单片机通过TCPIP向计算机传输数据。我用java怎么写一个接受的小程序！

package com.cep.usercenter.sys

import java.io.BufferedReader

import java.io.InputStreamReader

import java.net.ServerSocket

import java.net.Socket

import java.util.Date

public class RunUserCenterSystem {

public static void main(String[] args) {

try {

ServerSocket ss = new ServerSocket(51818)

while (true) {

Socket socket = ss.accept()

BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()))

String line = in.readLine()

if("stop".trim().equalsIgnoreCase(line)){

if(ctx != null){

ctx.stop()

ctx.close()

System.exit(0)

}

}else{

System.out.println("接收的数据为: "+line)

}

in.close()

socket.close()

}

} catch (Exception e) {

}

}

}

使用如下命令实现网络断开 *** 作

ipconfig /release

public static void main(String[] args) {

try {

//通过process方式发起windows命令行命令执行

String cmd = "ipconfig /release"

Process p = Runtime.getRuntime().exec(cmd)

p.waitFor()

} catch (Exception e) {

e.printStackTrace()

}

}

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