摘要：类似nslookup摘自：http://www.javadb.com/perform-nslookup-with-the-inetaddress-classimport java.net.InetAddress;import java.net.UnknownHostException;/* * Main.java * * @author www.javadb.com */public class Main { /* * This method performs a NS Lookup */ public void performNSLookup() { ... 阅读全文

摘要：public static boolean checkip(String ip) { final Pattern IP_PATTERN = Pattern.compile("([1-9]|[1-9]\\d|1\\d{2}|2[0-4]\\d|25[0-5])(\\.(\\d|[1-9]\\d|1\\d{2}|2[0-4]\\d|25[0-5])){3}"); return IP_PATTERN.matcher(ip).matches(); } 阅读全文