json返回添加md5

@@ -145,7 +145,8 @@ class Controller_Abstract extends Framework_YController
 			'status' => $status, 
 			'code' => $code, 
 			'data' => $data, 
-			'message' => $message
+			'message' => $message,
+		    'md5' => md5(json_encode($data))
 		));
 	}