datang-meeting com.datangMeeting 3.8.9 4.0.0 datang-meeting-generator generator代码生成 org.apache.velocity velocity-engine-core com.datangMeeting datang-meeting-common com.alibaba druid-spring-boot-starter org.mybatis.generator mybatis-generator-maven-plugin 1.3.7 ${basedir}/src/main/resources/mbg.xml true mysql mysql-connector-java 8.0.29