test upload file

application/admin/controller/Em.php

@@ -508,9 +508,9 @@ class Em extends Base
         $result = $upload->upload();
 
         if(!empty($result)){
-            return jsonSuc('bbb',$result);
+            return jsonSuc('aaaa',$result);
         } else {
-            return jsonErr("aaa");
+            return jsonErr('bbbb');
         }
     }