java网络传输学习

import java.net.InetAddress;
import java.net.UnknownHostException;public class source {public static void main(String[] args) throws UnknownHostException {InetAddress localHost = InetAddress.getLocalHost();System.out.println(localHost);//主机名和IP地址InetAddress byName = InetAddress.getByName("PC-20230129EACF");System.out.println(byName);InetAddress byName1 = InetAddress.getByName("www.baidu.com");//获取百度域名的的对象System.out.println(byName1);//需要联网访问百度的对象String hostAddress = localHost.getHostAddress();System.out.println(hostAddress);//获得主机对应地址String hostName = localHost.getHostName();System.out.println(hostName);}
}

运行结果如下

PC-20230129EACF/192.168.43.87
PC-20230129EACF/192.168.43.87
www.baidu.com/14.119.104.254
192.168.43.87
PC-20230129EACF

服务器读写

package source;import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.InetAddress;
import java.net.ServerSocket;
import java.net.Socket;
import java.nio.charset.StandardCharsets;public class serversocket {public static void main(String[] args) throws IOException {ServerSocket serverSocket=new ServerSocket(999);Socket socket=serverSocket.accept();//等待其连接
//        Socket socket1 = new Socket(InetAddress.getLocalHost(), 999);InputStream inputStream = socket.getInputStream();OutputStream outputStream = socket.getOutputStream();outputStream.write("hello,jack".getBytes(StandardCharsets.UTF_8));socket.shutdownOutput();byte [] buf=new byte[1024];int a=0;while ((a=inputStream.read(buf))!=-1){System.out.println(new String(buf,0,a));}outputStream.close();inputStream.close();socket.close();serverSocket.close();}
}

客服端读写

package source;import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.InetAddress;
import java.net.Socket;
import java.net.UnknownHostException;
import java.nio.charset.StandardCharsets;public class server {public static void main(String[] args) throws IOException {Socket socket1 = new Socket(InetAddress.getLocalHost(), 999);
//        System.out.println(socket1.getClass());OutputStream outputStream = socket1.getOutputStream();InputStream inputStream = socket1.getInputStream();int read=0;byte []buf=new byte[1024];while ((read=inputStream.read(buf))!=-1){System.out.println(new String(buf,0,read));}outputStream.write("hello,world".getBytes(StandardCharsets.UTF_8));socket1.shutdownOutput();inputStream.close();outputStream.close();socket1.close();}}