TCP通信

1.需要一个服务端ServerSocket和一个客户端Socket

2.代码：

1）服务端：ServerSocket

package shapes;

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

public class ServerSocketDemo {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        try {
            // 创建一个ServerSocket
            ServerSocket ss = new ServerSocket(2000);
            // 侦听客户端Socket
            Socket s = ss.accept();
            // 获取输入流
            InputStream is = s.getInputStream();
            byte[] bys = new byte[1024];
            int len = is.read(bys);
            String data = new String(bys,0,len);
            System.out.println("数据是：" +  data);
            
            //释放资源
            s.close();
            ss.close();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        
        
    }

}

2）客户端：Socket

package shapes;

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

public class Main {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        try {
            // 创建Socket
            Socket s = new Socket("192.168.90.114", 2000);
            // 获取输出流，写数据
            OutputStream os = s.getOutputStream();
            os.write("hell，tcp!".getBytes());
            //释放资源
            s.close();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

}

 

3.结果：先运行服务端后再运行客户端

 

 

参阅：https://www.bilibili.com/video/BV1vk4y117fU?p=347