【Java】TCP发送与接收数据

发送

package LearnJava17;

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

public class ClientDemo {
    public static void main(String[] args) throws IOException {
//        Socket s=new Socket(InetAddress.getByName("127.0.0.1"),10000);
        Socket s = new Socket("127.0.0.1",10000);

//        获取输出流，写数据
        OutputStream os = s.getOutputStream();
        os.write("Hello,TCP".getBytes());

//        释放资源
        s.close();
    }
}

接收

package LearnJava17;

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

public class ServerDemo {
    public static void main(String[] args) throws IOException {
        ServerSocket ss = new ServerSocket(10000);
//      监听要连接到此的套接字并接受它
        Socket s = ss.accept();
//        获取输入流，读数据
        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();
    }
}