修改接口返回为空的问题

ruoyi-system/src/main/java/com/ruoyi/system/service/impl/TRecordServiceImpl.java

@@ -385,7 +385,7 @@ public class TRecordServiceImpl implements ITRecordService
         } else {
             list = historyDataMap.get(listName);
         }
-        list.add(val);
+        list.add(StringUtils.isNull(val) || StringUtils.isEmpty(val.toString()) ? "-1" : val);
         historyDataMap.put(listName, list);
     }