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Tcp通信

发布时间:2022/9/2 2:15:23

image

一发一收

Client

package tcpDemo;

import java.io.OutputStream;
import java.io.PrintStream;
import java.net.Socket;
import java.util.Scanner;

public class Client {
    public static void main(String[] args) throws Exception {
        //1.创建Socke通信管道请求服务端的连接
        //public Socket(String host, int port)
        //参数一: 服务端的IP地址
        //参数二: 服务端的端口
        Socket socket = new Socket("127.0.0.1",7777);
        //2, 从socket通信管道中得到一个字节输出流 负责发送数据
        OutputStream os = socket.getOutputStream();
        //3,把低级的字节流打包成打印流
        PrintStream ps = new PrintStream(os);
        Scanner sc = new Scanner(System.in);
        String msg = "";
        while(true) {
            msg = sc.nextLine();
            if(msg.equals("exit")) {
                System.out.println("聊天结束");
                socket.close();
            }
            ps.println(msg);
            ps.flush();
        }
    }
}

Server

package tcpDemo;

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

public class Server {
    public static void main(String[] args) throws Exception {
        //1.注册端口
        ServerSocket serverSocket = new ServerSocket(7777);
        //2.必须调用accept方法,等待接收客户端的Socket连接请求,建立Socket通信管道
        Socket socket = serverSocket.accept();
        //3, 从socket通信管道中得到一个字节输入流
        InputStream is = socket.getInputStream();
        //4. 把字节输入流包装成缓冲字符输入流进行消息的接收
        BufferedReader br = new BufferedReader(new InputStreamReader(is));
        //5. 按照行读取消息
        String msg;
        while((msg = br.readLine()) != null) {
            System.out.println(socket.getRemoteSocketAddress() + "说了: " + msg);
        }
    }
}

image

多发多收

client

package tcpDemo;

import java.io.OutputStream;
import java.io.PrintStream;
import java.net.Socket;
import java.util.Scanner;

public class Client {
    public static void main(String[] args) throws Exception {
        //1.创建Socke通信管道请求服务端的连接
        //public Socket(String host, int port)
        //参数一: 服务端的IP地址
        //参数二: 服务端的端口
        Socket socket = new Socket("127.0.0.1",7777);
        //2, 从socket通信管道中得到一个字节输出流 负责发送数据
        OutputStream os = socket.getOutputStream();
        //3,把低级的字节流打包成打印流
        PrintStream ps = new PrintStream(os);
        Scanner sc = new Scanner(System.in);
        String msg = "";
        while(true) {
            msg = sc.nextLine();
            if(msg.equals("exit")) {
                System.out.println("聊天结束");
                socket.close();
            }
            ps.println(msg);
            ps.flush();
        }
    }
}

server

package tcpDemo;

import ch.qos.logback.classic.net.server.ServerSocketReceiver;

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

public class Server {
    public static void main(String[] args) throws Exception {
        //1.注册端口
        ServerSocket serverSocket = new ServerSocket(7777);
        //2.必须调用accept方法,等待接收客户端的Socket连接请求,建立Socket通信管道
        while(true) {
            Socket socket = serverSocket.accept();
            new ServerReaderThread(socket).start();
        }

    }
}

包装的Socket类

package tcpDemo;

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

public class ServerReaderThread extends Thread {
    private Socket socket;
    ServerReaderThread(Socket socket) {
        this.socket = socket;
    }
    @Override
    public void run() {
        try {
            //3, 从socket通信管道中得到一个字节输入流
            InputStream is = this.socket.getInputStream();
            //4. 把字节输入流包装成缓冲字符输入流进行消息的接收
            BufferedReader br = new BufferedReader(new InputStreamReader(is));
            //5. 按照行读取消息
            String msg;
            while((msg = br.readLine()) != null) {
                System.out.println(socket.getRemoteSocketAddress() + "说了: " + msg);
            }
        } catch (Exception err) {
            System.out.println(socket.getRemoteSocketAddress() + "下线了");
        }

    }
}

线程池优化

Client

package tcpDemo;

import java.io.OutputStream;
import java.io.PrintStream;
import java.net.Socket;
import java.util.Scanner;

public class Client {
    public static void main(String[] args) throws Exception {
        //1.创建Socke通信管道请求服务端的连接
        //public Socket(String host, int port)
        //参数一: 服务端的IP地址
        //参数二: 服务端的端口
        Socket socket = new Socket("127.0.0.1",7777);
        //2, 从socket通信管道中得到一个字节输出流 负责发送数据
        OutputStream os = socket.getOutputStream();
        //3,把低级的字节流打包成打印流
        PrintStream ps = new PrintStream(os);
        Scanner sc = new Scanner(System.in);
        String msg = "";
        while(true) {
            msg = sc.nextLine();
            if(msg.equals("exit")) {
                System.out.println("聊天结束");
                socket.close();
            }
            ps.println(msg);
            ps.flush();
        }
    }
}

Server

package tcpDemo;

import ch.qos.logback.classic.net.server.ServerSocketReceiver;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.concurrent.*;

public class Server {
    private static ExecutorService pool = new ThreadPoolExecutor(3,5, 6,TimeUnit.SECONDS,new ArrayBlockingQueue<>(2), Executors.defaultThreadFactory(),new ThreadPoolExecutor.AbortPolicy());
    public static void main(String[] args) throws Exception {
        //1.注册端口
        ServerSocket serverSocket = new ServerSocket(7777);
        //2.必须调用accept方法,等待接收客户端的Socket连接请求,建立Socket通信管道
        while(true) {
            Socket socket = serverSocket.accept();
            Runnable target = new ServerReaderRunnable(socket);
            pool.execute(target);
        }

    }
}
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