Golang implementation of HTTP GET and post

This is a creation in Article, where the information may have evolved or changed.

Golang to request a remote Web page, it can be implemented using the method provided by the client in the Net/http package. See the official website There are some examples, there are not too comprehensive examples, so I tidied up a bit.

GET request

Get requests can be directly HTTP. The Get method is very simple.

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funchttpGet() {     resp, err := http.Get("http://www.01happy.com/demo/accept.php?id=1")     iferr != nil {         // handle error     }     deferresp.Body.Close()     body, err := ioutil.ReadAll(resp.Body)     iferr != nil {         // handle error     }     fmt.Println(string(body)) }

POST request

One is to use HTTP. Post mode

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funchttpPost() {     resp, err := http.Post("http://www.01happy.com/demo/accept.php",         "application/x-www-form-urlencoded",         strings.NewReader("name=cjb"))     iferr != nil {         fmt.Println(err)     }     deferresp.Body.Close()     body, err := ioutil.ReadAll(resp.Body)     iferr != nil {         // handle error     }     fmt.Println(string(body)) }

Tips: Using this method, the second parameter is set to "application/x-www-form-urlencoded", otherwise the post parameter cannot be passed.

One is to use HTTP. Postform method

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funchttpPostForm() {     resp, err := http.PostForm("http://www.01happy.com/demo/accept.php",         url.Values{"key": {"Value"}, "id": {"123"}})     iferr != nil {         // handle error     }     deferresp.Body.Close()     body, err := ioutil.ReadAll(resp.Body)     iferr != nil {         // handle error     }     fmt.Println(string(body)) }

A complex request

Sometimes you need to set the header parameters, cookies and other data at the time of the request, you can use HTTP. Do method.

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funchttpDo() {     client := &http.Client{}     req, err := http.NewRequest("POST", "http://www.01happy.com/demo/accept.php", strings.NewReader("name=cjb"))     iferr != nil {         // handle error     }     req.Header.Set("Content-Type", "application/x-www-form-urlencoded")     req.Header.Set("Cookie", "name=anny")     resp, err := client.Do(req)     deferresp.Body.Close()     body, err := ioutil.ReadAll(resp.Body)     iferr != nil {         // handle error     }     fmt.Println(string(body)) }

With the above POST request, you must set Content-type as the Application/x-www-form-urlencoded,post parameter to pass normally.

If you want to initiate a head request can be directly using the HTTP client head method, relatively simple, here is no longer explained.