            if (value instanceof List<?>) {
+                this.listValue = true;
+            } else {
+                this.singleValue = true;
+            }
+        }
+
+        protected Criterion(String condition, Object value) {
+            this(condition, value, null);
+        }
+
+        protected Criterion(String condition, Object value, Object secondValue, String typeHandler) {
+            super();
+            this.condition = condition;
+            this.value = value;
+            this.secondValue = secondValue;
+            this.typeHandler = typeHandler;
+            this.betweenValue = true;
+        }
+
+        protected Criterion(String condition, Object value, Object secondValue) {
+            this(condition, value, secondValue, null);
+        }
+    }
+}
\ No newline at end of file
diff --git a/research-system/src/main/java/com/research/system/domain/vo/GroupVO.java b/research-system/src/main/java/com/research/system/domain/vo/GroupVO.java
index 9d6915f8..61fb41dc 100644
--- a/research-system/src/main/java/com/research/system/domain/vo/GroupVO.java
+++ b/research-system/src/main/java/com/research/system/domain/vo/GroupVO.java
@@ -120,7 +120,7 @@ public class GroupVO {
         private String userName;
         private String nickName;
         @ApiModelProperty("入学时间")
-        private Date enrollTime;
+        private Date enrollmentTime;
         @ApiModelProperty("毕业时间")
         private Date graduationTime;
 
diff --git a/research-system/src/main/java/com/research/system/domain/vo/ResResearchIntegrityVo.java b/research-system/src/main/java/com/research/system/domain/vo/ResResearchIntegrityVo.java
index 2e270837..64478c7e 100644
--- a/research-system/src/main/java/com/research/system/domain/vo/ResResearchIntegrityVo.java
+++ b/research-system/src/main/java/com/research/system/domain/vo/ResResearchIntegrityVo.java
@@ -35,6 +35,7 @@ public class ResResearchIntegrityVo {
         private String signTime;
 
         private String tplDownloadUrl;
+        private String remark;
         private String createBy;
         private Date createTime;
         private String projOrgName;
diff --git a/research-system/src/main/java/com/research/system/domain/vo/SessionVo.java b/research-system/src/main/java/com/research/system/domain/vo/SessionVo.java
new file mode 100644
index 00000000..81950e4d
--- /dev/null
+++ b/research-system/src/main/java/com/research/system/domain/vo/SessionVo.java
@@ -0,0 +1,87 @@
+package com.research.system.domain.vo;
+
+import com.github.pagehelper.PageHelper;
+import com.github.pagehelper.PageInfo;
+import io.swagger.annotations.ApiModelProperty;
+import lombok.Data;
+
+import java.util.Date;
+import java.util.List;
+
+/**
+ * @Author zzc
+ * @Package com.research.system.domain.vo
+ * @Date 2025/11/23 17:06
+ * @description:
+ */
+public class SessionVo {
+
+    @Data
+    public static class TxlResult{
+        @ApiModelProperty("会话id")
+        private Long sessionId;
+        @ApiModelProperty("会话名称")
+        private String sessionName;
+        @ApiModelProperty("会话头像")
+        private String sessionAvatar;
+        @ApiModelProperty("会话类型")
+        private Byte sessionType;
+        @ApiModelProperty("最后一条消息")
+        private String lastMessage;
+        @ApiModelProperty("最后消息时间")
+        private Date lastMessageTime;
+
+        private Long senderId;
+    }
+
+    @Data
+    public static class MessageLogResult{
+
+        private SessionInfo sessionInfo;
+        private PageInfo<LogList> logList;
+        private List<MemberInfo> memberList;
+
+        @Data
+        public static class SessionInfo {
+            @ApiModelProperty("会话id")
+            private Long sessionId;
+            @ApiModelProperty("会话名称")
+            private String sessionName;
+            @ApiModelProperty("会话头像")
+            private String sessionAvatar;
+            @ApiModelProperty("会话类型")
+            private String sessionType;
+            @ApiModelProperty("会话创建时间")
+            private Date createTime;
+        }
+
+        @Data
+        public static class LogList{
+            @ApiModelProperty
+            private Long messageId;
+            @ApiModelProperty
+            private Long senderId;
+            @ApiModelProperty
+            private String content;
+            @ApiModelProperty
+            private Byte contentType;
+            @ApiModelProperty
+            private Date sendTime;
+            private Byte readStatus;
+        }
+
+        @Data
+        public static class MemberInfo{
+            private String userName;
+            private String avatar;
+            private String nickName;
+            private String phonenumber;
+            private Byte sex;
+            private Byte status;
+            private Long orgId;
+            private String orgName;
+        }
+
+    }
+
+}
diff --git a/research-system/src/main/java/com/research/system/persist/dao/SessionDao.java b/research-system/src/main/java/com/research/system/persist/dao/SessionDao.java
new file mode 100644
index 00000000..9df230c1
--- /dev/null
+++ b/research-system/src/main/java/com/research/system/persist/dao/SessionDao.java
@@ -0,0 +1,23 @@
+package com.research.system.persist.dao;
+
+import com.research.system.domain.dto.SessionDto;
+import com.research.system.domain.vo.SessionVo;
+
+import java.util.List;
+
+/**
+ * @Author zzc
+ * @Package com.research.system.persist.dao
+ * @Date 2025/11/24 10:05
+ * @description:
+ */
+public interface SessionDao {
+
+    List<SessionVo.TxlResult> queryTxl(SessionDto.Query dto);
+
+    SessionVo.MessageLogResult.SessionInfo querySessionInfo(SessionDto.SessionId dto);
+
+    List<SessionVo.MessageLogResult.LogList> queryLogList(SessionDto.SessionId dto);
+
+    List<SessionVo.MessageLogResult.MemberInfo> queryMemberList(SessionDto.SessionId dto);
+}
diff --git a/research-system/src/main/java/com/research/system/persist/mapper/ChatContactListMapper.java b/research-system/src/main/java/com/research/system/persist/mapper/ChatContactListMapper.java
new file mode 100644
index 00000000..01d1aa54
--- /dev/null
+++ b/research-system/src/main/java/com/research/system/persist/mapper/ChatContactListMapper.java
@@ -0,0 +1,20 @@
+package com.research.system.persist.mapper;
+
+import com.research.system.domain.po.ChatContactList;
+import com.research.system.domain.po.ChatContactListExample;
+import java.util.List;
+import org.apache.ibatis.annotations.Param;
+
+public interface ChatContactListMapper {
+    long countByExample(ChatContactListExample example);
+
+    int insert(ChatContactList record);
+
+    int insertSelective(ChatContactList record);
+
+    List<ChatContactList> selectByExample(ChatContactListExample example);
+
+    int updateByExampleSelective(@Param("record") ChatContactList record, @Param("example") ChatContactListExample example);
+
+    int updateByExample(@Param("record") ChatContactList record, @Param("example") ChatContactListExample example);
+}
\ No newline at end of file
diff --git a/research-system/src/main/java/com/research/system/persist/mapper/ChatMessageReadStatusMapper.java b/research-system/src/main/java/com/research/system/persist/mapper/ChatMessageReadStatusMapper.java
new file mode 100644
index 00000000..a7627ef9
--- /dev/null
+++ b/research-system/src/main/java/com/research/system/persist/mapper/ChatMessageReadStatusMapper.java
@@ -0,0 +1,28 @@
+package com.research.system.persist.mapper;
+
+import com.research.system.domain.po.ChatMessageReadStatus;
+import com.research.system.domain.po.ChatMessageReadStatusExample;
+import java.util.List;
+import org.apache.ibatis.annotations.Param;
+
+public interface ChatMessageReadStatusMapper {
+    long countByExample(ChatMessageReadStatusExample example);
+
+    int deleteByPrimaryKey(Long id);
+
+    int insert(ChatMessageReadStatus record);
+
+    int insertSelective(ChatMessageReadStatus record);
+
+    List<ChatMessageReadStatus> selectByExample(ChatMessageReadStatusExample example);
+
+    ChatMessageReadStatus selectByPrimaryKey(Long id);
+
+    int updateByExampleSelective(@Param("record") ChatMessageReadStatus record, @Param("example") ChatMessageReadStatusExample example);
+
+    int updateByExample(@Param("record") ChatMessageReadStatus record, @Param("example") ChatMessageReadStatusExample example);
+
+    int updateByPrimaryKeySelective(ChatMessageReadStatus record);
+
+    int updateByPrimaryKey(ChatMessageReadStatus record);
+}
\ No newline at end of file
diff --git a/research-system/src/main/java/com/research/system/persist/mapper/ChatSessionMembersMapper.java b/research-system/src/main/java/com/research/system/persist/mapper/ChatSessionMembersMapper.java
new file mode 100644
index 00000000..ce113d49
--- /dev/null
+++ b/research-system/src/main/java/com/research/system/persist/mapper/ChatSessionMembersMapper.java
@@ -0,0 +1,28 @@
+package com.research.system.persist.mapper;
+
+import com.research.system.domain.po.ChatSessionMembers;
+import com.research.system.domain.po.ChatSessionMembersExample;
+import java.util.List;
+import org.apache.ibatis.annotations.Param;
+
+public interface ChatSessionMembersMapper {
+    long countByExample(ChatSessionMembersExample example);
+
+    int deleteByPrimaryKey(Long id);
+
+    int insert(ChatSessionMembers record);
+
+    int insertSelective(ChatSessionMembers record);
+
+    List<ChatSessionMembers> selectByExample(ChatSessionMembersExample example);
+
+    ChatSessionMembers selectByPrimaryKey(Long id);
+
+    int updateByExampleSelective(@Param("record") ChatSessionMembers record, @Param("example") ChatSessionMembersExample example);
+
+    int updateByExample(@Param("record") ChatSessionMembers record, @Param("example") ChatSessionMembersExample example);
+
+    int updateByPrimaryKeySelective(ChatSessionMembers record);
+
+    int updateByPrimaryKey(ChatSessionMembers record);
+}
\ No newline at end of file
diff --git a/research-system/src/main/java/com/research/system/persist/mapper/ChatSessionMessagesMapper.java b/research-system/src/main/java/com/research/system/persist/mapper/ChatSessionMessagesMapper.java
new file mode 100644
index 00000000..9c297a89
--- /dev/null
+++ b/research-system/src/main/java/com/research/system/persist/mapper/ChatSessionMessagesMapper.java
@@ -0,0 +1,28 @@
+package com.research.system.persist.mapper;
+
+import com.research.system.domain.po.ChatSessionMessages;
+import com.research.system.domain.po.ChatSessionMessagesExample;
+import java.util.List;
+import org.apache.ibatis.annotations.Param;
+
+public interface ChatSessionMessagesMapper {
+    long countByExample(ChatSessionMessagesExample example);
+
+    int deleteByPrimaryKey(Long id);
+
+    int insert(ChatSessionMessages record);
+
+    int insertSelective(ChatSessionMessages record);
+
+    List<ChatSessionMessages> selectByExample(ChatSessionMessagesExample example);
+
+    ChatSessionMessages selectByPrimaryKey(Long id);
+
+    int updateByExampleSelective(@Param("record") ChatSessionMessages record, @Param("example") ChatSessionMessagesExample example);
+
+    int updateByExample(@Param("record") ChatSessionMessages record, @Param("example") ChatSessionMessagesExample example);
+
+    int updateByPrimaryKeySelective(ChatSessionMessages record);
+
+    int updateByPrimaryKey(ChatSessionMessages record);
+}
\ No newline at end of file
diff --git a/research-system/src/main/java/com/research/system/persist/mapper/ChatSessionsMapper.java b/research-system/src/main/java/com/research/system/persist/mapper/ChatSessionsMapper.java
new file mode 100644
index 00000000..e4787c0d
--- /dev/null
+++ b/research-system/src/main/java/com/research/system/persist/mapper/ChatSessionsMapper.java
@@ -0,0 +1,28 @@
+package com.research.system.persist.mapper;
+
+import com.research.system.domain.po.ChatSessions;
+import com.research.system.domain.po.ChatSessionsExample;
+import java.util.List;
+import org.apache.ibatis.annotations.Param;
+
+public interface ChatSessionsMapper {
+    long countByExample(ChatSessionsExample example);
+
+    int deleteByPrimaryKey(Long id);
+
+    int insert(ChatSessions record);
+
+    int insertSelective(ChatSessions record);
+
+    List<ChatSessions> selectByExample(ChatSessionsExample example);
+
+    ChatSessions selectByPrimaryKey(Long id);
+
+    int updateByExampleSelective(@Param("record") ChatSessions record, @Param("example") ChatSessionsExample example);
+
+    int updateByExample(@Param("record") ChatSessions record, @Param("example") ChatSessionsExample example);
+
+    int updateByPrimaryKeySelective(ChatSessions record);
+
+    int updateByPrimaryKey(ChatSessions record);
+}
\ No newline at end of file
diff --git a/research-system/src/main/java/com/research/system/service/SessionService.java b/research-system/src/main/java/com/research/system/service/SessionService.java
new file mode 100644
index 00000000..555f2b80
--- /dev/null
+++ b/research-system/src/main/java/com/research/system/service/SessionService.java
@@ -0,0 +1,29 @@
+package com.research.system.service;
+
+import com.research.common.core.domain.BaseDto;
+import com.research.system.domain.dto.SessionDto;
+import com.research.system.domain.vo.SessionVo;
+
+import java.util.List;
+
+/**
+ * @Author zzc
+ * @Package com.research.system.service
+ * @Date 2025/11/24 9:34
+ * @description:
+ */
+public interface SessionService {
+
+    List<SessionVo.TxlResult> queryTxl(SessionDto.Query dto);
+
+    SessionVo.MessageLogResult queryLog(BaseDto<SessionDto.SessionId> dto);
+
+    Integer send(SessionDto.SendMessage dto);
+
+    Long addSession(SessionDto.CreateSession dto);
+
+    Integer delSession(SessionDto.Delete dto);
+
+    Integer delLog(SessionDto.Delete dto);
+
+}
diff --git a/research-system/src/main/java/com/research/system/service/impl/KtsGroupServiceImpl.java b/research-system/src/main/java/com/research/system/service/impl/KtsGroupServiceImpl.java
index 9683b7e1..35cdf130 100644
--- a/research-system/src/main/java/com/research/system/service/impl/KtsGroupServiceImpl.java
+++ b/research-system/src/main/java/com/research/system/service/impl/KtsGroupServiceImpl.java
@@ -201,6 +201,7 @@ public class KtsGroupServiceImpl implements KtsGroupService {
         }
 
         KtsKtGroupMember ktsKtGroupMember = BeanUtil.copyProperties(dto, KtsKtGroupMember.class);
+        ktsKtGroupMember.setEnrollTime(dto.getEnrollmentTime());
         //是否传了用户ID  没传用户id且传了用户名 添加用户
         if (dto.getUserId() == null && StrUtil.isNotEmpty(dto.getUsername())) {
             //查询手机号是否已有用户
diff --git a/research-system/src/main/java/com/research/system/service/impl/SessionServiceImpl.java b/research-system/src/main/java/com/research/system/service/impl/SessionServiceImpl.java
new file mode 100644
index 00000000..b07ad479
--- /dev/null
+++ b/research-system/src/main/java/com/research/system/service/impl/SessionServiceImpl.java
@@ -0,0 +1,173 @@
+package com.research.system.service.impl;
+
+import cn.hutool.core.collection.CollUtil;
+import cn.hutool.core.util.IdUtil;
+import com.github.pagehelper.PageHelper;
+import com.github.pagehelper.PageInfo;
+import com.research.common.core.domain.BaseDto;
+import com.research.common.core.domain.entity.SysUser;
+import com.research.common.utils.SecurityUtils;
+import com.research.system.domain.dto.SessionDto;
+import com.research.system.domain.po.*;
+import com.research.system.domain.vo.SessionVo;
+import com.research.system.persist.dao.SessionDao;
+import com.research.system.persist.mapper.ChatMessageReadStatusMapper;
+import com.research.system.persist.mapper.ChatSessionMembersMapper;
+import com.research.system.persist.mapper.ChatSessionMessagesMapper;
+import com.research.system.persist.mapper.ChatSessionsMapper;
+import com.research.system.service.ISysUserService;
+import com.research.system.service.SessionService;
+import org.springframework.stereotype.Service;
+
+import javax.annotation.Resource;
+import java.util.List;
+import java.util.Objects;
+
+/**
+ * @Author zzc
+ * @Package com.research.system.service.impl
+ * @Date 2025/11/24 9:47
+ * @description:
+ */
+@Service
+public class SessionServiceImpl implements SessionService {
+
+    @Resource
+    private SessionDao sessionDao;
+    @Resource
+    private ChatSessionMessagesMapper chatSessionMessagesMapper;
+    @Resource
+    private ChatSessionsMapper chatSessionsMapper;
+    @Resource
+    private ChatSessionMembersMapper chatSessionMembersMapper;
+    @Resource
+    private ISysUserService sysUserService;
+    @Resource
+    private ChatMessageReadStatusMapper chatMessageReadStatusMapper;
+
+    @Override
+    public List<SessionVo.TxlResult> queryTxl(SessionDto.Query dto) {
+        List<SessionVo.TxlResult> txlResults = sessionDao.queryTxl(dto);
+        if (CollUtil.isNotEmpty(txlResults)) {
+            for (SessionVo.TxlResult txlResult : txlResults) {
+                if (txlResult.getSessionId() != null && txlResult.getSessionId() > 0) {
+                    continue;
+                }
+                //查询会话接收人
+                SessionDto.CreateSession createSession = new SessionDto.CreateSession();
+                createSession.setSessionName(txlResult.getSessionName());
+                createSession.setType(txlResult.getSessionType());
+                createSession.setMemberList(CollUtil.newArrayList(txlResult.getSenderId()));
+                Long addSession = addSession(createSession);
+                txlResult.setSessionId(addSession);
+            }
+        }
+        return txlResults;
+    }
+
+    @Override
+    public SessionVo.MessageLogResult queryLog(BaseDto<SessionDto.SessionId> dto) {
+        SessionVo.MessageLogResult messageLogResult = new SessionVo.MessageLogResult();
+        messageLogResult.setSessionInfo(sessionDao.querySessionInfo(dto.getParam()));
+        if (dto.getPageNum() > 0) {
+            PageHelper.startPage(dto.getPageNum(), dto.getPageSize());
+        }
+        messageLogResult.setLogList(new PageInfo<>(sessionDao.queryLogList(dto.getParam())));
+        messageLogResult.setMemberList(sessionDao.queryMemberList(dto.getParam()));
+        return messageLogResult;
+    }
+
+    @Override
+    public Integer send(SessionDto.SendMessage dto) {
+        ChatSessionMessages chatSessionMessages = new ChatSessionMessages();
+        chatSessionMessages.setId(IdUtil.getSnowflakeNextId());
+        chatSessionMessages.setSessionId(dto.getSessionId());
+        chatSessionMessages.setSenderId(SecurityUtils.getUserId());
+        chatSessionMessages.setContentType(dto.getContentType());
+        chatSessionMessages.setContent(dto.getContent());
+        chatSessionMessages.setReferencedMessageId(dto.getReferencedMessageId());
+        chatSessionMessages.setMentionedUsers(dto.getMentionedUsers());
+        chatSessionMessages.setCreateBy(SecurityUtils.getUsername());
+        chatSessionMessages.setCreateTime(new java.util.Date());
+        chatSessionMessagesMapper.insertSelective(chatSessionMessages);
+
+        //查询会话的人员
+        ChatSessionMembersExample chatSessionMembersExample = new ChatSessionMembersExample();
+        chatSessionMembersExample.createCriteria().andSessionIdEqualTo(dto.getSessionId()).andDelFlagEqualTo((byte) 0);
+        List<ChatSessionMembers> chatSessionMembers = chatSessionMembersMapper.selectByExample(chatSessionMembersExample);
+        if (CollUtil.isNotEmpty(chatSessionMembers)) {
+            for (ChatSessionMembers chatSessionMember : chatSessionMembers) {
+                ChatMessageReadStatus chatMessageReadStatus = new ChatMessageReadStatus();
+                chatMessageReadStatus.setId(IdUtil.getSnowflakeNextId());
+                chatMessageReadStatus.setSessionId(dto.getSessionId());
+                chatMessageReadStatus.setSessionMemberId(chatSessionMember.getSessionMemberId());
+                chatMessageReadStatus.setSessionMessageId(chatSessionMessages.getId());
+                if (Objects.equals(chatSessionMember.getSessionMemberId(), SecurityUtils.getUserId())) {
+                    chatMessageReadStatus.setReadStatus((byte) 1);
+                }else {
+                    chatMessageReadStatus.setReadStatus((byte) 0);
+                }
+                chatMessageReadStatus.setDelStatus((byte) 0);
+                chatMessageReadStatusMapper.insertSelective(chatMessageReadStatus);
+            }
+        }
+        return 1;
+    }
+
+    @Override
+    public Long addSession(SessionDto.CreateSession dto) {
+        ChatSessions chatSessions = new ChatSessions();
+        chatSessions.setSessionName(dto.getSessionName());
+        chatSessions.setSessionType(dto.getType());
+        chatSessions.setCreatedBy(SecurityUtils.getUserId());
+        chatSessions.setCreatedAt(new java.util.Date());
+        if (dto.getType() == 0) {
+            SysUser sysUser = sysUserService.selectUserById(dto.getMemberList().get(0));
+            if (sysUser != null) {
+                chatSessions.setAvatarUrl(sysUser.getAvatar());
+            }
+        }
+        chatSessions.setCreateBy(SecurityUtils.getUserId() + "");
+        chatSessions.setId(IdUtil.getSnowflakeNextId());
+        chatSessionsMapper.insertSelective(chatSessions);
+
+
+        for (Long aLong : dto.getMemberList()) {
+            SysUser sysUser = sysUserService.selectUserById(aLong);
+            if (sysUser == null) {
+                continue;
+            }
+
+            ChatSessionMembers chatSessionMembers = new ChatSessionMembers();
+            chatSessionMembers.setId(IdUtil.getSnowflakeNextId());
+            chatSessionMembers.setSessionId(chatSessions.getId());
+            chatSessionMembers.setSessionMemberId(aLong);
+            chatSessionMembers.setIsCreator(Objects.equals(aLong, SecurityUtils.getUserId()) ? (byte) 1 :(byte) 0);
+            chatSessionMembers.setIsAdmin(Objects.equals(aLong, SecurityUtils.getUserId()) ? (byte) 1 :(byte) 0);
+            chatSessionMembers.setSessionAlias("");
+            chatSessionMembers.setCreateBy(SecurityUtils.getUsername());
+            chatSessionMembers.setCreateTime(new java.util.Date());
+            chatSessionMembersMapper.insertSelective(chatSessionMembers);
+        }
+
+        return chatSessions.getId();
+    }
+
+    @Override
+    public Integer delSession(SessionDto.Delete dto) {
+        ChatSessionsExample chatSessionsExample = new ChatSessionsExample();
+        chatSessionsExample.createCriteria().andIdIn(dto.getIdList());
+        ChatSessions chatSessions = new ChatSessions();
+        chatSessions.setDelFlag((byte) 1);
+        return chatSessionsMapper.updateByExampleSelective(chatSessions, chatSessionsExample);
+    }
+
+    @Override
+    public Integer delLog(SessionDto.Delete dto) {
+        ChatSessionMessagesExample chatSessionMessagesExample = new ChatSessionMessagesExample();
+        chatSessionMessagesExample.createCriteria().andIdIn(dto.getIdList());
+        ChatSessionMessages chatSessionMessages = new ChatSessionMessages();
+        chatSessionMessages.setDelFlag((byte) 1);
+        return chatSessionMessagesMapper.updateByExampleSelective(chatSessionMessages, chatSessionMessagesExample);
+    }
+}
diff --git a/research-system/src/main/resources/mapper/dao/KtsGroupDao.xml b/research-system/src/main/resources/mapper/dao/KtsGroupDao.xml
index e75a2f71..d7ca0293 100644
--- a/research-system/src/main/resources/mapper/dao/KtsGroupDao.xml
+++ b/research-system/src/main/resources/mapper/dao/KtsGroupDao.xml
@@ -65,7 +65,7 @@
         o.org_name as projOrgName,
         u.user_name as userName,
         u.nick_name as nickName,
-        m.enroll_time as enrollTime,
+        m.enroll_time as enrollmentTime,
         m.graduation_time as graduationTime
         from
         kts_kt_group_member m
diff --git a/research-system/src/main/resources/mapper/dao/ResResearchIntegrityDao.xml b/research-system/src/main/resources/mapper/dao/ResResearchIntegrityDao.xml
index bfbce346..5cc6145b 100644
--- a/research-system/src/main/resources/mapper/dao/ResResearchIntegrityDao.xml
+++ b/research-system/src/main/resources/mapper/dao/ResResearchIntegrityDao.xml
@@ -17,6 +17,7 @@
             i.tpl_download_url as tplDownloadUrl,
             i.create_by as createBy,
             i.create_time as createTime,
+            i.remark,
             o.org_name as projOrgName,
             g.kt_group_name as ktGroupName
         from
diff --git a/research-system/src/main/resources/mapper/dao/SessionDao.xml b/research-system/src/main/resources/mapper/dao/SessionDao.xml
new file mode 100644
index 00000000..41c5dfd9
--- /dev/null
+++ b/research-system/src/main/resources/mapper/dao/SessionDao.xml
@@ -0,0 +1,94 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+<mapper namespace="com.research.system.persist.dao.SessionDao">
+
+    <select id="queryTxl" resultType="com.research.system.domain.vo.SessionVo$TxlResult">
+
+select * from
+
+        (
+        SELECT
+            DISTINCT s.id as sessionId,
+                     s.session_name as sessionName,
+                     s.session_type as sessionType,
+                     s.avatar_url as sessionAvatar,
+                     m.content_type as contentType,
+                     m.content as  lastMessage,
+                     m.create_time as lastMessageTime,
+                     m.sender_id as senderId,
+                     s.create_time as createTime
+        FROM
+            chat_sessions s
+                LEFT JOIN chat_session_messages m on s.id = m.session_id
+        where s.created_by = #{userId}
+        <if test="nickname != null and nickname != ''">
+            and s.session_name like concat('%',#{nickname},'%')
+        </if>
+        GROUP BY s.id
+        UNION ALL
+
+        SELECT
+            '',
+            l.nick_name as sessionName,
+            0,
+            l.avatar as sessionAvatar,
+            '',
+            '',
+            null,
+            l.user_id as senderId,
+        null
+        FROM
+            chat_contact_list l
+                LEFT JOIN chat_session_members sm on sm.session_member_id = l.user_id  and sm.is_creator = 1
+                LEFT JOIN chat_sessions cs on sm.session_id = cs.id and session_type = 0
+        <where>
+        <if test="nickname != null and nickname != ''">
+            and l.nick_name like concat('%',#{nickname},'%')
+        </if>
+        </where>
+        )a
+        order by lastMessageTime desc, createTime desc
+
+    </select>
+
+    <select id="querySessionInfo" resultType="com.research.system.domain.vo.SessionVo$MessageLogResult$SessionInfo">
+
+        SELECT
+            s.id AS sessionId,
+            s.session_name as sessionName,
+            s.avatar_url AS sessionAvatar,
+            s.session_type as  sessionType,
+            s.created_at AS createTime
+        FROM chat_sessions s
+        WHERE s.id = #{sessionId}
+    </select>
+
+    <select id="queryLogList" resultType="com.research.system.domain.vo.SessionVo$MessageLogResult$LogList">
+        SELECT
+            m.id AS messageId,
+            m.sender_id AS senderId,
+            m.content,
+            m.content_type as contentType,
+            m.create_time AS sendTime,
+            s.read_status as readStatus
+        FROM chat_session_messages m
+        left join chat_message_read_status s on m.session_id = s.session_id and m.id = s.session_message_id and s.del_status = 0
+        WHERE m.session_id = #{sessionId}
+        ORDER BY m.create_time DESC
+    </select>
+
+    <select id="queryMemberList" resultType="com.research.system.domain.vo.SessionVo$MessageLogResult$MemberInfo">
+        SELECT
+            c.user_name,
+            c.avatar,
+            c.nick_name,
+            c.phonenumber,
+            c.sex,
+            c.status,
+            c.org_id,
+            c.org_name
+        FROM chat_session_members sm
+        INNER JOIN chat_contact_list c ON sm.session_member_id = c.user_id
+        WHERE sm.session_id = #{sessionId}
+    </select>
+</mapper>
diff --git a/research-system/src/main/resources/mapper/system/ChatContactListMapper.xml b/research-system/src/main/resources/mapper/system/ChatContactListMapper.xml
new file mode 100644
index 00000000..7cdac839
--- /dev/null
+++ b/research-system/src/main/resources/mapper/system/ChatContactListMapper.xml
@@ -0,0 +1,215 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+<mapper namespace="com.research.system.persist.mapper.ChatContactListMapper">
+  <resultMap id="BaseResultMap" type="com.research.system.domain.po.ChatContactList">
+    <result column="user_id" jdbcType="BIGINT" property="userId" />
+    <result column="user_name" jdbcType="VARCHAR" property="userName" />
+    <result column="nick_name" jdbcType="VARCHAR" property="nickName" />
+    <result column="avatar" jdbcType="VARCHAR" property="avatar" />
+    <result column="phonenumber" jdbcType="VARCHAR" property="phonenumber" />
+    <result column="sex" jdbcType="CHAR" property="sex" />
+    <result column="status" jdbcType="CHAR" property="status" />
+    <result column="org_id" jdbcType="BIGINT" property="orgId" />
+    <result column="org_name" jdbcType="VARCHAR" property="orgName" />
+  </resultMap>
+  <sql id="Example_Where_Clause">
+    <where>
+      <foreach collection="oredCriteria" item="criteria" separator="or">
+        <if test="criteria.valid">
+          <trim prefix="(" prefixOverrides="and" suffix=")">
+            <foreach collection="criteria.criteria" item="criterion">
+              <choose>
+                <when test="criterion.noValue">
+                  and ${criterion.condition}
+                </when>
+                <when test="criterion.singleValue">
+                  and ${criterion.condition} #{criterion.value}
+                </when>
+                <when test="criterion.betweenValue">
+                  and ${criterion.condition} #{criterion.value} and #{criterion.secondValue}
+                </when>
+                <when test="criterion.listValue">
+                  and ${criterion.condition}
+                  <foreach close=")" collection="criterion.value" item="listItem" open="(" separator=",">
+                    #{listItem}
+                  </foreach>
+                </when>
+              </choose>
+            </foreach>
+          </trim>
+        </if>
+      </foreach>
+    </where>
+  </sql>
+  <sql id="Update_By_Example_Where_Clause">
+    <where>
+      <foreach collection="example.oredCriteria" item="criteria" separator="or">
+        <if test="criteria.valid">
+          <trim prefix="(" prefixOverrides="and" suffix=")">
+            <foreach collection="criteria.criteria" item="criterion">
+              <choose>
+                <when test="criterion.noValue">
+                  and ${criterion.condition}
+                </when>
+                <when test="criterion.singleValue">
+                  and ${criterion.condition} #{criterion.value}
+                </when>
+                <when test="criterion.betweenValue">
+                  and ${criterion.condition} #{criterion.value} and #{criterion.secondValue}
+                </when>
+                <when test="criterion.listValue">
+                  and ${criterion.condition}
+                  <foreach close=")" collection="criterion.value" item="listItem" open="(" separator=",">
+                    #{listItem}
+                  </foreach>
+                </when>
+              </choose>
+            </foreach>
+          </trim>
+        </if>
+      </foreach>
+    </where>
+  </sql>
+  <sql id="Base_Column_List">
+    user_id, user_name, nick_name, avatar, phonenumber, sex, status, org_id, org_name
+  </sql>
+  <select id="selectByExample" parameterType="com.research.system.domain.po.ChatContactListExample" resultMap="BaseResultMap">
+    select
+    <if test="distinct">
+      distinct
+    </if>
+    <include refid="Base_Column_List" />
+    from chat_contact_list
+    <if test="_parameter != null">
+      <include refid="Example_Where_Clause" />
+    </if>
+    <if test="orderByClause != null">
+      order by ${orderByClause}
+    </if>
+  </select>
+  <insert id="insert" parameterType="com.research.system.domain.po.ChatContactList">
+    insert into chat_contact_list (user_id, user_name, nick_name, 
+      avatar, phonenumber, sex, 
+      status, org_id, org_name)
+    values (#{userId,jdbcType=BIGINT}, #{userName,jdbcType=VARCHAR}, #{nickName,jdbcType=VARCHAR}, 
+      #{avatar,jdbcType=VARCHAR}, #{phonenumber,jdbcType=VARCHAR}, #{sex,jdbcType=CHAR}, 
+      #{status,jdbcType=CHAR}, #{orgId,jdbcType=BIGINT}, #{orgName,jdbcType=VARCHAR})
+  </insert>
+  <insert id="insertSelective" parameterType="com.research.system.domain.po.ChatContactList">
+    insert into chat_contact_list
+    <trim prefix="(" suffix=")" suffixOverrides=",">
+      <if test="userId != null">
+        user_id,
+      </if>
+      <if test="userName != null">
+        user_name,
+      </if>
+      <if test="nickName != null">
+        nick_name,
+      </if>
+      <if test="avatar != null">
+        avatar,
+      </if>
+      <if test="phonenumber != null">
+        phonenumber,
+      </if>
+      <if test="sex != null">
+        sex,
+      </if>
+      <if test="status != null">
+        status,
+      </if>
+      <if test="orgId != null">
+        org_id,
+      </if>
+      <if test="orgName != null">
+        org_name,
+      </if>
+    </trim>
+    <trim prefix="values (" suffix=")" suffixOverrides=",">
+      <if test="userId != null">
+        #{userId,jdbcType=BIGINT},
+      </if>
+      <if test="userName != null">
+        #{userName,jdbcType=VARCHAR},
+      </if>
+      <if test="nickName != null">
+        #{nickName,jdbcType=VARCHAR},
+      </if>
+      <if test="avatar != null">
+        #{avatar,jdbcType=VARCHAR},
+      </if>
+      <if test="phonenumber != null">
+        #{phonenumber,jdbcType=VARCHAR},
+      </if>
+      <if test="sex != null">
+        #{sex,jdbcType=CHAR},
+      </if>
+      <if test="status != null">
+        #{status,jdbcType=CHAR},
+      </if>
+      <if test="orgId != null">
+        #{orgId,jdbcType=BIGINT},
+      </if>
+      <if test="orgName != null">
+        #{orgName,jdbcType=VARCHAR},
+      </if>
+    </trim>
+  </insert>
+  <select id="countByExample" parameterType="com.research.system.domain.po.ChatContactListExample" resultType="java.lang.Long">
+    select count(*) from chat_contact_list
+    <if test="_parameter != null">
+      <include refid="Example_Where_Clause" />
+    </if>
+  </select>
+  <update id="updateByExampleSelective" parameterType="map">
+    update chat_contact_list
+    <set>
+      <if test="record.userId != null">
+        user_id = #{record.userId,jdbcType=BIGINT},
+      </if>
+      <if test="record.userName != null">
+        user_name = #{record.userName,jdbcType=VARCHAR},
+      </if>
+      <if test="record.nickName != null">
+        nick_name = #{record.nickName,jdbcType=VARCHAR},
+      </if>
+      <if test="record.avatar != null">
+        avatar = #{record.avatar,jdbcType=VARCHAR},
+      </if>
+      <if test="record.phonenumber != null">
+        phonenumber = #{record.phonenumber,jdbcType=VARCHAR},
+      </if>
+      <if test="record.sex != null">
+        sex = #{record.sex,jdbcType=CHAR},
+      </if>
+      <if test="record.status != null">
+        status = #{record.status,jdbcType=CHAR},
+      </if>
+      <if test="record.orgId != null">
+        org_id = #{record.orgId,jdbcType=BIGINT},
+      </if>
+      <if test="record.orgName != null">
+        org_name = #{record.orgName,jdbcType=VARCHAR},
+      </if>
+    </set>
+    <if test="_parameter != null">
+      <include refid="Update_By_Example_Where_Clause" />
+    </if>
+  </update>
+  <update id="updateByExample" parameterType="map">
+    update chat_contact_list
+    set user_id = #{record.userId,jdbcType=BIGINT},
+      user_name = #{record.userName,jdbcType=VARCHAR},
+      nick_name = #{record.nickName,jdbcType=VARCHAR},
+      avatar = #{record.avatar,jdbcType=VARCHAR},
+      phonenumber = #{record.phonenumber,jdbcType=VARCHAR},
+      sex = #{record.sex,jdbcType=CHAR},
+      status = #{record.status,jdbcType=CHAR},
+      org_id = #{record.orgId,jdbcType=BIGINT},
+      org_name = #{record.orgName,jdbcType=VARCHAR}
+    <if test="_parameter != null">
+      <include refid="Update_By_Example_Where_Clause" />
+    </if>
+  </update>
+</mapper>
\ No newline at end of file
diff --git a/research-system/src/main/resources/mapper/system/ChatMessageReadStatusMapper.xml b/research-system/src/main/resources/mapper/system/ChatMessageReadStatusMapper.xml
new file mode 100644
index 00000000..d84eb5e0
--- /dev/null
+++ b/research-system/src/main/resources/mapper/system/ChatMessageReadStatusMapper.xml
@@ -0,0 +1,300 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+<mapper namespace="com.research.system.persist.mapper.ChatMessageReadStatusMapper">
+  <resultMap id="BaseResultMap" type="com.research.system.domain.po.ChatMessageReadStatus">
+    <id column="id" jdbcType="BIGINT" property="id" />
+    <result column="session_id" jdbcType="BIGINT" property="sessionId" />
+    <result column="session_message_id" jdbcType="BIGINT" property="sessionMessageId" />
+    <result column="session_member_id" jdbcType="BIGINT" property="sessionMemberId" />
+    <result column="read_status" jdbcType="TINYINT" property="readStatus" />
+    <result column="del_status" jdbcType="TINYINT" property="delStatus" />
+    <result column="create_by" jdbcType="VARCHAR" property="createBy" />
+    <result column="create_time" jdbcType="TIMESTAMP" property="createTime" />
+    <result column="update_by" jdbcType="VARCHAR" property="updateBy" />
+    <result column="update_time" jdbcType="TIMESTAMP" property="updateTime" />
+    <result column="del_flag" jdbcType="TINYINT" property="delFlag" />
+  </resultMap>
+  <sql id="Example_Where_Clause">
+    <where>
+      <foreach collection="oredCriteria" item="criteria" separator="or">
+        <if test="criteria.valid">
+          <trim prefix="(" prefixOverrides="and" suffix=")">
+            <foreach collection="criteria.criteria" item="criterion">
+              <choose>
+                <when test="criterion.noValue">
+                  and ${criterion.condition}
+                </when>
+                <when test="criterion.singleValue">
+                  and ${criterion.condition} #{criterion.value}
+                </when>
+                <when test="criterion.betweenValue">
+                  and ${criterion.condition} #{criterion.value} and #{criterion.secondValue}
+                </when>
+                <when test="criterion.listValue">
+                  and ${criterion.condition}
+                  <foreach close=")" collection="criterion.value" item="listItem" open="(" separator=",">
+                    #{listItem}
+                  </foreach>
+                </when>
+              </choose>
+            </foreach>
+          </trim>
+        </if>
+      </foreach>
+    </where>
+  </sql>
+  <sql id="Update_By_Example_Where_Clause">
+    <where>
+      <foreach collection="example.oredCriteria" item="criteria" separator="or">
+        <if test="criteria.valid">
+          <trim prefix="(" prefixOverrides="and" suffix=")">
+            <foreach collection="criteria.criteria" item="criterion">
+              <choose>
+                <when test="criterion.noValue">
+                  and ${criterion.condition}
+                </when>
+                <when test="criterion.singleValue">
+                  and ${criterion.condition} #{criterion.value}
+                </when>
+                <when test="criterion.betweenValue">
+                  and ${criterion.condition} #{criterion.value} and #{criterion.secondValue}
+                </when>
+                <when test="criterion.listValue">
+                  and ${criterion.condition}
+                  <foreach close=")" collection="criterion.value" item="listItem" open="(" separator=",">
+                    #{listItem}
+                  </foreach>
+                </when>
+              </choose>
+            </foreach>
+          </trim>
+        </if>
+      </foreach>
+    </where>
+  </sql>
+  <sql id="Base_Column_List">
+    id, session_id, session_message_id, session_member_id, read_status, del_status, create_by, 
+    create_time, update_by, update_time, del_flag
+  </sql>
+  <select id="selectByExample" parameterType="com.research.system.domain.po.ChatMessageReadStatusExample" resultMap="BaseResultMap">
+    select
+    <if test="distinct">
+      distinct
+    </if>
+    <include refid="Base_Column_List" />
+    from chat_message_read_status
+    <if test="_parameter != null">
+      <include refid="Example_Where_Clause" />
+    </if>
+    <if test="orderByClause != null">
+      order by ${orderByClause}
+    </if>
+  </select>
+  <select id="selectByPrimaryKey" parameterType="java.lang.Long" resultMap="BaseResultMap">
+    select 
+    <include refid="Base_Column_List" />
+    from chat_message_read_status
+    where id = #{id,jdbcType=BIGINT}
+  </select>
+  <delete id="deleteByPrimaryKey" parameterType="java.lang.Long">
+    delete from chat_message_read_status
+    where id = #{id,jdbcType=BIGINT}
+  </delete>
+  <insert id="insert" parameterType="com.research.system.domain.po.ChatMessageReadStatus">
+    insert into chat_message_read_status (id, session_id, session_message_id, 
+      session_member_id, read_status, del_status, 
+      create_by, create_time, update_by, 
+      update_time, del_flag)
+    values (#{id,jdbcType=BIGINT}, #{sessionId,jdbcType=BIGINT}, #{sessionMessageId,jdbcType=BIGINT}, 
+      #{sessionMemberId,jdbcType=BIGINT}, #{readStatus,jdbcType=TINYINT}, #{delStatus,jdbcType=TINYINT}, 
+      #{createBy,jdbcType=VARCHAR}, #{createTime,jdbcType=TIMESTAMP}, #{updateBy,jdbcType=VARCHAR}, 
+      #{updateTime,jdbcType=TIMESTAMP}, #{delFlag,jdbcType=TINYINT})
+  </insert>
+  <insert id="insertSelective" parameterType="com.research.system.domain.po.ChatMessageReadStatus">
+    insert into chat_message_read_status
+    <trim prefix="(" suffix=")" suffixOverrides=",">
+      <if test="id != null">
+        id,
+      </if>
+      <if test="sessionId != null">
+        session_id,
+      </if>
+      <if test="sessionMessageId != null">
+        session_message_id,
+      </if>
+      <if test="sessionMemberId != null">
+        session_member_id,
+      </if>
+      <if test="readStatus != null">
+        read_status,
+      </if>
+      <if test="delStatus != null">
+        del_status,
+      </if>
+      <if test="createBy != null">
+        create_by,
+      </if>
+      <if test="createTime != null">
+        create_time,
+      </if>
+      <if test="updateBy != null">
+        update_by,
+      </if>
+      <if test="updateTime != null">
+        update_time,
+      </if>
+      <if test="delFlag != null">
+        del_flag,
+      </if>
+    </trim>
+    <trim prefix="values (" suffix=")" suffixOverrides=",">
+      <if test="id != null">
+        #{id,jdbcType=BIGINT},
+      </if>
+      <if test="sessionId != null">
+        #{sessionId,jdbcType=BIGINT},
+      </if>
+      <if test="sessionMessageId != null">
+        #{sessionMessageId,jdbcType=BIGINT},
+      </if>
+      <if test="sessionMemberId != null">
+        #{sessionMemberId,jdbcType=BIGINT},
+      </if>
+      <if test="readStatus != null">
+        #{readStatus,jdbcType=TINYINT},
+      </if>
+      <if test="delStatus != null">
+        #{delStatus,jdbcType=TINYINT},
+      </if>
+      <if test="createBy != null">
+        #{createBy,jdbcType=VARCHAR},
+      </if>
+      <if test="createTime != null">
+        #{createTime,jdbcType=TIMESTAMP},
+      </if>
+      <if test="updateBy != null">
+        #{updateBy,jdbcType=VARCHAR},
+      </if>
+      <if test="updateTime != null">
+        #{updateTime,jdbcType=TIMESTAMP},
+      </if>
+      <if test="delFlag != null">
+        #{delFlag,jdbcType=TINYINT},
+      </if>
+    </trim>
+  </insert>
+  <select id="countByExample" parameterType="com.research.system.domain.po.ChatMessageReadStatusExample" resultType="java.lang.Long">
+    select count(*) from chat_message_read_status
+    <if test="_parameter != null">
+      <include refid="Example_Where_Clause" />
+    </if>
+  </select>
+  <update id="updateByExampleSelective" parameterType="map">
+    update chat_message_read_status
+    <set>
+      <if test="record.id != null">
+        id = #{record.id,jdbcType=BIGINT},
+      </if>
+      <if test="record.sessionId != null">
+        session_id = #{record.sessionId,jdbcType=BIGINT},
+      </if>
+      <if test="record.sessionMessageId != null">
+        session_message_id = #{record.sessionMessageId,jdbcType=BIGINT},
+      </if>
+      <if test="record.sessionMemberId != null">
+        session_member_id = #{record.sessionMemberId,jdbcType=BIGINT},
+      </if>
+      <if test="record.readStatus != null">
+        read_status = #{record.readStatus,jdbcType=TINYINT},
+      </if>
+      <if test="record.delStatus != null">
+        del_status = #{record.delStatus,jdbcType=TINYINT},
+      </if>
+      <if test="record.createBy != null">
+        create_by = #{record.createBy,jdbcType=VARCHAR},
+      </if>
+      <if test="record.createTime != null">
+        create_time = #{record.createTime,jdbcType=TIMESTAMP},
+      </if>
+      <if test="record.updateBy != null">
+        update_by = #{record.updateBy,jdbcType=VARCHAR},
+      </if>
+      <if test="record.updateTime != null">
+        update_time = #{record.updateTime,jdbcType=TIMESTAMP},
+      </if>
+      <if test="record.delFlag != null">
+        del_flag = #{record.delFlag,jdbcType=TINYINT},
+      </if>
+    </set>
+    <if test="_parameter != null">
+      <include refid="Update_By_Example_Where_Clause" />
+    </if>
+  </update>
+  <update id="updateByExample" parameterType="map">
+    update chat_message_read_status
+    set id = #{record.id,jdbcType=BIGINT},
+      session_id = #{record.sessionId,jdbcType=BIGINT},
+      session_message_id = #{record.sessionMessageId,jdbcType=BIGINT},
+      session_member_id = #{record.sessionMemberId,jdbcType=BIGINT},
+      read_status = #{record.readStatus,jdbcType=TINYINT},
+      del_status = #{record.delStatus,jdbcType=TINYINT},
+      create_by = #{record.createBy,jdbcType=VARCHAR},
+      create_time = #{record.createTime,jdbcType=TIMESTAMP},
+      update_by = #{record.updateBy,jdbcType=VARCHAR},
+      update_time = #{record.updateTime,jdbcType=TIMESTAMP},
+      del_flag = #{record.delFlag,jdbcType=TINYINT}
+    <if test="_parameter != null">
+      <include refid="Update_By_Example_Where_Clause" />
+    </if>
+  </update>
+  <update id="updateByPrimaryKeySelective" parameterType="com.research.system.domain.po.ChatMessageReadStatus">
+    update chat_message_read_status
+    <set>
+      <if test="sessionId != null">
+        session_id = #{sessionId,jdbcType=BIGINT},
+      </if>
+      <if test="sessionMessageId != null">
+        session_message_id = #{sessionMessageId,jdbcType=BIGINT},
+      </if>
+      <if test="sessionMemberId != null">
+        session_member_id = #{sessionMemberId,jdbcType=BIGINT},
+      </if>
+      <if test="readStatus != null">
+        read_status = #{readStatus,jdbcType=TINYINT},
+      </if>
+      <if test="delStatus != null">
+        del_status = #{delStatus,jdbcType=TINYINT},
+      </if>
+      <if test="createBy != null">
+        create_by = #{createBy,jdbcType=VARCHAR},
+      </if>
+      <if test="createTime != null">
+        create_time = #{createTime,jdbcType=TIMESTAMP},
+      </if>
+      <if test="updateBy != null">
+        update_by = #{updateBy,jdbcType=VARCHAR},
+      </if>
+      <if test="updateTime != null">
+        update_time = #{updateTime,jdbcType=TIMESTAMP},
+      </if>
+      <if test="delFlag != null">
+        del_flag = #{delFlag,jdbcType=TINYINT},
+      </if>
+    </set>
+    where id = #{id,jdbcType=BIGINT}
+  </update>
+  <update id="updateByPrimaryKey" parameterType="com.research.system.domain.po.ChatMessageReadStatus">
+    update chat_message_read_status
+    set session_id = #{sessionId,jdbcType=BIGINT},
+      session_message_id = #{sessionMessageId,jdbcType=BIGINT},
+      session_member_id = #{sessionMemberId,jdbcType=BIGINT},
+      read_status = #{readStatus,jdbcType=TINYINT},
+      del_status = #{delStatus,jdbcType=TINYINT},
+      create_by = #{createBy,jdbcType=VARCHAR},
+      create_time = #{createTime,jdbcType=TIMESTAMP},
+      update_by = #{updateBy,jdbcType=VARCHAR},
+      update_time = #{updateTime,jdbcType=TIMESTAMP},
+      del_flag = #{delFlag,jdbcType=TINYINT}
+    where id = #{id,jdbcType=BIGINT}
+  </update>
+</mapper>
\ No newline at end of file
diff --git a/research-system/src/main/resources/mapper/system/ChatSessionMembersMapper.xml b/research-system/src/main/resources/mapper/system/ChatSessionMembersMapper.xml
new file mode 100644
index 00000000..c1b76b70
--- /dev/null
+++ b/research-system/src/main/resources/mapper/system/ChatSessionMembersMapper.xml
@@ -0,0 +1,300 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+<mapper namespace="com.research.system.persist.mapper.ChatSessionMembersMapper">
+  <resultMap id="BaseResultMap" type="com.research.system.domain.po.ChatSessionMembers">
+    <id column="id" jdbcType="BIGINT" property="id" />
+    <result column="session_id" jdbcType="BIGINT" property="sessionId" />
+    <result column="session_member_id" jdbcType="BIGINT" property="sessionMemberId" />
+    <result column="is_creator" jdbcType="TINYINT" property="isCreator" />
+    <result column="is_admin" jdbcType="TINYINT" property="isAdmin" />
+    <result column="session_alias" jdbcType="VARCHAR" property="sessionAlias" />
+    <result column="create_by" jdbcType="VARCHAR" property="createBy" />
+    <result column="create_time" jdbcType="TIMESTAMP" property="createTime" />
+    <result column="update_by" jdbcType="VARCHAR" property="updateBy" />
+    <result column="update_time" jdbcType="TIMESTAMP" property="updateTime" />
+    <result column="del_flag" jdbcType="TINYINT" property="delFlag" />
+  </resultMap>
+  <sql id="Example_Where_Clause">
+    <where>
+      <foreach collection="oredCriteria" item="criteria" separator="or">
+        <if test="criteria.valid">
+          <trim prefix="(" prefixOverrides="and" suffix=")">
+            <foreach collection="criteria.criteria" item="criterion">
+              <choose>
+                <when test="criterion.noValue">
+                  and ${criterion.condition}
+                </when>
+                <when test="criterion.singleValue">
+                  and ${criterion.condition} #{criterion.value}
+                </when>
+                <when test="criterion.betweenValue">
+                  and ${criterion.condition} #{criterion.value} and #{criterion.secondValue}
+                </when>
+                <when test="criterion.listValue">
+                  and ${criterion.condition}
+                  <foreach close=")" collection="criterion.value" item="listItem" open="(" separator=",">
+                    #{listItem}
+                  </foreach>
+                </when>
+              </choose>
+            </foreach>
+          </trim>
+        </if>
+      </foreach>
+    </where>
+  </sql>
+  <sql id="Update_By_Example_Where_Clause">
+    <where>
+      <foreach collection="example.oredCriteria" item="criteria" separator="or">
+        <if test="criteria.valid">
+          <trim prefix="(" prefixOverrides="and" suffix=")">
+            <foreach collection="criteria.criteria" item="criterion">
+              <choose>
+                <when test="criterion.noValue">
+                  and ${criterion.condition}
+                </when>
+                <when test="criterion.singleValue">
+                  and ${criterion.condition} #{criterion.value}
+                </when>
+                <when test="criterion.betweenValue">
+                  and ${criterion.condition} #{criterion.value} and #{criterion.secondValue}
+                </when>
+                <when test="criterion.listValue">
+                  and ${criterion.condition}
+                  <foreach close=")" collection="criterion.value" item="listItem" open="(" separator=",">
+                    #{listItem}
+                  </foreach>
+                </when>
+              </choose>
+            </foreach>
+          </trim>
+        </if>
+      </foreach>
+    </where>
+  </sql>
+  <sql id="Base_Column_List">
+    id, session_id, session_member_id, is_creator, is_admin, session_alias, create_by, 
+    create_time, update_by, update_time, del_flag
+  </sql>
+  <select id="selectByExample" parameterType="com.research.system.domain.po.ChatSessionMembersExample" resultMap="BaseResultMap">
+    select
+    <if test="distinct">
+      distinct
+    </if>
+    <include refid="Base_Column_List" />
+    from chat_session_members
+    <if test="_parameter != null">
+      <include refid="Example_Where_Clause" />
+    </if>
+    <if test="orderByClause != null">
+      order by ${orderByClause}
+    </if>
+  </select>
+  <select id="selectByPrimaryKey" parameterType="java.lang.Long" resultMap="BaseResultMap">
+    select 
+    <include refid="Base_Column_List" />
+    from chat_session_members
+    where id = #{id,jdbcType=BIGINT}
+  </select>
+  <delete id="deleteByPrimaryKey" parameterType="java.lang.Long">
+    delete from chat_session_members
+    where id = #{id,jdbcType=BIGINT}
+  </delete>
+  <insert id="insert" parameterType="com.research.system.domain.po.ChatSessionMembers">
+    insert into chat_session_members (id, session_id, session_member_id, 
+      is_creator, is_admin, session_alias, 
+      create_by, create_time, update_by, 
+      update_time, del_flag)
+    values (#{id,jdbcType=BIGINT}, #{sessionId,jdbcType=BIGINT}, #{sessionMemberId,jdbcType=BIGINT}, 
+      #{isCreator,jdbcType=TINYINT}, #{isAdmin,jdbcType=TINYINT}, #{sessionAlias,jdbcType=VARCHAR}, 
+      #{createBy,jdbcType=VARCHAR}, #{createTime,jdbcType=TIMESTAMP}, #{updateBy,jdbcType=VARCHAR}, 
+      #{updateTime,jdbcType=TIMESTAMP}, #{delFlag,jdbcType=TINYINT})
+  </insert>
+  <insert id="insertSelective" parameterType="com.research.system.domain.po.ChatSessionMembers">
+    insert into chat_session_members
+    <trim prefix="(" suffix=")" suffixOverrides=",">
+      <if test="id != null">
+        id,
+      </if>
+      <if test="sessionId != null">
+        session_id,
+      </if>
+      <if test="sessionMemberId != null">
+        session_member_id,
+      </if>
+      <if test="isCreator != null">
+        is_creator,
+      </if>
+      <if test="isAdmin != null">
+        is_admin,
+      </if>
+      <if test="sessionAlias != null">
+        session_alias,
+      </if>
+      <if test="createBy != null">
+        create_by,
+      </if>
+      <if test="createTime != null">
+        create_time,
+      </if>
+      <if test="updateBy != null">
+        update_by,
+      </if>
+      <if test="updateTime != null">
+        update_time,
+      </if>
+      <if test="delFlag != null">
+        del_flag,
+      </if>
+    </trim>
+    <trim prefix="values (" suffix=")" suffixOverrides=",">
+      <if test="id != null">
+        #{id,jdbcType=BIGINT},
+      </if>
+      <if test="sessionId != null">
+        #{sessionId,jdbcType=BIGINT},
+      </if>
+      <if test="sessionMemberId != null">
+        #{sessionMemberId,jdbcType=BIGINT},
+      </if>
+      <if test="isCreator != null">
+        #{isCreator,jdbcType=TINYINT},
+      </if>
+      <if test="isAdmin != null">
+        #{isAdmin,jdbcType=TINYINT},
+      </if>
+      <if test="sessionAlias != null">
+        #{sessionAlias,jdbcType=VARCHAR},
+      </if>
+      <if test="createBy != null">
+        #{createBy,jdbcType=VARCHAR},
+      </if>
+      <if test="createTime != null">
+        #{createTime,jdbcType=TIMESTAMP},
+      </if>
+      <if test="updateBy != null">
+        #{updateBy,jdbcType=VARCHAR},
+      </if>
+      <if test="updateTime != null">
+        #{updateTime,jdbcType=TIMESTAMP},
+      </if>
+      <if test="delFlag != null">
+        #{delFlag,jdbcType=TINYINT},
+      </if>
+    </trim>
+  </insert>
+  <select id="countByExample" parameterType="com.research.system.domain.po.ChatSessionMembersExample" resultType="java.lang.Long">
+    select count(*) from chat_session_members
+    <if test="_parameter != null">
+      <include refid="Example_Where_Clause" />
+    </if>
+  </select>
+  <update id="updateByExampleSelective" parameterType="map">
+    update chat_session_members
+    <set>
+      <if test="record.id != null">
+        id = #{record.id,jdbcType=BIGINT},
+      </if>
+      <if test="record.sessionId != null">
+        session_id = #{record.sessionId,jdbcType=BIGINT},
+      </if>
+      <if test="record.sessionMemberId != null">
+        session_member_id = #{record.sessionMemberId,jdbcType=BIGINT},
+      </if>
+      <if test="record.isCreator != null">
+        is_creator = #{record.isCreator,jdbcType=TINYINT},
+      </if>
+      <if test="record.isAdmin != null">
+        is_admin = #{record.isAdmin,jdbcType=TINYINT},
+      </if>
+      <if test="record.sessionAlias != null">
+        session_alias = #{record.sessionAlias,jdbcType=VARCHAR},
+      </if>
+      <if test="record.createBy != null">
+        create_by = #{record.createBy,jdbcType=VARCHAR},
+      </if>
+      <if test="record.createTime != null">
+        create_time = #{record.createTime,jdbcType=TIMESTAMP},
+      </if>
+      <if test="record.updateBy != null">
+        update_by = #{record.updateBy,jdbcType=VARCHAR},
+      </if>
+      <if test="record.updateTime != null">
+        update_time = #{record.updateTime,jdbcType=TIMESTAMP},
+      </if>
+      <if test="record.delFlag != null">
+        del_flag = #{record.delFlag,jdbcType=TINYINT},
+      </if>
+    </set>
+    <if test="_parameter != null">
+      <include refid="Update_By_Example_Where_Clause" />
+    </if>
+  </update>
+  <update id="updateByExample" parameterType="map">
+    update chat_session_members
+    set id = #{record.id,jdbcType=BIGINT},
+      session_id = #{record.sessionId,jdbcType=BIGINT},
+      session_member_id = #{record.sessionMemberId,jdbcType=BIGINT},
+      is_creator = #{record.isCreator,jdbcType=TINYINT},
+      is_admin = #{record.isAdmin,jdbcType=TINYINT},
+      session_alias = #{record.sessionAlias,jdbcType=VARCHAR},
+      create_by = #{record.createBy,jdbcType=VARCHAR},
+      create_time = #{record.createTime,jdbcType=TIMESTAMP},
+      update_by = #{record.updateBy,jdbcType=VARCHAR},
+      update_time = #{record.updateTime,jdbcType=TIMESTAMP},
+      del_flag = #{record.delFlag,jdbcType=TINYINT}
+    <if test="_parameter != null">
+      <include refid="Update_By_Example_Where_Clause" />
+    </if>
+  </update>
+  <update id="updateByPrimaryKeySelective" parameterType="com.research.system.domain.po.ChatSessionMembers">
+    update chat_session_members
+    <set>
+      <if test="sessionId != null">
+        session_id = #{sessionId,jdbcType=BIGINT},
+      </if>
+      <if test="sessionMemberId != null">
+        session_member_id = #{sessionMemberId,jdbcType=BIGINT},
+      </if>
+      <if test="isCreator != null">
+        is_creator = #{isCreator,jdbcType=TINYINT},
+      </if>
+      <if test="isAdmin != null">
+        is_admin = #{isAdmin,jdbcType=TINYINT},
+      </if>
+      <if test="sessionAlias != null">
+        session_alias = #{sessionAlias,jdbcType=VARCHAR},
+      </if>
+      <if test="createBy != null">
+        create_by = #{createBy,jdbcType=VARCHAR},
+      </if>
+      <if test="createTime != null">
+        create_time = #{createTime,jdbcType=TIMESTAMP},
+      </if>
+      <if test="updateBy != null">
+        update_by = #{updateBy,jdbcType=VARCHAR},
+      </if>
+      <if test="updateTime != null">
+        update_time = #{updateTime,jdbcType=TIMESTAMP},
+      </if>
+      <if test="delFlag != null">
+        del_flag = #{delFlag,jdbcType=TINYINT},
+      </if>
+    </set>
+    where id = #{id,jdbcType=BIGINT}
+  </update>
+  <update id="updateByPrimaryKey" parameterType="com.research.system.domain.po.ChatSessionMembers">
+    update chat_session_members
+    set session_id = #{sessionId,jdbcType=BIGINT},
+      session_member_id = #{sessionMemberId,jdbcType=BIGINT},
+      is_creator = #{isCreator,jdbcType=TINYINT},
+      is_admin = #{isAdmin,jdbcType=TINYINT},
+      session_alias = #{sessionAlias,jdbcType=VARCHAR},
+      create_by = #{createBy,jdbcType=VARCHAR},
+      create_time = #{createTime,jdbcType=TIMESTAMP},
+      update_by = #{updateBy,jdbcType=VARCHAR},
+      update_time = #{updateTime,jdbcType=TIMESTAMP},
+      del_flag = #{delFlag,jdbcType=TINYINT}
+    where id = #{id,jdbcType=BIGINT}
+  </update>
+</mapper>
\ No newline at end of file
diff --git a/research-system/src/main/resources/mapper/system/ChatSessionMessagesMapper.xml b/research-system/src/main/resources/mapper/system/ChatSessionMessagesMapper.xml
new file mode 100644
index 00000000..7c0e5a2a
--- /dev/null
+++ b/research-system/src/main/resources/mapper/system/ChatSessionMessagesMapper.xml
@@ -0,0 +1,317 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+<mapper namespace="com.research.system.persist.mapper.ChatSessionMessagesMapper">
+  <resultMap id="BaseResultMap" type="com.research.system.domain.po.ChatSessionMessages">
+    <id column="id" jdbcType="BIGINT" property="id" />
+    <result column="session_id" jdbcType="BIGINT" property="sessionId" />
+    <result column="sender_id" jdbcType="BIGINT" property="senderId" />
+    <result column="content_type" jdbcType="TINYINT" property="contentType" />
+    <result column="content" jdbcType="VARCHAR" property="content" />
+    <result column="referenced_message_id" jdbcType="BIGINT" property="referencedMessageId" />
+    <result column="mentioned_users" jdbcType="VARCHAR" property="mentionedUsers" />
+    <result column="create_by" jdbcType="VARCHAR" property="createBy" />
+    <result column="create_time" jdbcType="TIMESTAMP" property="createTime" />
+    <result column="update_by" jdbcType="VARCHAR" property="updateBy" />
+    <result column="update_time" jdbcType="TIMESTAMP" property="updateTime" />
+    <result column="del_flag" jdbcType="TINYINT" property="delFlag" />
+  </resultMap>
+  <sql id="Example_Where_Clause">
+    <where>
+      <foreach collection="oredCriteria" item="criteria" separator="or">
+        <if test="criteria.valid">
+          <trim prefix="(" prefixOverrides="and" suffix=")">
+            <foreach collection="criteria.criteria" item="criterion">
+              <choose>
+                <when test="criterion.noValue">
+                  and ${criterion.condition}
+                </when>
+                <when test="criterion.singleValue">
+                  and ${criterion.condition} #{criterion.value}
+                </when>
+                <when test="criterion.betweenValue">
+                  and ${criterion.condition} #{criterion.value} and #{criterion.secondValue}
+                </when>
+                <when test="criterion.listValue">
+                  and ${criterion.condition}
+                  <foreach close=")" collection="criterion.value" item="listItem" open="(" separator=",">
+                    #{listItem}
+                  </foreach>
+                </when>
+              </choose>
+            </foreach>
+          </trim>
+        </if>
+      </foreach>
+    </where>
+  </sql>
+  <sql id="Update_By_Example_Where_Clause">
+    <where>
+      <foreach collection="example.oredCriteria" item="criteria" separator="or">
+        <if test="criteria.valid">
+          <trim prefix="(" prefixOverrides="and" suffix=")">
+            <foreach collection="criteria.criteria" item="criterion">
+              <choose>
+                <when test="criterion.noValue">
+                  and ${criterion.condition}
+                </when>
+                <when test="criterion.singleValue">
+                  and ${criterion.condition} #{criterion.value}
+                </when>
+                <when test="criterion.betweenValue">
+                  and ${criterion.condition} #{criterion.value} and #{criterion.secondValue}
+                </when>
+                <when test="criterion.listValue">
+                  and ${criterion.condition}
+                  <foreach close=")" collection="criterion.value" item="listItem" open="(" separator=",">
+                    #{listItem}
+                  </foreach>
+                </when>
+              </choose>
+            </foreach>
+          </trim>
+        </if>
+      </foreach>
+    </where>
+  </sql>
+  <sql id="Base_Column_List">
+    id, session_id, sender_id, content_type, content, referenced_message_id, mentioned_users, 
+    create_by, create_time, update_by, update_time, del_flag
+  </sql>
+  <select id="selectByExample" parameterType="com.research.system.domain.po.ChatSessionMessagesExample" resultMap="BaseResultMap">
+    select
+    <if test="distinct">
+      distinct
+    </if>
+    <include refid="Base_Column_List" />
+    from chat_session_messages
+    <if test="_parameter != null">
+      <include refid="Example_Where_Clause" />
+    </if>
+    <if test="orderByClause != null">
+      order by ${orderByClause}
+    </if>
+  </select>
+  <select id="selectByPrimaryKey" parameterType="java.lang.Long" resultMap="BaseResultMap">
+    select 
+    <include refid="Base_Column_List" />
+    from chat_session_messages
+    where id = #{id,jdbcType=BIGINT}
+  </select>
+  <delete id="deleteByPrimaryKey" parameterType="java.lang.Long">
+    delete from chat_session_messages
+    where id = #{id,jdbcType=BIGINT}
+  </delete>
+  <insert id="insert" parameterType="com.research.system.domain.po.ChatSessionMessages">
+    insert into chat_session_messages (id, session_id, sender_id, 
+      content_type, content, referenced_message_id, 
+      mentioned_users, create_by, create_time, 
+      update_by, update_time, del_flag
+      )
+    values (#{id,jdbcType=BIGINT}, #{sessionId,jdbcType=BIGINT}, #{senderId,jdbcType=BIGINT}, 
+      #{contentType,jdbcType=TINYINT}, #{content,jdbcType=VARCHAR}, #{referencedMessageId,jdbcType=BIGINT}, 
+      #{mentionedUsers,jdbcType=VARCHAR}, #{createBy,jdbcType=VARCHAR}, #{createTime,jdbcType=TIMESTAMP}, 
+      #{updateBy,jdbcType=VARCHAR}, #{updateTime,jdbcType=TIMESTAMP}, #{delFlag,jdbcType=TINYINT}
+      )
+  </insert>
+  <insert id="insertSelective" parameterType="com.research.system.domain.po.ChatSessionMessages">
+    insert into chat_session_messages
+    <trim prefix="(" suffix=")" suffixOverrides=",">
+      <if test="id != null">
+        id,
+      </if>
+      <if test="sessionId != null">
+        session_id,
+      </if>
+      <if test="senderId != null">
+        sender_id,
+      </if>
+      <if test="contentType != null">
+        content_type,
+      </if>
+      <if test="content != null">
+        content,
+      </if>
+      <if test="referencedMessageId != null">
+        referenced_message_id,
+      </if>
+      <if test="mentionedUsers != null">
+        mentioned_users,
+      </if>
+      <if test="createBy != null">
+        create_by,
+      </if>
+      <if test="createTime != null">
+        create_time,
+      </if>
+      <if test="updateBy != null">
+        update_by,
+      </if>
+      <if test="updateTime != null">
+        update_time,
+      </if>
+      <if test="delFlag != null">
+        del_flag,
+      </if>
+    </trim>
+    <trim prefix="values (" suffix=")" suffixOverrides=",">
+      <if test="id != null">
+        #{id,jdbcType=BIGINT},
+      </if>
+      <if test="sessionId != null">
+        #{sessionId,jdbcType=BIGINT},
+      </if>
+      <if test="senderId != null">
+        #{senderId,jdbcType=BIGINT},
+      </if>
+      <if test="contentType != null">
+        #{contentType,jdbcType=TINYINT},
+      </if>
+      <if test="content != null">
+        #{content,jdbcType=VARCHAR},
+      </if>
+      <if test="referencedMessageId != null">
+        #{referencedMessageId,jdbcType=BIGINT},
+      </if>
+      <if test="mentionedUsers != null">
+        #{mentionedUsers,jdbcType=VARCHAR},
+      </if>
+      <if test="createBy != null">
+        #{createBy,jdbcType=VARCHAR},
+      </if>
+      <if test="createTime != null">
+        #{createTime,jdbcType=TIMESTAMP},
+      </if>
+      <if test="updateBy != null">
+        #{updateBy,jdbcType=VARCHAR},
+      </if>
+      <if test="updateTime != null">
+        #{updateTime,jdbcType=TIMESTAMP},
+      </if>
+      <if test="delFlag != null">
+        #{delFlag,jdbcType=TINYINT},
+      </if>
+    </trim>
+  </insert>
+  <select id="countByExample" parameterType="com.research.system.domain.po.ChatSessionMessagesExample" resultType="java.lang.Long">
+    select count(*) from chat_session_messages
+    <if test="_parameter != null">
+      <include refid="Example_Where_Clause" />
+    </if>
+  </select>
+  <update id="updateByExampleSelective" parameterType="map">
+    update chat_session_messages
+    <set>
+      <if test="record.id != null">
+        id = #{record.id,jdbcType=BIGINT},
+      </if>
+      <if test="record.sessionId != null">
+        session_id = #{record.sessionId,jdbcType=BIGINT},
+      </if>
+      <if test="record.senderId != null">
+        sender_id = #{record.senderId,jdbcType=BIGINT},
+      </if>
+      <if test="record.contentType != null">
+        content_type = #{record.contentType,jdbcType=TINYINT},
+      </if>
+      <if test="record.content != null">
+        content = #{record.content,jdbcType=VARCHAR},
+      </if>
+      <if test="record.referencedMessageId != null">
+        referenced_message_id = #{record.referencedMessageId,jdbcType=BIGINT},
+      </if>
+      <if test="record.mentionedUsers != null">
+        mentioned_users = #{record.mentionedUsers,jdbcType=VARCHAR},
+      </if>
+      <if test="record.createBy != null">
+        create_by = #{record.createBy,jdbcType=VARCHAR},
+      </if>
+      <if test="record.createTime != null">
+        create_time = #{record.createTime,jdbcType=TIMESTAMP},
+      </if>
+      <if test="record.updateBy != null">
+        update_by = #{record.updateBy,jdbcType=VARCHAR},
+      </if>
+      <if test="record.updateTime != null">
+        update_time = #{record.updateTime,jdbcType=TIMESTAMP},
+      </if>
+      <if test="record.delFlag != null">
+        del_flag = #{record.delFlag,jdbcType=TINYINT},
+      </if>
+    </set>
+    <if test="_parameter != null">
+      <include refid="Update_By_Example_Where_Clause" />
+    </if>
+  </update>
+  <update id="updateByExample" parameterType="map">
+    update chat_session_messages
+    set id = #{record.id,jdbcType=BIGINT},
+      session_id = #{record.sessionId,jdbcType=BIGINT},
+      sender_id = #{record.senderId,jdbcType=BIGINT},
+      content_type = #{record.contentType,jdbcType=TINYINT},
+      content = #{record.content,jdbcType=VARCHAR},
+      referenced_message_id = #{record.referencedMessageId,jdbcType=BIGINT},
+      mentioned_users = #{record.mentionedUsers,jdbcType=VARCHAR},
+      create_by = #{record.createBy,jdbcType=VARCHAR},
+      create_time = #{record.createTime,jdbcType=TIMESTAMP},
+      update_by = #{record.updateBy,jdbcType=VARCHAR},
+      update_time = #{record.updateTime,jdbcType=TIMESTAMP},
+      del_flag = #{record.delFlag,jdbcType=TINYINT}
+    <if test="_parameter != null">
+      <include refid="Update_By_Example_Where_Clause" />
+    </if>
+  </update>
+  <update id="updateByPrimaryKeySelective" parameterType="com.research.system.domain.po.ChatSessionMessages">
+    update chat_session_messages
+    <set>
+      <if test="sessionId != null">
+        session_id = #{sessionId,jdbcType=BIGINT},
+      </if>
+      <if test="senderId != null">
+        sender_id = #{senderId,jdbcType=BIGINT},
+      </if>
+      <if test="contentType != null">
+        content_type = #{contentType,jdbcType=TINYINT},
+      </if>
+      <if test="content != null">
+        content = #{content,jdbcType=VARCHAR},
+      </if>
+      <if test="referencedMessageId != null">
+        referenced_message_id = #{referencedMessageId,jdbcType=BIGINT},
+      </if>
+      <if test="mentionedUsers != null">
+        mentioned_users = #{mentionedUsers,jdbcType=VARCHAR},
+      </if>
+      <if test="createBy != null">
+        create_by = #{createBy,jdbcType=VARCHAR},
+      </if>
+      <if test="createTime != null">
+        create_time = #{createTime,jdbcType=TIMESTAMP},
+      </if>
+      <if test="updateBy != null">
+        update_by = #{updateBy,jdbcType=VARCHAR},
+      </if>
+      <if test="updateTime != null">
+        update_time = #{updateTime,jdbcType=TIMESTAMP},
+      </if>
+      <if test="delFlag != null">
+        del_flag = #{delFlag,jdbcType=TINYINT},
+      </if>
+    </set>
+    where id = #{id,jdbcType=BIGINT}
+  </update>
+  <update id="updateByPrimaryKey" parameterType="com.research.system.domain.po.ChatSessionMessages">
+    update chat_session_messages
+    set session_id = #{sessionId,jdbcType=BIGINT},
+      sender_id = #{senderId,jdbcType=BIGINT},
+      content_type = #{contentType,jdbcType=TINYINT},
+      content = #{content,jdbcType=VARCHAR},
+      referenced_message_id = #{referencedMessageId,jdbcType=BIGINT},
+      mentioned_users = #{mentionedUsers,jdbcType=VARCHAR},
+      create_by = #{createBy,jdbcType=VARCHAR},
+      create_time = #{createTime,jdbcType=TIMESTAMP},
+      update_by = #{updateBy,jdbcType=VARCHAR},
+      update_time = #{updateTime,jdbcType=TIMESTAMP},
+      del_flag = #{delFlag,jdbcType=TINYINT}
+    where id = #{id,jdbcType=BIGINT}
+  </update>
+</mapper>
\ No newline at end of file
diff --git a/research-system/src/main/resources/mapper/system/ChatSessionsMapper.xml b/research-system/src/main/resources/mapper/system/ChatSessionsMapper.xml
new file mode 100644
index 00000000..3744aa13
--- /dev/null
+++ b/research-system/src/main/resources/mapper/system/ChatSessionsMapper.xml
@@ -0,0 +1,300 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+<mapper namespace="com.research.system.persist.mapper.ChatSessionsMapper">
+  <resultMap id="BaseResultMap" type="com.research.system.domain.po.ChatSessions">
+    <id column="id" jdbcType="BIGINT" property="id" />
+    <result column="session_type" jdbcType="TINYINT" property="sessionType" />
+    <result column="session_name" jdbcType="VARCHAR" property="sessionName" />
+    <result column="created_by" jdbcType="BIGINT" property="createdBy" />
+    <result column="created_at" jdbcType="TIMESTAMP" property="createdAt" />
+    <result column="avatar_url" jdbcType="VARCHAR" property="avatarUrl" />
+    <result column="create_by" jdbcType="VARCHAR" property="createBy" />
+    <result column="create_time" jdbcType="TIMESTAMP" property="createTime" />
+    <result column="update_by" jdbcType="VARCHAR" property="updateBy" />
+    <result column="update_time" jdbcType="TIMESTAMP" property="updateTime" />
+    <result column="del_flag" jdbcType="TINYINT" property="delFlag" />
+  </resultMap>
+  <sql id="Example_Where_Clause">
+    <where>
+      <foreach collection="oredCriteria" item="criteria" separator="or">
+        <if test="criteria.valid">
+          <trim prefix="(" prefixOverrides="and" suffix=")">
+            <foreach collection="criteria.criteria" item="criterion">
+              <choose>
+                <when test="criterion.noValue">
+                  and ${criterion.condition}
+                </when>
+                <when test="criterion.singleValue">
+                  and ${criterion.condition} #{criterion.value}
+                </when>
+                <when test="criterion.betweenValue">
+                  and ${criterion.condition} #{criterion.value} and #{criterion.secondValue}
+                </when>
+                <when test="criterion.listValue">
+                  and ${criterion.condition}
+                  <foreach close=")" collection="criterion.value" item="listItem" open="(" separator=",">
+                    #{listItem}
+                  </foreach>
+                </when>
+              </choose>
+            </foreach>
+          </trim>
+        </if>
+      </foreach>
+    </where>
+  </sql>
+  <sql id="Update_By_Example_Where_Clause">
+    <where>
+      <foreach collection="example.oredCriteria" item="criteria" separator="or">
+        <if test="criteria.valid">
+          <trim prefix="(" prefixOverrides="and" suffix=")">
+            <foreach collection="criteria.criteria" item="criterion">
+              <choose>
+                <when test="criterion.noValue">
+                  and ${criterion.condition}
+                </when>
+                <when test="criterion.singleValue">
+                  and ${criterion.condition} #{criterion.value}
+                </when>
+                <when test="criterion.betweenValue">
+                  and ${criterion.condition} #{criterion.value} and #{criterion.secondValue}
+                </when>
+                <when test="criterion.listValue">
+                  and ${criterion.condition}
+                  <foreach close=")" collection="criterion.value" item="listItem" open="(" separator=",">
+                    #{listItem}
+                  </foreach>
+                </when>
+              </choose>
+            </foreach>
+          </trim>
+        </if>
+      </foreach>
+    </where>
+  </sql>
+  <sql id="Base_Column_List">
+    id, session_type, session_name, created_by, created_at, avatar_url, create_by, create_time, 
+    update_by, update_time, del_flag
+  </sql>
+  <select id="selectByExample" parameterType="com.research.system.domain.po.ChatSessionsExample" resultMap="BaseResultMap">
+    select
+    <if test="distinct">
+      distinct
+    </if>
+    <include refid="Base_Column_List" />
+    from chat_sessions
+    <if test="_parameter != null">
+      <include refid="Example_Where_Clause" />
+    </if>
+    <if test="orderByClause != null">
+      order by ${orderByClause}
+    </if>
+  </select>
+  <select id="selectByPrimaryKey" parameterType="java.lang.Long" resultMap="BaseResultMap">
+    select 
+    <include refid="Base_Column_List" />
+    from chat_sessions
+    where id = #{id,jdbcType=BIGINT}
+  </select>
+  <delete id="deleteByPrimaryKey" parameterType="java.lang.Long">
+    delete from chat_sessions
+    where id = #{id,jdbcType=BIGINT}
+  </delete>
+  <insert id="insert" parameterType="com.research.system.domain.po.ChatSessions">
+    insert into chat_sessions (id, session_type, session_name, 
+      created_by, created_at, avatar_url, 
+      create_by, create_time, update_by, 
+      update_time, del_flag)
+    values (#{id,jdbcType=BIGINT}, #{sessionType,jdbcType=TINYINT}, #{sessionName,jdbcType=VARCHAR}, 
+      #{createdBy,jdbcType=BIGINT}, #{createdAt,jdbcType=TIMESTAMP}, #{avatarUrl,jdbcType=VARCHAR}, 
+      #{createBy,jdbcType=VARCHAR}, #{createTime,jdbcType=TIMESTAMP}, #{updateBy,jdbcType=VARCHAR}, 
+      #{updateTime,jdbcType=TIMESTAMP}, #{delFlag,jdbcType=TINYINT})
+  </insert>
+  <insert id="insertSelective" parameterType="com.research.system.domain.po.ChatSessions">
+    insert into chat_sessions
+    <trim prefix="(" suffix=")" suffixOverrides=",">
+      <if test="id != null">
+        id,
+      </if>
+      <if test="sessionType != null">
+        session_type,
+      </if>
+      <if test="sessionName != null">
+        session_name,
+      </if>
+      <if test="createdBy != null">
+        created_by,
+      </if>
+      <if test="createdAt != null">
+        created_at,
+      </if>
+      <if test="avatarUrl != null">
+        avatar_url,
+      </if>
+      <if test="createBy != null">
+        create_by,
+      </if>
+      <if test="createTime != null">
+        create_time,
+      </if>
+      <if test="updateBy != null">
+        update_by,
+      </if>
+      <if test="updateTime != null">
+        update_time,
+      </if>
+      <if test="delFlag != null">
+        del_flag,
+      </if>
+    </trim>
+    <trim prefix="values (" suffix=")" suffixOverrides=",">
+      <if test="id != null">
+        #{id,jdbcType=BIGINT},
+      </if>
+      <if test="sessionType != null">
+        #{sessionType,jdbcType=TINYINT},
+      </if>
+      <if test="sessionName != null">
+        #{sessionName,jdbcType=VARCHAR},
+      </if>
+      <if test="createdBy != null">
+        #{createdBy,jdbcType=BIGINT},
+      </if>
+      <if test="createdAt != null">
+        #{createdAt,jdbcType=TIMESTAMP},
+      </if>
+      <if test="avatarUrl != null">
+        #{avatarUrl,jdbcType=VARCHAR},
+      </if>
+      <if test="createBy != null">
+        #{createBy,jdbcType=VARCHAR},
+      </if>
+      <if test="createTime != null">
+        #{createTime,jdbcType=TIMESTAMP},
+      </if>
+      <if test="updateBy != null">
+        #{updateBy,jdbcType=VARCHAR},
+      </if>
+      <if test="updateTime != null">
+        #{updateTime,jdbcType=TIMESTAMP},
+      </if>
+      <if test="delFlag != null">
+        #{delFlag,jdbcType=TINYINT},
+      </if>
+    </trim>
+  </insert>
+  <select id="countByExample" parameterType="com.research.system.domain.po.ChatSessionsExample" resultType="java.lang.Long">
+    select count(*) from chat_sessions
+    <if test="_parameter != null">
+      <include refid="Example_Where_Clause" />
+    </if>
+  </select>
+  <update id="updateByExampleSelective" parameterType="map">
+    update chat_sessions
+    <set>
+      <if test="record.id != null">
+        id = #{record.id,jdbcType=BIGINT},
+      </if>
+      <if test="record.sessionType != null">
+        session_type = #{record.sessionType,jdbcType=TINYINT},
+      </if>
+      <if test="record.sessionName != null">
+        session_name = #{record.sessionName,jdbcType=VARCHAR},
+      </if>
+      <if test="record.createdBy != null">
+        created_by = #{record.createdBy,jdbcType=BIGINT},
+      </if>
+      <if test="record.createdAt != null">
+        created_at = #{record.createdAt,jdbcType=TIMESTAMP},
+      </if>
+      <if test="record.avatarUrl != null">
+        avatar_url = #{record.avatarUrl,jdbcType=VARCHAR},
+      </if>
+      <if test="record.createBy != null">
+        create_by = #{record.createBy,jdbcType=VARCHAR},
+      </if>
+      <if test="record.createTime != null">
+        create_time = #{record.createTime,jdbcType=TIMESTAMP},
+      </if>
+      <if test="record.updateBy != null">
+        update_by = #{record.updateBy,jdbcType=VARCHAR},
+      </if>
+      <if test="record.updateTime != null">
+        update_time = #{record.updateTime,jdbcType=TIMESTAMP},
+      </if>
+      <if test="record.delFlag != null">
+        del_flag = #{record.delFlag,jdbcType=TINYINT},
+      </if>
+    </set>
+    <if test="_parameter != null">
+      <include refid="Update_By_Example_Where_Clause" />
+    </if>
+  </update>
+  <update id="updateByExample" parameterType="map">
+    update chat_sessions
+    set id = #{record.id,jdbcType=BIGINT},
+      session_type = #{record.sessionType,jdbcType=TINYINT},
+      session_name = #{record.sessionName,jdbcType=VARCHAR},
+      created_by = #{record.createdBy,jdbcType=BIGINT},
+      created_at = #{record.createdAt,jdbcType=TIMESTAMP},
+      avatar_url = #{record.avatarUrl,jdbcType=VARCHAR},
+      create_by = #{record.createBy,jdbcType=VARCHAR},
+      create_time = #{record.createTime,jdbcType=TIMESTAMP},
+      update_by = #{record.updateBy,jdbcType=VARCHAR},
+      update_time = #{record.updateTime,jdbcType=TIMESTAMP},
+      del_flag = #{record.delFlag,jdbcType=TINYINT}
+    <if test="_parameter != null">
+      <include refid="Update_By_Example_Where_Clause" />
+    </if>
+  </update>
+  <update id="updateByPrimaryKeySelective" parameterType="com.research.system.domain.po.ChatSessions">
+    update chat_sessions
+    <set>
+      <if test="sessionType != null">
+        session_type = #{sessionType,jdbcType=TINYINT},
+      </if>
+      <if test="sessionName != null">
+        session_name = #{sessionName,jdbcType=VARCHAR},
+      </if>
+      <if test="createdBy != null">
+        created_by = #{createdBy,jdbcType=BIGINT},
+      </if>
+      <if test="createdAt != null">
+        created_at = #{createdAt,jdbcType=TIMESTAMP},
+      </if>
+      <if test="avatarUrl != null">
+        avatar_url = #{avatarUrl,jdbcType=VARCHAR},
+      </if>
+      <if test="createBy != null">
+        create_by = #{createBy,jdbcType=VARCHAR},
+      </if>
+      <if test="createTime != null">
+        create_time = #{createTime,jdbcType=TIMESTAMP},
+      </if>
+      <if test="updateBy != null">
+        update_by = #{updateBy,jdbcType=VARCHAR},
+      </if>
+      <if test="updateTime != null">
+        update_time = #{updateTime,jdbcType=TIMESTAMP},
+      </if>
+      <if test="delFlag != null">
+        del_flag = #{delFlag,jdbcType=TINYINT},
+      </if>
+    </set>
+    where id = #{id,jdbcType=BIGINT}
+  </update>
+  <update id="updateByPrimaryKey" parameterType="com.research.system.domain.po.ChatSessions">
+    update chat_sessions
+    set session_type = #{sessionType,jdbcType=TINYINT},
+      session_name = #{sessionName,jdbcType=VARCHAR},
+      created_by = #{createdBy,jdbcType=BIGINT},
+      created_at = #{createdAt,jdbcType=TIMESTAMP},
+      avatar_url = #{avatarUrl,jdbcType=VARCHAR},
+      create_by = #{createBy,jdbcType=VARCHAR},
+      create_time = #{createTime,jdbcType=TIMESTAMP},
+      update_by = #{updateBy,jdbcType=VARCHAR},
+      update_time = #{updateTime,jdbcType=TIMESTAMP},
+      del_flag = #{delFlag,jdbcType=TINYINT}
+    where id = #{id,jdbcType=BIGINT}
+  </update>
+</mapper>
\ No newline at end of file