Java 网络通信 — 使用线程池搭建TCP BIO通信服务器

绝地灬酷狼 2022-06-10 12:27 179阅读 0赞

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