code: protected function parseToken($result)
      {
          $data = json_decode($result, true);
          if ($data['access_token'] && $data['expires_in'] && $data['refresh_token']) {
              $data['openid'] = $this->getOpenId();
              return $data;
          } else {
              throw new \Exception("获取开心网ACCESS_TOKEN出错：{$data['error']}");
          }
  
      }
docs: 解析access_token方法请求后的返回值
  @param string $result 获取access_token的方法的返回值