public function resetPasswd()
 {
     parent::checkAdmin();
     if (isset($_POST['send'])) {
         $model = new AdminModel();
         $model->oldPassword = sha1(trim($_POST['oldPassword']));
         $model->password = sha1(trim($_POST['password']));
         if ($model->resetPasswd()) {
             Tool::alert('密码修改成功');
         } else {
             Tool::alertBackNoRefresh('原密码不正确或密码修改失败:(');
         }
     }
     $this->render('default/resetPasswd');
 }