特殊设备历史表查询接口修改，无人机走航车秒数据补偿接口修改

lizijie

2021-09-17 bf4249273b9664073993c71db2cb444f5c66d2af

 screen-manage/src/main/java/com/moral/api/util/CompareFieldUtils.java

@@ -70,7 +70,7 @@
                else
                    result.setNewData(newDataObj.toString());

                if(oldDataObj==null)
                if(oldDataObj==null||oldDataObj.equals(""))
                    result.setOldData("null");
                else
                    result.setOldData(oldDataObj.toString());