多线程socket编程示例

工程：

代码：

package com.my.socket.business;

/**
 * 业务实现类
 *
 * @author ＺＹ
 *
 */
public class CoreMisBusinessImpl implements IBusiness {

    @Override
    public String doBusiness(String requestJsonMsg) {
        System.out.println("收到数据[" + requestJsonMsg + "]");

        // TODO 业务处理
        System.out.println("已处理数据");

        // 返回业务数据（Json形式）
        String resJson = "{\"markId\":1,\"ID\":\"02\",\"goods_id\":\"1\",\"markContent\":\"成功\",\"userNickname\":\"hello\"}";

        System.out.println("已返回数据");

        return resJson;
    }
}

package com.my.socket.business;

public interface IBusiness {

    public String doBusiness(String requestJsonMsg);

}

package com.my.socket.common;

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

/**
 * socket发送端
 *
 * @author ＺＹ
 *
 */
public class Client {

    /**
     * 发送socket请求，返回服务器处理结果字符串
     *
     * @param ip
     * @param port
     * @param timeout
     * @param requestJsonMsg
     * @return
     * @throws IOException
     */
    public static String sendSocketRequest(String ip, int port, int timeout, String requestJsonMsg) throws IOException {
        String res = null;
        Socket socket = null;
        BufferedReader br = null;
        BufferedWriter out = null;
        try {
            socket = new Socket(ip, port);
            socket.setSoTimeout(timeout);
            System.out.println("现在客户端发起了一个socket请求，客户端[ip=" + socket.getLocalAddress() + ",port=" + port + "],服务端[ip="
                    + ip + ",port=" + port + "]");

            // 发送消息
            requestJsonMsg = requestJsonMsg + Constant.LINESEPARATOR;
            out = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream(), Constant.CHARCODE_UTF8));
            out.write(requestJsonMsg);
            out.flush();
            // 接收服务器的反馈
            br = new BufferedReader(new InputStreamReader(socket.getInputStream(), Constant.CHARCODE_UTF8));
            res = br.readLine();

        } catch (IOException e) {
            e.printStackTrace();
            throw e;
        } finally {
            try {
                if (socket != null)
                    socket.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
            try {
                if (br != null)
                    br.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
            if (out != null) {
                try {
                    out.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }

        return res;
    }

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

        String ip = "10.5.109.184";
        int port = 8088;
        int timeout = 1000 * 60 * 5;
        String requestJsonMsg = "{\"markId\":1,\"ID\":\"02\",\"goods_id\":\"1\",\"markContent\":\"测试\",\"userNickname\":\"hello\"}";

        String res = sendSocketRequest(ip, port, timeout, requestJsonMsg);

        System.out.println("res=" + res);
    }
}

package com.my.socket.common;

public class Constant {

    /**
     * 编码方式
     */
    public static final String CHARCODE_UTF8 = "utf-8";

    /**
     * 文件换行符
     */
    public static final String LINESEPARATOR = System.getProperty("line.separator");

}

package com.my.socket.common;

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

import com.my.socket.business.IBusiness;

class Handler implements Runnable {

    private Socket socket;

    private IBusiness business;

    public Handler(Socket socket,IBusiness business) {
        this.socket = socket;
        this.business = business;
    }

    private BufferedWriter getWriter(Socket socket) throws IOException {
        return new BufferedWriter(new OutputStreamWriter(socket
                .getOutputStream(), Constant.CHARCODE_UTF8));
    }

    private BufferedReader getReader(Socket socket) throws IOException {
        InputStream socketIn = socket.getInputStream();
        return new BufferedReader(new InputStreamReader(socketIn,
                Constant.CHARCODE_UTF8));
    }

    public void run() {
        BufferedReader br = null;
        BufferedWriter out = null;
        try {
            br = getReader(socket);
            out = getWriter(socket);
            String requestJsonMsg = null;
            while ((requestJsonMsg = br.readLine()) != null) {
                // 业务处理：接收到请求消息，处理后，返回消息
                String responseJsonMsg = business.doBusiness(requestJsonMsg);
                responseJsonMsg = responseJsonMsg + Constant.LINESEPARATOR;
                out.write(responseJsonMsg);
                out.flush();
            }
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                if (socket != null)
                    socket.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
            try {
                if (br != null)
                    br.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
            try {
                if (out != null)
                    out.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}

package com.my.socket.common;

import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

import com.my.socket.business.CoreMisBusinessImpl;
import com.my.socket.business.IBusiness;

/**
 * 数据同步服务:可用于前置和核心mis，根据实例化参数配置
 * 注意：本实例只有一个
 *
 * @author zhangyi
 *
 */
public class MultiThreadServer extends Thread {
    private static MultiThreadServer server;
    private ServerSocket serverSocket;
    private ExecutorService executorService;
    private final int POOL_SIZE = 10;
    private int port;
    // 业务business
    private IBusiness business;

    public int getPort() {
        return port;
    }

    public void setPort(int port) {
        this.port = port;
    }

    public IBusiness getBusiness() {
        return business;
    }

    public void setBusiness(IBusiness business) {
        this.business = business;
    }

    private MultiThreadServer() {
    }

    public static MultiThreadServer getInstance() {
        if (null == server) {
            server = new MultiThreadServer();
        }
        return server;
    }

    private void init(int port) throws IOException {
        serverSocket = new ServerSocket(port);
        executorService = Executors.newFixedThreadPool(Runtime.getRuntime()
                .availableProcessors()
                * POOL_SIZE);
        System.out.println("socket同步服务已启动...");
    }

    private void startExecute() {
        while (true) {
            Socket socket = null;
            try {
                socket = serverSocket.accept();
                executorService.execute(new Handler(socket, business));

            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }

    /**
     * 入口方法
     * 一个核心mis只有一个ip和端口
     *
     */
    @Override
    public void run() {

        try {
            server.init(port);
            server.startExecute();
        } catch (IOException e) {
            e.printStackTrace();
        }

    }

    public static void main(String[] args) {
        // 必须是单例的
        MultiThreadServer server = MultiThreadServer.getInstance();

        IBusiness coreMisBusiness = new CoreMisBusinessImpl();

        int port = 8088;

        server.setBusiness(coreMisBusiness);
        server.setPort(port);

        Thread th = new Thread(server);
        th.start();
        System.out.println("服务已启动...");
    }
}

Original: https://www.cnblogs.com/qqzy168/p/3936718.html
Author: 嗨,你的益达~~~
Title: 多线程socket编程示例