golang几种post方式

  var r http.Request
  r.ParseForm()
 r.Form.Add("uuid", orderUUID)
 bodystr := strings.TrimSpace(r.Form.Encode())
 request, err := http.NewRequest("GET", url, strings.NewReader(bodystr))
 if err != nil {
  //TODO: 
 }
 request.Header.Set("Content-Type", "application/x-www-form-urlencoded")
 request.Header.Set("Connection", "Keep-Alive")
 var resp *http.Response
 resp, err = http.DefaultClient.Do(request)
 if err != nil {
  //TODO:
 }

//body提交二进制数据
func DoBytesPost(url string, data []byte) ([]byte, error) {
  body := bytes.NewReader(data)
 request, err := http.NewRequest(POST_METHOD, url, body)
 if err != nil {
 log.Println("http.NewRequest,[err=%s][url=%s]", err, url)
 return []byte(""), err
 }
 request.Header.Set("Connection", "Keep-Alive")
 var resp *http.Response
 resp, err = http.DefaultClient.Do(request)
 if err != nil {
 log.Println("http.Do failed,[err=%s][url=%s]", err, url)
 return []byte(""), err
 }
 defer resp.Body.Close()
 b, err := ioutil.ReadAll(resp.Body)
 if err != nil {
 log.Println("http.Do failed,[err=%s][url=%s]", err, url)
 }
 return b, err
}

func newfileUploadRequest(uri string, params map[string]string, paramName, path string) (*http.Request, error) {
 file, err := os.Open(path)
 if err != nil {
 return nil, err
 }
 defer file.Close()
  body := &bytes.Buffer{}
 writer := multipart.NewWriter(body)
 part, err := writer.CreateFormFile(paramName, path)
 if err != nil {
 return nil, err
 }
 _, err = io.Copy(part, file)
 for key, val := range params {
 _ = writer.WriteField(key, val)
 }
 err = writer.Close()
 if err != nil {
 return nil, err
 }
 request, err := http.NewRequest("POST", uri, body)
 request.Header.Set("Content-Type", writer.FormDataContentType())
 return request, err
}

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