办公楼层概览核心指标，楼层传-2和-3会报错

src/main/java/com/sky/ioc/service/space/impl/SpaceServiceImpl.java

@@ -104,7 +104,7 @@ public class SpaceServiceImpl implements SpaceService {
                 rooms = buildingRoomMapper.selectList(null);
             }
         }
-        if(rooms!=null){
+        if(rooms!=null&&rooms.size()>0){
             List<Integer> ids = rooms.stream().map(BuildingRoom::getId).collect(Collectors.toList());
             totalStation = buildingStationMapper.selectCount(new LambdaQueryWrapper<BuildingStation>().in(BuildingStation::getRoomId,ids));
             Long usedStation = buildingStationMapper.selectCount(new LambdaQueryWrapper<BuildingStation>().in(BuildingStation::getRoomId,ids)