java配置dns解析

import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.Properties;

public class DnsConfig {
    public static void main(String[] args) {
        try {
            // 获取系统属性
            Properties properties = System.getProperties();
            // 设置DNS服务器
            properties.setProperty("sun.net.spi.nameservice.nameservers", "DNS服务器IP");
            // 设置默认的DNS解析方式为DNS服务器
            properties.setProperty("sun.net.spi.nameservice.provider.1", "dns,sun");
            // 解析域名
            InetAddress address = InetAddress.getByName("要解析的域名");
            System.out.println("解析结果：" + address.getHostAddress());
        } catch (UnknownHostException e) {
            e.printStackTrace();
        }
    }
}