go http 传递json数据

上篇博文中简单介绍了Go HTTP的Server 和Client。本文介绍如何在HTTP中传递json格式的数据。

Server

package ?mainimport ( ???????"encoding/json" ???????"fmt" ???????"html" ???????"io/ioutil" ???????"log" ???????"net/http")type Cmd struct { ???????ReqType int ???????FileName string}func main() { ???????http.HandleFunc("/bar", func (w http.ResponseWriter, r *http.Request){ ???????????????fmt.Fprintf(w, "Hello, %q", html.EscapeString(r.URL.Path)) ???????????????if r.Method == "POST" { ???????????????????????b, err := ioutil.ReadAll(r.Body) ???????????????????????if err != nil { ???????????????????????????????log.Println("Read failed:", err) ???????????????????????} ???????????????????????defer r.Body.Close() ???????????????????????cmd := &Cmd{} ???????????????????????err = json.Unmarshal(b, cmd) ???????????????????????if err != nil { ???????????????????????????????log.Println("json format error:", err) ???????????????????????} ???????????????????????log.Println("cmd:", cmd) ???????????????} else { ???????????????????????log.Println("ONly support Post") ???????????????????????fmt.Fprintf(w, "Only support post") ???????????????} ???????}) ???????log.Fatal(http.ListenAndServe(":8080", nil))}

接收数据，进行json解码。

Client

package mainimport ( ???????"bytes" ???????"io/ioutil" ???????"log" ???????"net/http")func main() { ???????url := "http://127.0.0.1:8080/bar" ???????contentType := "application/json;charset=utf-8" ???????b := []byte("Hello, Server") ???????body := bytes.NewBuffer(b) ???????resp, err := http.Post(url, contentType, body) ???????if err != nil { ???????????????log.Println("Post failed:", err) ???????????????return ???????} ???????defer resp.Body.Close() ???????content, err := ioutil.ReadAll(resp.Body) ???????if err != nil { ???????????????log.Println("Read failed:", err) ???????????????return ???????} ???????log.Println("content:", string(content))}

将要发送的数据转为json格式再发送。

参考

http://www.01happy.com/golang-http-client-get-and-post/
http://blog.csdn.net/typ2004/article/details/38669949