在不使用InetAddress的情况下用Java语言发送DNS查询

import java.io.IOException;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;

public class DNSQuery {
    public static void main(String[] args) {
        try {
            // 创建UDP套接字
            DatagramSocket socket = new DatagramSocket();

            // DNS服务器的IP地址和端口号
            InetAddress dnsServer = InetAddress.getByName("8.8.8.8");
            int dnsPort = 53;

            // 构造DNS查询请求数据包
            byte[] requestData = createDNSQuery("example.com");
            DatagramPacket requestPacket = new DatagramPacket(requestData, requestData.length, dnsServer, dnsPort);

            // 发送DNS查询请求
            socket.send(requestPacket);

            // 接收DNS查询响应
            byte[] responseData = new byte[1024];
            DatagramPacket responsePacket = new DatagramPacket(responseData, responseData.length);
            socket.receive(responsePacket);

            // 处理DNS查询响应
            String response = new String(responsePacket.getData(), 0, responsePacket.getLength());
            System.out.println("DNS response: " + response);

            // 关闭套接字
            socket.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    // 创建DNS查询请求数据包
    private static byte[] createDNSQuery(String domain) {
        // 构造DNS查询请求数据包的格式
        // ...

        // 返回DNS查询请求数据包
        return new byte[1024];
    }
}