8.TCP简单程序

服务端

package com.java520.tcpandudp;

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

public class Server {
    
    public static void main(String[] args) throws Exception {
        String data = "hello,my friend,how are you";
        
        //创建服务端,指定端口为8888
        ServerSocket server = new ServerSocket(8888);
        System.out.println("服务端已经准备就绪");
        
        //接收连接该服务端的客户端对象
        boolean accpet = true;
        
        while(accpet){
            Socket client = server.accept();
            System.out.println("连接过来的客户端:"+client.getInetAddress());
            //获取该客户端的输出流对象,给客户端输出数据
            PrintStream out = new PrintStream(client.getOutputStream());
            out.println(data);
            out.close();
        }
        
        server.close();
    }
    
}

客户端

package com.java520.tcpandudp;

import java.io.IOException;
import java.net.Socket;
import java.net.UnknownHostException;
import java.util.Scanner;

public class Client {
    
    public static void main(String[] args) throws UnknownHostException, IOException {
        //创建客户端对象,并指明连接服务端的主机和端口
        Socket client = new Socket("localhost", 8888);
        
        //获取客户端的输入流对象
        Scanner sc = new Scanner(client.getInputStream());
        while(sc.hasNextLine()){
            String line = sc.nextLine();
            System.out.println(line);
        }
        sc.close();
        client.close();
    }
    
}