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postget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
}