一个简单的支持多并发的socket服务/客户端

摘要：代码实战启动类服务启动类启动类线程监听端口服务类监听端口主服务监听端口服务端启动成功，端口服务端启动失败线程模式，防止注释启动客户端接受服务端异常客户端接入监听类客户端接入监听类数据连接值新客户端接入对客户端的业务处理，接收并重写回去客户

package com.example.demo.server;

/**
 * @author  MySelf
 * @create  2018/9/29
 * @desc 服务启动类
 **/
public class ServerBoot {

    private static final int PORT = 8000;

    /**
     * 启动Server类线程
     * @param args
     */
    public static void main(String[] args) {
        Server server = new Server(PORT);
        server.start();
    }

}

package com.example.demo.server;

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

/**
 * @author  MySelf
 * @create  2018/9/29
 * @desc Server监听端口主服务
 **/
public class Server {

    private ServerSocket serverSocket;

    /**
     * 监听端口
     * @param port
     */
    public Server(int port){
        try {
            this.serverSocket = new ServerSocket(port);
            System.out.println("服务端启动成功，端口："+port);
        }catch (IOException e){
            System.out.println("服务端启动失败");
        }
    }

    /**
     * 线程模式，防止注释
     */
    public void start(){
        new Thread(new Runnable() {
            @Override
            public void run() {
                doStart();
            }
        }).start();
    }

    /**
     * 启动客户端接受
     */
    private void doStart() {
        while (true){
            try {
                Socket client = serverSocket.accept();
                new ClientHandler(client).start();
            }catch (IOException e){
                System.out.println("服务端异常");
            }
        }
    }

}

package com.example.demo.server;

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

/**
 * @author  MySelf
 * @create  2018/9/29
 * @desc 客户端接入监听类
 **/
public class ClientHandler {

    /** 数据连接值 */
    public static final int MAX_DATA_LEN = 1024;
    private final Socket socket;

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

    public void start(){
        System.out.println("新客户端接入");
        new Thread(new Runnable() {
            @Override
            public void run() {
                doStart();
            }
        }).start();
    }

    /**
     * 对客户端的业务处理，接收并重写回去
     */
    private void doStart(){
        try {
            InputStream inputStream = socket.getInputStream();
            while (true){
                byte[] data = new byte[MAX_DATA_LEN];
                int len;
                while((len = inputStream.read(data)) != -1){
                    String message = new String(data,0,len);
                    System.out.println("客户端传来消息："+message);
                    socket.getOutputStream().write(data);
                }
            }
        }catch (IOException e){
            e.printStackTrace();
        }
    }

}

package com.example.demo.client;

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

/**
 * @author  MySelf
 * @create  2018/9/29
 * @desc 客户端启动类
 **/
public class Client {

    private static final String HOST = "127.0.0.1";
    private static final int PORT = 8000;
    private static final int SLEEP_TIME = 5000;

    public static void main(String[] args) throws IOException {

        final Socket socket = new Socket(HOST,PORT);

        /**
         * 客户端启动，定时向服务端发送数据
         */
        new Thread(new Runnable() {
            @Override
            public void run() {
                System.out.println("客户端启动成功！");
                while (true){
                    try {
                        String message = "hello world";
                        System.out.println("客户端发送数据："+message);
                        socket.getOutputStream().write(message.getBytes());
                    }catch (Exception e){
                        System.out.println("写数据出错！");
                    }
                    sleep();
                }
            }
        }).start();
    }

    private static void sleep() {
        try {
            Thread.sleep(SLEEP_TIME);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }

}

GitHub项目：基于Netty4与SpringBoot，聊天室WebSocket（文字图片）、Iot物联网-TCP/IP协议单片机通信，异步存储聊天数据

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