07 29 02 fix_add login codes

src/main/java/com/imed/costaccount/common/util/Result.java

@@ -43,7 +43,9 @@ public class Result {
         return new Result(data);
     }
 
-
+    public static Result ok () {
+        return new Result(null);
+    }
     public Result() {
 
     }