Golang New 关键字的小bug 未找到原因(暂时)

Posted 2020-10-21 evildoerone

在使用new关键字对res 进行初始化不会出现SendXml方法中的xml.unmashal方法不成功现象, 而如果使用new关键字的分解动作对res先取零值结构体 然后取地址后,就会出现xml.unmashal不成功(無报错),初始估计是xml.unmashal对interface的地址操作出现误差,但是具体情况未知

func PostapiRequest(req interface{}) (res interface{}, response api.ExtensionResponse) {
   body, err := xml.Marshal(req)
   if err != nil {
      log.Println("create byte xml err---->", err)
      return
   }
   
   switch req.(type) {
   case hotelSearchWithRooms.HotelSearchWithRoomsReq:
      res = new(hotelSearchWithRooms.HotelSearchWithRoomsRes)
   case hotelDetails.HotelDetailsReq:
      res = new(hotelDetails.HotelDetailsRes)
   case hotelCancellationPolicy.HotelCancelPolicyReq:
      res = new(hotelCancellationPolicy.HotelCancelPolicyRes)
   case countryList.CountryListReq:
      res = new(countryList.CountryListRes)
   case cityList.CityListReq:
      res =new(cityList.CityListRes)
   }
   
   fmt.Println(string(body))
   fmt.Println(reflect.TypeOf(req))
   response.TimeNow = time.Now()
   
   code, message, data := api.HttpClient.SendXml(api.APIurl, body, api.Heads, 0, res)
   
   response.Code = code
   response.Message = message
   response.UrlLog = api.APIurl
   response.BodyLog = utils.Bytes2String(body)
   response.DataLog = utils.Bytes2String(data)
   response.Err = err
   if code != commobj.SUCCESS {
      log.Println(message)
   } else {
      fmt.Printf("%+v\n", res)

   }
   
   return
}
暂时记录下来方便下次查找,目前建议尽量使用new关键字进行初始化