http.Handle("/", http.FileServer(http.Dir("./")))  //把当前文件目录作为共享目录
http.ListenAndServe(":8080", nil)

func GetIntranetIp() (r []string) {
  addrs, err := net.InterfaceAddrs()
  if err != nil {
    log.Fatal(err)
  }
  for _, address := range addrs {
    if ipnet, ok := address.(*net.IPNet); ok && !ipnet.IP.IsLoopback() {
      if ipnet.IP.To4() != nil {
        r = append(r, ipnet.IP.String())
      }
    }
  }
  return
}

loclstr := fmt.Sprintf("http://%s:8080", ip地址)
cmd := exec.Command("cmd", "/C", "start "+loclstr)
cmd.Run()

package main

import (
  "fmt"
  "log"
  "net"
  "net/http"
  "os/exec"
  "time"
)

func main() {
  address := GetIntranetIp()
  fmt.Println("本机ip地址列表：")
  for _, item := range address {
    fmt.Println(item)
  }
  http.Handle("/", http.FileServer(http.Dir("./")))
  fmt.Printf("蕊蕊老师文件共享服务开启，监听8080端口\n请使用浏览器打开:http://ip地址:8080,eg:http://%s:8080\n请不要关闭此程序，祝使用愉快\n", address[0])
  go func() {
    time.Sleep(2000)
    loclstr := fmt.Sprintf("http://%s:8080", address[0])
    cmd := exec.Command("cmd", "/C", "start "+loclstr)
    cmd.Run()
  }()
  if err := http.ListenAndServe(":8080", nil); err != nil {
    fmt.Println("err:", err)
  }
}

func GetIntranetIp() (r []string) {
  addrs, err := net.InterfaceAddrs()
  if err != nil {
    log.Fatal(err)
  }
  for _, address := range addrs {
    if ipnet, ok := address.(*net.IPNet); ok && !ipnet.IP.IsLoopback() {
      if ipnet.IP.To4() != nil {
        r = append(r, ipnet.IP.String())
      }
    }
  }
  return
}