public function createAction()
 {
     if (IS_POST) {
         $input = $this->validateForm();
         $ret = $this->acl->createUser($input);
         if (is_error($ret)) {
             $this->error($ret['message']);
         } else {
             $this->success('成功新增管理用户');
             exit;
         }
     }
     $this->display('form');
 }