code: func (oauth *Oauth) GetQyUserInfoByCode(code string) (result QyUserInfo, err error) {
  	qyAccessToken, e := oauth.GetQyAccessToken()
  	if e != nil {
  		err = e
  		return
  	}
  	urlStr := fmt.Sprintf(qyUserInfoURL, qyAccessToken, code)
  	var response []byte
  	response, err = util.HTTPGet(urlStr)
  	if err != nil {
  		return
  	}
  	err = json.Unmarshal(response, &result)
  	if err != nil {
  		return
  	}
  	if result.ErrCode != 0 {
  		err = fmt.Errorf("GetQyUserInfoByCode error : errcode=%v , errmsg=%v", result.ErrCode, result.ErrMsg)
  		return
  	}
  	return
  }
docs: //GetQyUserInfoByCode 根据code获取企业user_info