golang 构建简单的服务器,和静态文件

webtest.go

package main

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

func Hello(w http.ResponseWriter, r *http.Request) {
	io.WriteString(w, "hellow world!")
}

func main() {

	// ServeHTTP fun
	http.HandleFunc("/", Hello)

	// 静态文件 os 绝对路径
	wd, err := os.Getwd() // 当前路径
	if err != nil {
		log.Fatal(err)
	}

	// 前缀去除 ;列出dir
	http.Handle("/static/",
		http.StripPrefix("/static/",
			http.FileServer(http.Dir(wd))))

	err = http.ListenAndServe(":4000", nil)
	if err != nil {
		log.Fatal(err)
	}
}