Web Socket 长连接

服务

package com.kinth.basic.timetask.job.donghuan.socket;

import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;

public class SocketServerThread  extends Thread {

	 public void run() {
		try {

			serverSocket = new ServerSocket(8080);

			while(serverSocket != null){

				//循环监听客户端的连接
				Socket socket = serverSocket.accept();

				//新建一个线程ServerSocket，并开启
				new SocketClientConnThread(socket).start(); 
} } catch (IOException e) { e.printStackTrace(); } } }

　　处理客户端消息

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.Socket;

public class SocketClientConnThread extends Thread {

	private Socket socket;

	public SocketClientConnThread(Socket socket) {
		this.socket = socket;
	}

	public void run() {
		BufferedReader is = null;
		PrintWriter os = null;
		try {
			while(socket != null){
				//接收客户端信息
				is = new BufferedReader(new InputStreamReader(socket.getInputStream(),"GB2312"));

				String str = is.readLine();
				if(str != null && !str.equals("") && !str.equals("null")){

        System.out.println(str );

					//往客户端发送信息
					os = new PrintWriter(socket.getOutputStream());//由Socket对象得到输出流，并构造PrintWriter对象

					//发送更新信息
					os.println("OK");
					os.flush();
				}else{
					Thread.sleep(3000);
					SocketUtil.close(socket, is, os);
				}
			}
		} catch (Exception e) {
			e.printStackTrace();
			SocketUtil.close(socket, is, os);
		}
	}
}

　　

测试服务

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.net.Socket;
import java.net.UnknownHostException;

/**
 * <p>
 * 基于socket通讯-客户端
 * <p>
 */
public class Client {

    public static void main(String[] args) {

        Socket socket = null;
        OutputStream os = null;
        PrintWriter pw = null;
        InputStream is = null;
        InputStreamReader isr = null;
        BufferedReader br = null;
        try {
            socket = new Socket("IP地址", 8080);
            // 获取输出流向服务端写入数据
            os = socket.getOutputStream();
            pw = new PrintWriter(os);
            pw.write("用户名：admin 密码：123");
            pw.flush();
            socket.shutdownOutput();
            // 获取输入流接受服务端返回的信息
            is = socket.getInputStream();
            isr = new InputStreamReader(is);
            br = new BufferedReader(isr);
            String message = null;
            while ((message = br.readLine()) != null) {
                System.out.println("服务器说：" + message);
            }
            socket.shutdownInput();

        } catch (UnknownHostException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                if (br != null) {
                    br.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
            try {
                if (isr != null) {
                    isr.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
            try {
                if (is != null) {
                    is.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
            if (pw != null) {
                pw.close();
            }
            try {
                if (os != null) {
                    os.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
            try {
                if (socket != null) {
                    socket.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}