update

mec-biz/src/main/java/com/ym/mec/biz/dal/dao/CourseScheduleDao.java

@@ -1583,4 +1583,6 @@ public interface CourseScheduleDao extends BaseDAO<Long, CourseSchedule> {
      * @return java.util.List<com.ym.mec.biz.dal.dto.CourseRepeatCheckDto>
      */
     List<CourseRepeatCheckDto> getCourseRepeatCheckInfos();
+
+    CourseSchedule getLock (long courseId);
 }

mec-biz/src/main/resources/config/mybatis/CourseScheduleMapper.xml

@@ -3338,5 +3338,8 @@
         LEFT JOIN course_schedule_teacher_salary csts ON cs.id_=csts.course_schedule_id_
         WHERE cs.organ_id_!=41 AND cs.del_flag_=0 AND cs.create_time_>'2020-01-01 00:00:00' AND cs.create_time_<'3000-01-01 00:00:00'
     </select>
+    <select id="getLock" resultMap="CourseSchedule">
+        SELECT * FROM course_schedule WHERE id_ = #{courseId} FOR UPDATE
+    </select>
 
 </mapper>

mec-im/src/main/java/com/ym/service/Impl/RoomServiceImpl.java

@@ -243,7 +243,7 @@ public class RoomServiceImpl implements RoomService {
 
         log.info("joinRoomSuccess : roomId={}, userId={}", roomId, userId);
         RoleEnum roleEnum = RoleEnum.getEnumByValue(roomMember.getRole());
-        CourseSchedule schedule = courseScheduleDao.get(Long.parseLong(roomId.substring(1)));
+        CourseSchedule schedule = courseScheduleDao.getLock(Long.parseLong(roomId.substring(1)));
 
         String display = "";
         if(roleEnum == RoleTeacher){
@@ -254,7 +254,7 @@ public class RoomServiceImpl implements RoomService {
             display = "display://type=0?userId=" + userId + "?uri=";
         }
         Date curTime = DateTimeUtils.currentUTC();
-        Room room = roomDao.findByLockRid(roomId);
+        Room room = roomDao.findByRid(roomId);
         if (room == null) {
             //如果房间不存在，删除除了自己之外的其他用户
 //            roomMemberDao.deleteRoomMember(roomId,userId);