Java 网络通信 — 使用线程池搭建TCP BIO通信服务器

服务端使用一个线程池大小为5个线程去监听socket

package top.yuyufeng.test;

import org.junit.Test;

import java.io.*;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.atomic.AtomicInteger;

/**
 * 服务端
 * created by yuyufeng on 2017/8/18.
 */
public class TestTcpServer {
    private static ExecutorService executor = Executors.newFixedThreadPool(5);
    private static AtomicInteger count = new AtomicInteger();

    // 服务端
    public static void main(String[] args) throws ClassNotFoundException {
        ServerSocket ss = null;
        Socket s = null;
        try {
            ss = new ServerSocket(8989);
            System.out.println("服务端已经启动...");
            while (true) {
                int id = count.getAndAdd(1);
                executor.execute(new ServerTask(id, ss.accept()));
                System.out.println("执行一次响应.." + id);
            }
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (ss != null) {
                try {
                    ss.close();
                } catch (IOException ioe) {
                    ioe.printStackTrace();
                }
            }
        }
    }
}

class ServerTask implements Runnable {
    private Integer id;//任务标记
    private Socket socket;

    public ServerTask(Integer id, Socket socket) {
        this.id = id;
        this.socket = socket;
    }

    public void run() {
        ObjectOutputStream os = null;
        ObjectInputStream is = null;
        try {
            is = new ObjectInputStream(socket.getInputStream());
            //读取第一部分数据
            TransportObject transportObject = (TransportObject) is.readObject();
            System.out.println(transportObject.toString() + "任务标记:" + id);
            //读取第二部分数据
            transportObject = (TransportObject) is.readObject();
            System.out.println(transportObject.toString() + "任务标记:" + id);
            os = new ObjectOutputStream(socket.getOutputStream());
            os.writeObject(new TransportObject(1, "我是客户端！"));
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        } catch (IOException e) {
            e.printStackTrace();
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        } finally {
            if (os != null) {
                try {
                    os.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            if (is != null) {
                try {
                    is.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            if (socket != null) {
                try {
                    socket.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }

        }
    }
}

客户端启动6个线程去请求服务器

package top.yuyufeng.test;

import org.junit.Test;

import java.io.*;
import java.net.InetAddress;
import java.net.ServerSocket;
import java.net.Socket;
import java.net.UnknownHostException;
import java.util.Random;

/**
 * 客户端
 * created by yuyufeng on 2017/8/18.
 */
public class TestTcpClient {

    public static void main(String[] args) throws ClassNotFoundException, InterruptedException {
//        send();
        for (int i = 0; i < 6; i++) {
            new Thread() {
                @Override
                public void run() {
                    while (true) {
                        try {
                            send();
                            Thread.sleep(100);
                        } catch (ClassNotFoundException e) {
                            e.printStackTrace();
                        } catch (InterruptedException e) {
                            e.printStackTrace();
                        }
                    }
                }
            }.start();
        }


    }

    private static void send() throws ClassNotFoundException {
        Socket socket = null;
        ObjectOutputStream os = null;
        ObjectInputStream is = null;
        try {
            socket = new Socket(InetAddress.getByName("127.0.0.1"), 8989);
            os = new ObjectOutputStream(socket.getOutputStream());
            //发送两次数据
            os.writeObject(new TransportObject(2, "我是客户端1！"));
            os.writeObject(new TransportObject(3, "我是客户端2！"));
            // shutdownOutput():执行此方法，显示的告诉服务端发送完毕
            socket.shutdownOutput();
            //阻塞等待服务器响应
            is = new ObjectInputStream(socket.getInputStream());
            TransportObject transportObject = (TransportObject) is.readObject();
            System.out.println(transportObject.toString());
        } catch (UnknownHostException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (is != null) {
                try {
                    is.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            if (os != null) {
                try {
                    os.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            if (socket != null) {
                try {
                    socket.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }

}

执行结果（部分）

服务端已经启动...
执行一次响应..0
执行一次响应..1
执行一次响应..2
执行一次响应..3
执行一次响应..4
执行一次响应..5
TransportObject{id=2, content='我是客户端1！', date=Fri Aug 18 21:45:45 CST 2017}任务标记:3
TransportObject{id=2, content='我是客户端1！', date=Fri Aug 18 21:45:45 CST 2017}任务标记:2
TransportObject{id=3, content='我是客户端2！', date=Fri Aug 18 21:45:45 CST 2017}任务标记:3
TransportObject{id=3, content='我是客户端2！', date=Fri Aug 18 21:45:45 CST 2017}任务标记:2
TransportObject{id=2, content='我是客户端1！', date=Fri Aug 18 21:45:45 CST 2017}任务标记:4
TransportObject{id=3, content='我是客户端2！', date=Fri Aug 18 21:45:45 CST 2017}任务标记:4
TransportObject{id=2, content='我是客户端1！', date=Fri Aug 18 21:45:45 CST 2017}任务标记:0
TransportObject{id=3, content='我是客户端2！', date=Fri Aug 18 21:45:45 CST 2017}任务标记:0
TransportObject{id=2, content='我是客户端1！', date=Fri Aug 18 21:45:45 CST 2017}任务标记:1
TransportObject{id=3, content='我是客户端2！', date=Fri Aug 18 21:45:45 CST 2017}任务标记:1
执行一次响应..6
执行一次响应..7
执行一次响应..8
执行一次响应..9
执行一次响应..10
TransportObject{id=2, content='我是客户端1！', date=Fri Aug 18 21:45:45 CST 2017}任务标记:5
TransportObject{id=2, content='我是客户端1！', date=Fri Aug 18 21:45:45 CST 2017}任务标记:8
TransportObject{id=3, content='我是客户端2！', date=Fri Aug 18 21:45:45 CST 2017}任务标记:5
TransportObject{id=3, content='我是客户端2！', date=Fri Aug 18 21:45:45 CST 2017}任务标记:8
TransportObject{id=2, content='我是客户端1！', date=Fri Aug 18 21:45:45 CST 2017}任务标记:7
TransportObject{id=2, content='我是客户端1！', date=Fri Aug 18 21:45:45 CST 2017}任务标记:6
TransportObject{id=3, content='我是客户端2！', date=Fri Aug 18 21:45:45 CST 2017}任务标记:7
TransportObject{id=3, content='我是客户端2！', date=Fri Aug 18 21:45:45 CST 2017}任务标记:6
TransportObject{id=2, content='我是客户端1！', date=Fri Aug 18 21:45:45 CST 2017}任务标记:9
TransportObject{id=3, content='我是客户端2！', date=Fri Aug 18 21:45:45 CST 2017}任务标记:9
执行一次响应..11
执行一次响应..12
执行一次响应..13
执行一次响应..14
执行一次响应..15
TransportObject{id=2, content='我是客户端1！', date=Fri Aug 18 21:45:45 CST 2017}任务标记:10
TransportObject{id=2, content='我是客户端1！', date=Fri Aug 18 21:45:46 CST 2017}任务标记:11
TransportObject{id=2, content='我是客户端1！', date=Fri Aug 18 21:45:46 CST 2017}任务标记:12
TransportObject{id=3, content='我是客户端2！', date=Fri Aug 18 21:45:45 CST 2017}任务标记:10
TransportObject{id=3, content='我是客户端2！', date=Fri Aug 18 21:45:46 CST 2017}任务标记:11
TransportObject{id=3, content='我是客户端2！', date=Fri Aug 18 21:45:46 CST 2017}任务标记:12
TransportObject{id=2, content='我是客户端1！', date=Fri Aug 18 21:45:46 CST 2017}任务标记:13
TransportObject{id=3, content='我是客户端2！', date=Fri Aug 18 21:45:46 CST 2017}任务标记:13
TransportObject{id=2, content='我是客户端1！', date=Fri Aug 18 21:45:46 CST 2017}任务标记:14
TransportObject{id=3, content='我是客户端2！', date=Fri Aug 18 21:45:46 CST 2017}任务标记:14
执行一次响应..16
执行一次响应..17
执行一次响应..18
执行一次响应..19
执行一次响应..20
TransportObject{id=2, content='我是客户端1！', date=Fri Aug 18 21:45:46 CST 2017}任务标记:15
TransportObject{id=2, content='我是客户端1！', date=Fri Aug 18 21:45:47 CST 2017}任务标记:16
TransportObject{id=2, content='我是客户端1！', date=Fri Aug 18 21:45:47 CST 2017}任务标记:18
TransportObject{id=3, content='我是客户端2！', date=Fri Aug 18 21:45:47 CST 2017}任务标记:18
TransportObject{id=2, content='我是客户端1！', date=Fri Aug 18 21:45:47 CST 2017}任务标记:17
TransportObject{id=3, content='我是客户端2！', date=Fri Aug 18 21:45:47 CST 2017}任务标记:16
TransportObject{id=3, content='我是客户端2！', date=Fri Aug 18 21:45:46 CST 2017}任务标记:15
TransportObject{id=3, content='我是客户端2！', date=Fri Aug 18 21:45:47 CST 2017}任务标记:17
TransportObject{id=2, content='我是客户端1！', date=Fri Aug 18 21:45:47 CST 2017}任务标记:19
TransportObject{id=3, content='我是客户端2！', date=Fri Aug 18 21:45:47 CST 2017}任务标记:19
执行一次响应..21
执行一次响应..22
执行一次响应..23
执行一次响应..24
执行一次响应..25
TransportObject{id=2, content='我是客户端1！', date=Fri Aug 18 21:45:48 CST 2017}任务标记:21
TransportObject{id=2, content='我是客户端1！', date=Fri Aug 18 21:45:47 CST 2017}任务标记:20
TransportObject{id=3, content='我是客户端2！', date=Fri Aug 18 21:45:48 CST 2017}任务标记:21
TransportObject{id=2, content='我是客户端1！', date=Fri Aug 18 21:45:48 CST 2017}任务标记:22
TransportObject{id=3, content='我是客户端2！', date=Fri Aug 18 21:45:47 CST 2017}任务标记:20
TransportObject{id=3, content='我是客户端2！', date=Fri Aug 18 21:45:48 CST 2017}任务标记:22
TransportObject{id=2, content='我是客户端1！', date=Fri Aug 18 21:45:48 CST 2017}任务标记:23
TransportObject{id=3, content='我是客户端2！', date=Fri Aug 18 21:45:48 CST 2017}任务标记:23
TransportObject{id=2, content='我是客户端1！', date=Fri Aug 18 21:45:48 CST 2017}任务标记:24
TransportObject{id=3, content='我是客户端2！', date=Fri Aug 18 21:45:48 CST 2017}任务标记:24
执行一次响应..26
执行一次响应..27
执行一次响应..28
执行一次响应..29
执行一次响应..30
TransportObject{id=2, content='我是客户端1！', date=Fri Aug 18 21:45:49 CST 2017}任务标记:26
TransportObject{id=2, content='我是客户端1！', date=Fri Aug 18 21:45:49 CST 2017}任务标记:28
TransportObject{id=3, content='我是客户端2！', date=Fri Aug 18 21:45:49 CST 2017}任务标记:26
TransportObject{id=3, content='我是客户端2！', date=Fri Aug 18 21:45:49 CST 2017}任务标记:28
TransportObject{id=2, content='我是客户端1！', date=Fri Aug 18 21:45:49 CST 2017}任务标记:27
TransportObject{id=2, content='我是客户端1！', date=Fri Aug 18 21:45:48 CST 2017}任务标记:25
TransportObject{id=3, content='我是客户端2！', date=Fri Aug 18 21:45:49 CST 2017}任务标记:27
TransportObject{id=3, content='我是客户端2！', date=Fri Aug 18 21:45:48 CST 2017}任务标记:25
TransportObject{id=2, content='我是客户端1！', date=Fri Aug 18 21:45:49 CST 2017}任务标记:29
TransportObject{id=3, content='我是客户端2！', date=Fri Aug 18 21:45:49 CST 2017}任务标记:29
执行一次响应..31
执行一次响应..32
执行一次响应..33
执行一次响应..34
执行一次响应..35
TransportObject{id=2, content='我是客户端1！', date=Fri Aug 18 21:45:49 CST 2017}任务标记:30
TransportObject{id=2, content='我是客户端1！', date=Fri Aug 18 21:45:50 CST 2017}任务标记:31
TransportObject{id=2, content='我是客户端1！', date=Fri Aug 18 21:45:50 CST 2017}任务标记:32
TransportObject{id=3, content='我是客户端2！', date=Fri Aug 18 21:45:50 CST 2017}任务标记:31
TransportObject{id=3, content='我是客户端2！', date=Fri Aug 18 21:45:49 CST 2017}任务标记:30
TransportObject{id=3, content='我是客户端2！', date=Fri Aug 18 21:45:50 CST 2017}任务标记:32
TransportObject{id=2, content='我是客户端1！', date=Fri Aug 18 21:45:50 CST 2017}任务标记:33
TransportObject{id=3, content='我是客户端2！', date=Fri Aug 18 21:45:50 CST 2017}任务标记:33
TransportObject{id=2, content='我是客户端1！', date=Fri Aug 18 21:45:50 CST 2017}任务标记:34
TransportObject{id=3, content='我是客户端2！', date=Fri Aug 18 21:45:50 CST 2017}任务标记:34
执行一次响应..36
执行一次响应..37
执行一次响应..38
执行一次响应..39
执行一次响应..40
TransportObject{id=2, content='我是客户端1！', date=Fri Aug 18 21:45:51 CST 2017}任务标记:36
TransportObject{id=2, content='我是客户端1！', date=Fri Aug 18 21:45:51 CST 2017}任务标记:38
TransportObject{id=3, content='我是客户端2！', date=Fri Aug 18 21:45:51 CST 2017}任务标记:36
TransportObject{id=3, content='我是客户端2！', date=Fri Aug 18 21:45:51 CST 2017}任务标记:38
TransportObject{id=2, content='我是客户端1！', date=Fri Aug 18 21:45:51 CST 2017}任务标记:37
TransportObject{id=2, content='我是客户端1！', date=Fri Aug 18 21:45:50 CST 2017}任务标记:35
TransportObject{id=3, content='我是客户端2！', date=Fri Aug 18 21:45:50 CST 2017}任务标记:35
TransportObject{id=3, content='我是客户端2！', date=Fri Aug 18 21:45:51 CST 2017}任务标记:37
TransportObject{id=2, content='我是客户端1！', date=Fri Aug 18 21:45:51 CST 2017}任务标记:39
TransportObject{id=3, content='我是客户端2！', date=Fri Aug 18 21:45:51 CST 2017}任务标记:39
执行一次响应..41
执行一次响应..42
执行一次响应..43
执行一次响应..44
执行一次响应..45
TransportObject{id=2, content='我是客户端1！', date=Fri Aug 18 21:45:52 CST 2017}任务标记:41
TransportObject{id=2, content='我是客户端1！', date=Fri Aug 18 21:45:52 CST 2017}任务标记:42
TransportObject{id=2, content='我是客户端1！', date=Fri Aug 18 21:45:51 CST 2017}任务标记:40
TransportObject{id=3, content='我是客户端2！', date=Fri Aug 18 21:45:52 CST 2017}任务标记:42
TransportObject{id=2, content='我是客户端1！', date=Fri Aug 18 21:45:52 CST 2017}任务标记:43
TransportObject{id=3, content='我是客户端2！', date=Fri Aug 18 21:45:52 CST 2017}任务标记:43
TransportObject{id=3, content='我是客户端2！', date=Fri Aug 18 21:45:51 CST 2017}任务标记:40
TransportObject{id=3, content='我是客户端2！', date=Fri Aug 18 21:45:52 CST 2017}任务标记:41
TransportObject{id=2, content='我是客户端1！', date=Fri Aug 18 21:45:52 CST 2017}任务标记:44
TransportObject{id=3, content='我是客户端2！', date=Fri Aug 18 21:45:52 CST 2017}任务标记:44
执行一次响应..46
执行一次响应..47
执行一次响应..48
执行一次响应..49
执行一次响应..50
TransportObject{id=2, content='我是客户端1！', date=Fri Aug 18 21:45:53 CST 2017}任务标记:46
TransportObject{id=2, content='我是客户端1！', date=Fri Aug 18 21:45:52 CST 2017}任务标记:45
TransportObject{id=3, content='我是客户端2！', date=Fri Aug 18 21:45:53 CST 2017}任务标记:46