golang搭建一个简单的web服务器

 package main

 import (
     "io/ioutil"
     "log"
     "net/http"
 )

 func main() {
     http.HandleFunc("/", ShowIndex)
     log.Fatal(http.ListenAndServe("localhost:8000", nil))
 }

 func ShowIndex(w http.ResponseWriter, r *http.Request) {
     content, _ := ioutil.ReadFile("./index.html")
     w.Write(content)
 }
 //在浏览器上输入 localhost:8000 就可以显示 index.html