Go - Server

 package main

import (

"fmt"

"net/http"

)

func handler(w http.ResponseWriter, r *http.Request){

//documentwrite

w.Write([]byte("<h1>Hello server</h1>")) //utf-8

fmt.Println(r.Method)//GET; POST: curl -X POST localhost:3000

}

func main(){

//Mux

mux := http.NewServeMux()

//request , callback

mux.HandleFunc("/",handler)//指定該路徑(router)"/", registers此路徑func

//resume

http.ListenAndServe("localhost:3000",mux)

}