go静态服务器

package main

import (
   "fmt"
   "net/http"
   "os/exec"
   "runtime"
)

func open(url string) error {

   var cmd string

   var args []string

   switch runtime.GOOS {

   case "windows":

      cmd = "cmd"

      args = []string{"/c", "start"}

   case "darwin":

      cmd = "open"

   default: // "linux", "freebsd", "openbsd", "netbsd"

      cmd = "xdg-open"

   }

   args = append(args, url)

   return exec.Command(cmd, args...).Start()

}

func main() {
   fs := http.FileServer(http.Dir("wwwroot/"))
   http.Handle("/", http.StripPrefix("/", fs))

   fmt.Println("服务地址：http://127.0.0.1:8080")

   open("http://127.0.0.1:8080");

   if err := http.ListenAndServe(":8080", nil); err != nil {
      fmt.Println("服务无法启动，8080端口被占用")
   }
}