go自定义端口监听停用-------解决端口被占用的问题

代码

package main

import (
	"fmt"
	"log"
	"net"
	"os/exec"
	"strconv"
	"strings"
)

func getSelect(beign int, end int) int {
   
	var num int
	for {
   
		_, err := fmt.Scan(&num)
		if err != nil {
   
			fmt.Println("输入错误，请重新输入！")
			continue
		}
		if num < beign || num > end {
   
			fmt.Println("输入不在指定范围(1-10)之内，请重新输入！")
			continue
		}
		break
	}
	return num
}

func main() {
   
	for {
   
		var port int
		for {
   
			fmt.Print("请输入要检测的端口号:")
			_, err := fmt.Scanln(&port)
			if err != nil {
   
				fmt.Println("输入错误，请重新输入！")
				continue
			}
			break
		}

		// 检测端口是否被占用
		if isPortInUse(port) {
   
			fmt.Printf("端口号:%d 该端口号已经被占用\n", port)
			fmt.Print("请选择是否停用(1.是 2.否):")
			if getSelect(1, 2) == 1 {
   
				stopProcessOnPort(port)
			}
			fmt.Scanln()

		} else {
   
			fmt.Printf("端口号:%d没有被占用\n", port)
		}
		fmt.Printf("\n\n")

	}
}

// 检测端口是否被占用
func isPortInUse(port int) bool {
   
	listener, err := net.Listen("tcp", ":"+strconv.Itoa(port))
	if err != nil {
   
		return true
	}
	defer listener.Close()
	return false
}

// 停止占用指定端口的进程
func stopProcessOnPort(port int) {
   
	cmd := exec.Command("netstat", "-ano")
	output, err := cmd.Output()
	if err != nil {
   
		log.Fatal(err)
	}

	lines := strings.Split(string(output), "\n")
	for _, line := range lines {
   
		fields := strings.Fields(line)
		if len(fields) >= 4 && strings.HasSuffix(fields[1], ":"+strconv.Itoa(port)) {
   
			pid, err := strconv.Atoi(fields[4])
			if err != nil {
   
				log.Println("无法获取该端口号的id:", err)
				return
			}

			killCmd := exec.Command("taskkill", "/F", "/PID", strconv.Itoa(pid))
			if err := killCmd.Run(); err != nil {
   
				log.Println("终止该进程失败:", err)
				return
			}

			fmt.Printf("进程号 %d 端口号 %d 已经被停止\n", pid, port)
			return
		}
	}
}

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