golang几种post请求方式
get请求
get请求可以直接http.Get方法,非常简单。
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func httpGet() { resp, err := http.Get( "http://www.01happy.com/demo/accept.php?id=1" ) if err != nil { // handle error } defer resp.Body.Close() body, err := ioutil.ReadAll(resp.Body) if err != nil { // handle error } fmt.Println(string(body)) } |
post请求
一种是使用http.Post方式
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func httpPost() { resp, err := http.Post( "http://www.01happy.com/demo/accept.php" , "application/x-www-form-urlencoded" , strings.NewReader( "name=cjb" )) if err != nil { fmt.Println(err) } defer resp.Body.Close() body, err := ioutil.ReadAll(resp.Body) if err != nil { // handle error } fmt.Println(string(body)) } |
Tips:使用这个方法的话,第二个参数要设置成”application/x-www-form-urlencoded”,否则post参数无法传递。
一种是使用http.PostForm方法
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func httpPostForm() { resp, err := http.PostForm( "http://www.01happy.com/demo/accept.php" , url.Values{ "key" : { "Value" }, "id" : { "123" }}) if err != nil { // handle error } defer resp.Body.Close() body, err := ioutil.ReadAll(resp.Body) if err != nil { // handle error } fmt.Println(string(body)) } |
复杂的请求
有时需要在请求的时候设置头参数、cookie之类的数据,就可以使用http.Do方法。
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func httpDo() { client := &http.Client{} req, err := http.NewRequest( "POST" , "http://www.01happy.com/demo/accept.php" , strings.NewReader( "name=cjb" )) if err != nil { // handle error } req.Header.Set( "Content-Type" , "application/x-www-form-urlencoded" ) req.Header.Set( "Cookie" , "name=anny" ) resp, err := client.Do(req) defer resp.Body.Close() body, err := ioutil.ReadAll(resp.Body) if err != nil { // handle error } fmt.Println(string(body)) } |
同上面的post请求,必须要设定Content-Type为application/x-www-form-urlencoded,post参数才可正常传递。
如果要发起head请求可以直接使用http client的head方法,比较简单,这里就不再说明。
用golang进行http请求类型多了,总结备忘一下。
1.普通的post\get请求
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: }
2. body全部二进制数据流进行post
//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 }
3. 模拟web表单文件上传进行post
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 }