golang ---获取IP Address

package main

import (

	"fmt"

	"log"

	"os/exec"

	"regexp"

)

func main() {

	ww, err := exec.Command("CMD", "/C", " ping 126.com").Output()

	if err != nil {

		log.Fatal(err.Error())

	}

	fmt.Println(string(ww))

	ww, err = exec.Command("CMD", "/C", " ipconfig").Output()

	if err != nil {

		log.Fatal(err.Error())

	}

	//	fmt.Println(string(ww))

	reg := regexp.MustCompile(`\d+\.\d+\.\d+\.\d+`)

	fmt.Printf("%q\n", reg.FindAllString(string(ww), -1)[0])

}

　　实例2：

package main

import (

	"fmt"

	"net"

	"strings"

)

func main() {

	conn, err := net.Dial("udp", "google.com:80")

	if err != nil {

		fmt.Println(err.Error())

		return

	}

	defer conn.Close()

	fmt.Println(strings.Split(conn.LocalAddr().String(), ":")[0])

}