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; } } }