java socket保持连接_Java通过socket客户端保持连接服务端的实现

package com.thinkgem.wlw.modules.test.socketdemo;

import java.io.*;

import java.net.Socket;

/**

* @Author zhouhe

* @Date 2019/10/14 17:41

*/

public class Client extends Thread{

//定义一个Socket对象

Socket socket = null;

private static String host = "192.168.0.109";

private static int port = 777;

public Client() {

try {

//需要服务器的IP地址和端口号，才能获得正确的Socket对象

socket = new Socket(host, port);

} catch (Exception e) {

}

}

@Override

public void run() {

//客户端一连接就可以写数据个服务器了

super.run();

try {

// 读Sock里面的数据

InputStream s = socket.getInputStream();

byte[] buf = new byte[1024];

int len = 0;

while ((len = s.read(buf)) != -1) {

System.out.println(new String(buf, 0, len));

}

} catch (Exception e) {

System.out.println("socket连接断开！");

}

}

//函数入口

public static void main(String[] args) {

//需要服务器的正确的IP地址和端口号

while (true){

Client clientTest = new Client();

clientTest.start();

}

}

}