java socket多线程通讯demo

来源：互联网发布：青岛房价知乎编辑：程序博客网时间：2024/04/29 07:55

package com.yws.echo_socket;import java.io.*;import java.net.Inet4Address;import java.net.ServerSocket;import java.net.Socket;import java.util.concurrent.ExecutorService;import java.util.concurrent.Executors;public class EchoServer {    private static ExecutorService executorService = Executors.newFixedThreadPool(5);    public EchoServer(int port) throws IOException {        ServerSocket serverSocket = new ServerSocket(port);        String address = Inet4Address.getLocalHost().getHostAddress();        System.out.println("starting echo server on " + address + ":" + port);        while (true) {            Socket socket = serverSocket.accept();            executorService.execute(new Runnable() {                @Override                public void run() {                    try {                        doaccept(socket);                    } catch (IOException e) {                        e.printStackTrace();                    }                }            });        }    }    private void doaccept(Socket socket) throws IOException {        System.err.println(Thread.currentThread().getName() + " accept connection from client");        InputStream in = socket.getInputStream();        OutputStream out = socket.getOutputStream();        String line;        int len;        byte[] buffer = new byte[1024];        while ((len = in.read(buffer)) != -1) {            byte[] data = new byte[len];            System.arraycopy(buffer, 0, data, 0, len);            System.out.print(new String(data, 0, len));            out.write(buffer, 0, len);            out.flush();        }        /*        BufferedReader is = new BufferedReader(new InputStreamReader(in));        BufferedWriter os = new BufferedWriter(new OutputStreamWriter(out));        while ((line = is.readLine()) != null) {            os.write("来自server" + line);            os.flush();            System.out.println("来自server" + line);        }        os.close();        is.close();        */        System.err.println(Thread.currentThread().getName() + " closing connection with client");        in.close();        out.close();        socket.close();    }    public static void main(String[] args) throws IOException {        int port = 4444;        if (args.length == 2) {            port = Integer.parseInt(args[1]);        }        new EchoServer(port);    }}

package com.yws.echo_socket;import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;import java.io.PrintWriter;import java.net.Socket;import java.util.concurrent.ExecutorService;import java.util.concurrent.Executors;public class EchoClient {    private static  boolean isacceptData=true;    private static   ExecutorService executorService= Executors.newFixedThreadPool(2);    public EchoClient(String ip,int port)    {        try {            Socket socket = new Socket(ip, port);            System.out.println(ip+":"+port);            sendData(socket);        } catch (Exception e) {            e.printStackTrace();        }    }    //ssh -L 192.168.0.102:9999:192.168.1.140:4444 localhost    public static void main(String args[]) {        int  port=9999;        String ip="192.168.0.102";        if(args.length==3)        {            ip=args[1];            port=Integer.parseInt(args[2]);        }        new EchoClient(ip,port);    }    public  void sendData(Socket socket) throws InterruptedException, IOException {        executorService.execute(new Runnable() {            @Override            public void run() {                try {                    for(int i=1;i<=15;i++)                    {                        writedata(socket, "data"+i);                    }                    isacceptData=false;                } catch (IOException e) {                    e.printStackTrace();                }            }        });        executorService.execute(new Runnable() {            @Override            public void run() {                try {                    readdata(socket);                } catch (IOException e) {                    e.printStackTrace();                }            }        });      // executorService.awaitTermination(2, TimeUnit.SECONDS);       // System.out.println(Thread.activeCount());       // socket.close();        //executorService.shutdown();    }    private void writedata(Socket socket, String data) throws IOException {        PrintWriter os = new PrintWriter(socket.getOutputStream());        os.println(data);        os.flush();        System.out.println(Thread.currentThread().getName()+" write:" + data);        data="数据";        os.println(data);        os.flush();        System.out.println(Thread.currentThread().getName()+" write:" + data);    }    private void readdata(Socket socket) throws IOException {        BufferedReader is = new BufferedReader(new InputStreamReader(socket.getInputStream()));        String line;        while((line=is.readLine())!=null && isacceptData)        {            System.out.println(Thread.currentThread().getName()+" read from Server:" + line);        }        socket.close();        executorService.shutdown();    }}

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