Golang服务端接收get和post请求并处理

网上抄的，顺便整合了一下。

package main

import (
	"encoding/json"
	"fmt"
	"io/ioutil"
	"log"
	"net/http"
)

// Get ：接收GET请求
func Get(writer http.ResponseWriter , request *http.Request) {

	query := request.URL.Query()

	// 第一种方式
	// id := query["id"][0]

	// 第二种方式

	id := query.Get("id")
	name:= query.Get("name")

	if id == `` {
		fmt.Fprintf(writer,`id missing`)
	} else if name == `` {
		fmt.Fprintf(writer,`name missing`)
	}else {
		log.Printf("GET: id=%s\n", id)
		log.Printf("GET: name=%s\n", name)

		//fmt.Fprintf(writer, `{"code":0}`)
		fmt.Fprintf(writer, `Success!`)
	}

}

// Post ：接收application/x-www-form-urlencoded类型的POST请求
func Post(writer http.ResponseWriter, request *http.Request) {
	err := request.ParseForm()
	if err != nil {
		return 
	}

	// 第一种方式
	// username := request.Form["username"][0]
	// password := request.Form["password"][0]

	// 第二种方式
	username := request.Form.Get("username")
	password := request.Form.Get("password")

	if username == ``{
		fmt.Fprintf(writer,`username missing`)
	} else if password == ``{
		fmt.Fprintf(writer,`password missing`)
	} else {
		fmt.Printf("POST form-urlencoded: username=%s, password=%s\n", username, password)
		//fmt.Fprintf(writer, `{"code":0}`)
		fmt.Fprintf(writer,`Success!`)
	}
}

//处理 application/json 请求
//思路是这样的：
//1.先将 json 转成 struct。
//2.然后 json.Unmarshal() 即可。
//AutoGenerated 结构体
type AutoGenerated struct {
	Resultcode string `json:"resultcode"`
	Reason  string `json:"reason"`
	Result  struct {
		Province string `json:"province"`
		City  string `json:"city"`
		Areacode string `json:"areacode"`
		Zip  string `json:"zip"`
		Company string `json:"company"`
		Card  string `json:"card"`
	} `json:"result"`
}

// PostJson : 处理 application/json 请求
func PostJson(w http.ResponseWriter, r *http.Request ) {

	body ,err := ioutil.ReadAll(r.Body)
	if err != nil {
		log.Println( err)
	}
	log.Printf("%s",body)

	var data AutoGenerated
	json.Unmarshal([]byte(body),&data)

	//Json结构返回
	json,_ := json.Marshal(data)
	w.Write(json)

}

func main() {

	http.HandleFunc("/get", Get)
	http.HandleFunc("/post", Post)
	http.HandleFunc("/PostJson",PostJson)
	log.Println("Running at port 9999 ...")
	err := http.ListenAndServe(":9999", nil)
	if err != nil {
		log.Fatal("ListenAndServe: ", err.Error())
	}
}