java socket 多线程通讯

1.目录结构

2.Server.java 代码

package de.bvb.server;

import java.net.ServerSocket;
import java.net.Socket;

import de.bvb.util.IOUtils;
import de.bvb.util.ReaderThread;
import de.bvb.util.WriterThread;

/**
 * 参考: http://www.cnblogs.com/jpwz/p/5705160.html
 */
public class Server {
    public static void main(String[] args) {
        Server server = new Server();
        server.init();
    }

    private void init() {
        ServerSocket serverSocket = null;
        Socket socket = null;
        try {
            serverSocket = new ServerSocket(9999);
            System.out.println("服务已启动...");

            while (true) {
                socket = serverSocket.accept();
                System.out.println(socket.getInetAddress().getHostAddress() + "@" + socket.getPort() + " 已连接");
                // 分别启动读写线程
                new ReaderThread(socket).start();
                new WriterThread(socket).start();
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            IOUtils.closeCloseable(serverSocket);
        }

    }
}

3.client.java 代码

package de.bvb.client;

import java.net.Socket;

import de.bvb.util.IOUtils;
import de.bvb.util.ReaderThread;
import de.bvb.util.WriterThread;

public class Client {
    public static void main(String[] args) {
        Client client = new Client();
        client.init();
    }

    private void init() {
        try {
            Socket socket = new Socket("127.0.0.1", 9999);
            System.out.println(socket.getInetAddress().getHostAddress() + "@" + socket.getLocalPort() + " 已连接上服务器");

            new ReaderThread(socket).start();
            new WriterThread(socket).start();
        } catch (Exception e) {
            e.printStackTrace();
        }

    }
}

4.util下的代码

package de.bvb.util;

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

public class ReaderThread extends Thread {
    private Socket socket;

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

    @Override
    public void run() {
        BufferedReader reader = null;
        try {
            reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
            String content;
            while (null != (content = reader.readLine())) {
                System.out.println(content);
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            IOUtils.closeCloseable(reader, socket);
        }
    }
}

package de.bvb.util;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.Socket;

public class WriterThread extends Thread {
    private Socket socket;

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

    @Override
    public void run() {
        BufferedWriter writer = null;
        BufferedReader reader = null;
        try {
            String name = socket.getInetAddress().getHostAddress() + "@" + socket.getLocalPort();
            reader = new BufferedReader(new InputStreamReader(System.in));
            writer = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream()));
            String content;
            while (null != (content = reader.readLine())) {
                System.out.println(name + "说: " + content);
                writer.write(name + "说: " + content + "\n");
                writer.flush();
            }
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            IOUtils.closeCloseable(reader, writer, socket);
        }
    }
}

package de.bvb.util;

import java.io.Closeable;
import java.io.IOException;

public class IOUtils {

    public static void closeCloseable(Closeable... closeable) {
        try {
            if (closeable != null && closeable.length > 0) {
                for (Closeable c : closeable) {
                    if (c != null) {
                        c.close();
                    }
                }
            }
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }
}