[网络协议]TCP协议网络编程之一对一聊天java具体实现

TCP网络编程一对一聊天

需求：使用TCP协议实现两台电脑间的交互聊天

import java.io.IOException;
import java.io.PrintStream;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.Scanner;
//服务器
public class Server {
    public static void main(String[] args) throws IOException {
        ServerSocket server = new ServerSocket(8080);
        Socket socket = server.accept();
        Scanner scan = new Scanner(System.in);
        //启动接收线程
        new ReceiveThread(socket).start();
		//发送数据
        PrintStream ps = new PrintStream(socket.getOutputStream());
        String str="";
        while (true){
            str = scan.next();
            ps.println("服务器："+str);
        }
    }
}

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.Socket;
//接收线程
public class ReceiveThread extends Thread{
    private Socket socket;
    public ReceiveThread(Socket socket) {
        this.socket = socket;
    }
    @Override
    public void run() {
        BufferedReader br=null;
        try {
            br = new BufferedReader(new InputStreamReader(socket.getInputStream()));
        } catch (IOException e) {
            e.printStackTrace();
        }
        String s =null;
        while(true){
            try {
                s = br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            }
            System.out.println(s);
        }
    }
}

import java.io.IOException;
import java.io.PrintStream;
import java.net.Socket;
import java.util.Scanner;
//客户端
public class Client {
    public static void main(String[] args) throws IOException {
//        InetAddress localHost = InetAddress.getLocalHost();
//        System.out.println(localHost);//这个东西可以看自己电脑当前的ip地址
        Socket socket = new Socket("127.0.0.1", 8080);
        //127.0.0.1代表本机
        //如果想两台电脑交互，这里填服务器电脑的地址
        Scanner scan = new Scanner(System.in);
        //启动接收线程
        new ReceiveThread(socket).start();
        PrintStream ps = new PrintStream(socket.getOutputStream());
        String str="";
        while(true){
            str = scan.next();
            ps.println("客户端: "+str);
        }
    }
}

注：此次代码未实现3次招手，4次挥手。而且客户端与服务器的一对一聊天也并不适用于各种聊天软件，本代码仅是一个为了认识TCP交互而做的Demo。
运行顺序：先运行服务器再运行客户端，否则报错