IpUtils.java

package com.robert.vesta.util;

import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.Enumeration;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class IpUtils {
	private static final Logger log = LoggerFactory.getLogger(IpUtils.class);

	public static String getHostIp() {
		String ip = null;
		try {
			Enumeration<NetworkInterface> en = NetworkInterface
					.getNetworkInterfaces();
			while (en.hasMoreElements()) {
				NetworkInterface intf = (NetworkInterface) en.nextElement();
				Enumeration<InetAddress> enumIpAddr = intf.getInetAddresses();
				while (enumIpAddr.hasMoreElements()) {
					InetAddress inetAddress = (InetAddress) enumIpAddr
							.nextElement();
					if (!inetAddress.isLoopbackAddress()
							&& !inetAddress.isLinkLocalAddress()
							&& inetAddress.isSiteLocalAddress()) {
						ip = inetAddress.getHostAddress();
					}
				}
			}
		} catch (SocketException e) {
			log.error("Fail to get IP address.", e);
		}
		return ip;
	}

	public static String getHostName() {
		String hostName = null;
		try {
			Enumeration<NetworkInterface> en = NetworkInterface
					.getNetworkInterfaces();
			while (en.hasMoreElements()) {
				NetworkInterface intf = (NetworkInterface) en.nextElement();
				Enumeration<InetAddress> enumIpAddr = intf.getInetAddresses();
				while (enumIpAddr.hasMoreElements()) {
					InetAddress inetAddress = (InetAddress) enumIpAddr
							.nextElement();
					if (!inetAddress.isLoopbackAddress()
							&& !inetAddress.isLinkLocalAddress()
							&& inetAddress.isSiteLocalAddress()) {
						hostName = inetAddress.getHostName();
					}
				}
			}
		} catch (SocketException e) {
			log.error("Fail to get host name.", e);
		}
		return hostName;
	}
}