Merge remote-tracking branch 'origin/master'

edu-im/edu-im-server/src/main/java/com/keao/edu/im/service/Impl/RoomServiceImpl.java

@@ -1272,7 +1272,8 @@ public class RoomServiceImpl implements RoomService {
         }else if(notify.getEvent() == 2){
             //房间创建
         }else if(notify.getEvent() == 3){
-            //房间销毁
+            //房间销毁(删除缓存的sessionId)
+            redisTemplate.delete("sessionId:" + roomId);
         }else if(notify.getEvent() == 11){
             //成员加入
             joinRoomSuccess(roomMember.getExamRegistrationId(),roomId,userId);