【网络编程】用Socket实现聊天小程序

客户端：

 

package day18_网络编程;

import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.Inet4Address;
import java.net.InetAddress;
import java.net.Socket;
import java.net.UnknownHostException;
import java.util.Scanner;

public class Client {

    public static void main(String[] args) throws IOException {
        InetAddress address = InetAddress.getByName("127.0.0.1");
        while (true) {
            Socket socket = new Socket(address, 8833);
            // 向服务器传输数据
            OutputStream os = socket.getOutputStream();
            Scanner sc = new Scanner(System.in);
            String word = sc.next();
            os.write(word.getBytes());
            socket.shutdownOutput();
            
            // 读取服务器发送过来的信息
            InputStream is = socket.getInputStream();
            byte[] bs = new byte[1024];
            int length = -1;
            while ((length = is.read(bs)) != -1) {
                String str = new String(bs, 0, length);
                System.out.println(str);
            }
            socket.shutdownInput();

            os.close();
            is.close();
        }
    }

}

 

服务器端：

package day18_网络编程;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.Scanner;

import sun.nio.cs.ext.ISCII91;

public class Server {

    public static void main(String[] args) throws IOException {
        ServerSocket serverSocket = new ServerSocket(8833);
        
        while (true) {
            Socket socket = serverSocket.accept();
            // 读取客户端发送过来的信息
            InputStream is = socket.getInputStream();
            int length = -1;
            byte[] bs = new byte[1024];
            while ((length = is.read(bs)) != -1) {
                String msg = new String(bs, 0, length);
                System.out.println(msg);
            }
            socket.shutdownInput();
            
            // 向客户端发送信息
            OutputStream os = socket.getOutputStream();
            Scanner scanner = new Scanner(System.in);
            String toWord = scanner.next();
            os.write(toWord.getBytes());
            socket.shutdownOutput();
            is.close();
            os.close();
        }
        
    }

}