create order bugfix

share-system/src/main/java/share/system/service/impl/SOrderServiceImpl.java

@@ -741,7 +741,7 @@ public class SOrderServiceImpl extends ServiceImpl<SOrderMapper, SOrder> impleme
     }
 
     private void checkOrderRoomStat(SRoom room) {
-        if (ObjectUtil.isNotEmpty(room)){
+        if (ObjectUtil.isEmpty(room)){
             throw new BaseException("房间不存在！");
         }
         if(room.getRoomStat()!=null&&RoomStatEnum.ITEM_UP_SHELF.getValue().compareTo(room.getRoomStat())!=0){