package org.googlecode.perftrace.stat;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.Enumeration;
/**
* @author zhongfeng
*
*/
public class RealIPUtils {
public static String REAL_IP;
static {
try {
REAL_IP = getRealIp();
} catch (Exception e) {
}
}
public static String getRealIp() {
String localip = null;// 本地IP,如果没有配置外网IP则返回它
String netip = null;// 外网IP
Enumeration<NetworkInterface> netInterfaces;
try {
netInterfaces = NetworkInterface.getNetworkInterfaces();
} catch (SocketException e) {
return "";
}
InetAddress ip = null;
boolean finded = false;// 是否找到外网IP
while (netInterfaces.hasMoreElements() && !finded) {
NetworkInterface ni = netInterfaces.nextElement();
Enumeration<InetAddress> address = ni.getInetAddresses();
while (address.hasMoreElements()) {
ip = address.nextElement();
if (!ip.isSiteLocalAddress() && !ip.isLoopbackAddress()
&& ip.getHostAddress().indexOf(":") == -1) {// 外网IP
netip = ip.getHostAddress();
finded = true;
break;
} else if (ip.isSiteLocalAddress() && !ip.isLoopbackAddress()
&& ip.getHostAddress().indexOf(":") == -1) {// 内网IP
localip = ip.getHostAddress();
}
}
}
if (netip != null && !"".equals(netip)) {
return netip;
} else {
return localip;
}
}
}