判断时间，修改臭氧8小时滑动平均值

lizijie

2021-11-12 73c9bf4f63aaa04c60bde8174d590169b3ae8aa7

 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());