防止回放空时报空指针

gaoxun250@sina.com

2023-03-10 273b282af6f74403a0b13d2694beb4b7f48edaf6

 src/main/java/com/genersoft/iot/vmp/storager/dao/DeviceMapper.java

@@ -280,4 +280,6 @@
    @Select("select count(1) as total, sum(online) as online from device")
    ResourceBaceInfo getOverview();

    @Select("select * from device")
    List<Device> getAll();
}