package com.ctrip.apollo.core.utils;

 import java.net.InetAddress;

 import java.net.UnknownHostException;

 import java.util.ArrayList;

 import java.util.List;

 public class DNSUtil {

   public static List<String> resolve(String domainName) throws UnknownHostException {

     List<String> result = new ArrayList<String>();

     InetAddress[] addresses = InetAddress.getAllByName(domainName);

     if (addresses != null) {

       for (InetAddress addr : addresses) {

         result.add(addr.getHostAddress());

       }

     }

     return result;

   }

 }