resp, err := http.Get("http://example.com/")
...
 
//参数 详解
//1. 请求的目标 URL 
//2. 将要 POST 数据的资源类型(MIMEType)
//3. 数据的比特流([]byte形式)
resp, err := http.Post("http://example.com/upload", "image/jpeg", &buf)
...
 
//参数 详解
//1. 请求的目标 URL 
//2. 提交的参数值 可以使用 url.Values 或者 使用 strings.NewReader("key=value&id=123")
// 注意，也可以 url.Value 和 strings.NewReader 并用 strings.NewReader(url.Values{}.Encode())
resp, err := http.PostForm("http://example.com/form",
 url.Values{"key": {"Value"}, "id": {"123"}})

 resp, err := http.Get("http://example.com/")
 if err != nil {
 // handle error
 }
 defer resp.Body.Close()
 body, err := ioutil.ReadAll(resp.Body)
 
 if err != nil {
 // handle error
 }
 
 fmt.Println(string(body))

 resp, err := http.Post("http://example.com/upload", "image/jpeg", &buf)
 if err != nil {
 // handle error
 }
 defer resp.Body.Close()
 body, err := ioutil.ReadAll(resp.Body)
 
 if err != nil {
 // handle error
 }
 
 fmt.Println(string(body))

 postValue := url.Values{
 "email": {"xx@xx.com"},
 "password": {"123456"},
 }
 
 resp, err := http.PostForm("http://example.com/login", postValue)
 if err != nil {
 // handle error
 }
 
 defer resp.Body.Close()
 
 body, err := ioutil.ReadAll(resp.Body)
 
 if err != nil {
 // handle error
 }
 
 fmt.Println(string(body))

 postValue := url.Values{
 "email": {"xx@xx.com"},
 "password": {"123456"},
 }
 
 postString := postValue.Encode()
 
 req, err := http.NewRequest("POST","http://example.com/login_ajax", strings.NewReader(postString))
 if err != nil {
 // handle error
 }
 
 // 表单方式(必须)
 req.Header.Add("Content-Type", "application/x-www-form-urlencoded")
 //AJAX 方式请求
 req.Header.Add("x-requested-with", "XMLHttpRequest")
 
 client := &http.Client{}
 resp, err := client.Do(req)
 if err != nil {
 // handle error
 }
 
 defer resp.Body.Close()
 
 body, err := ioutil.ReadAll(resp.Body)
 if err != nil {
 // handle error
 }
 
 fmt.Println(string(body))