go语言封装http请求工具类(访问外部接口)

代码

// example: http://host:port/uri/?param1=1&param2=2func Get(reqUrl string, jsonParams interface{}, toWho string) ([]byte, error) {var params url.Values = url.Values{}var jsonObj map[string]interface{}jsonB := StringifyJsonToBytes(jsonParams)//logger.L.Info("["+toWho+"]请求参数:"+string(jsonB), "url", reqUrl)if err := ParseJsonFromBytes(jsonB, &jsonObj); err != nil {logger.L.Trace(err)return nil, err}for k, v := range jsonObj {params.Set(k, fmt.Sprintf("%v", v))}logger.L.Debug("["+toWho+"]get请求url:", "url", reqUrl+"?"+params.Encode())req, rErr := http.NewRequest("GET", reqUrl+"?"+params.Encode(), nil)if rErr != nil {return nil, rErr}//req.Header.Set("sign", sig)req.Header.Set("Content-Type", "application/x-www-form-urlencoded;charset=UTF-8")httpClient := &http.Client{}resp, err := httpClient.Do(req)if err != nil {logger.L.Error("["+toWho+"]请求不成功:", "err", err.Error())return nil, err}defer resp.Body.Close()b, err2 := ioutil.ReadAll(resp.Body)if err2 != nil {logger.L.Error("["+toWho+"]读取响应体报错:", "err", err2.Error())return nil, err2}if len(string(b)) <= 200 {logger.L.Info("[" + toWho + "]请求结果:" + string(b))} else {logger.L.Info("[" + toWho + "]请求结果太长不打印")}if resp.StatusCode != 200 {return nil, errors.New("[" + toWho + "]请求不成功:" + string(b))}return b, nil}