java socket

1.服务器

2.客户端

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

public class Test6 {
    public static void main(String[] args) {
        int port = 99;
        try {
            ServerSocket serverSocket = new ServerSocket(port);

            while (true) {
                Socket accept = serverSocket.accept();
                //输入流
                InputStream inputStream = accept.getInputStream();
                byte[] bs = new byte[1024];
                inputStream.read(bs);

                String t1 = new String(bs);

                System.out.println("收到：" + t1);

                //输出流
                OutputStream outputStream = accept.getOutputStream();
                outputStream.write("给你：".getBytes());

                accept.close();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }

        System.out.println("hello,world");
    }
}

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

public class Test7 {
    public static void main(String[] args) {

        String host = "127.0.0.1";
        int port = 99;

        try {
            Socket socket = new Socket(host,port);
            OutputStream outputStream = socket.getOutputStream();
            outputStream.write("12345".getBytes());

            InputStream inputStream = socket.getInputStream();
            byte[] bs = new byte[1024];
            inputStream.read(bs);

            String t1 = new String(bs);

            System.out.println("收到：" + t1);

        } catch (IOException e) {
            e.printStackTrace();
        }

        System.out.println("hello,world");
    }
}