update

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

@@ -483,7 +483,7 @@ public class RoomServiceImpl implements RoomService {
         if (roleEnum != RoleStudent && isUserDisplay(room, userId)) {
             updateDisplay(roomId, userId, "", 0);
         }
-        if (roomMemberDao.countByRid(roomId) == 1) {
+        if (roomMemberDao.countByRid(roomId) <= 1) {
             roomMemberDao.deleteUserByRidAndUid(roomId, userId);
             roomDao.deleteByRid(roomId);
             deleteWhiteboardByUser(roomId, userId);