2021-09-27 网络编程(TCP传输2)

演示TCP传输的客户端和服务端的互访
需求：客户端给服务端发送数据，服务端收到数据后，给客户端反馈信息

import java.io.InputStream;
import java.io.OutputStream;
import java.net.ServerSocket;
import java.net.Socket;

public class TCPServer2 {

    public static void main(String[] args) throws Exception {
        ServerSocket server = new ServerSocket(10004);
        // 通过accept方法获取连接过来的客户端对象
        Socket socket = server.accept(); // 阻塞式方法
        System.out.println(socket.getInetAddress().getHostAddress() + "...connected");
        InputStream is = socket.getInputStream();
        byte[] buf = new byte[1024];
        int len = is.read(buf);
        System.out.println(new String(buf, 0, len));

        OutputStream os = socket.getOutputStream();
        os.write("哥们收到，你也好".getBytes());
        socket.close();
        server.close();
    }

}

import java.io.InputStream;
import java.io.OutputStream;
import java.net.Socket;

public class TCPClient2 {

    public static void main(String[] args) throws Exception {
        Socket socket = new Socket("192.168.1.6", 10004);
        OutputStream os = socket.getOutputStream();
        os.write("服务端，你好".getBytes());

        InputStream is = socket.getInputStream();
        byte[] buf = new byte[1024];
        int len = is.read(buf);
        System.out.println(new String(buf, 0, len));

        socket.close();
    }

}