package com.baidu.dsp.common.utils;
import javax.servlet.http.HttpServletRequest;
/**
* @author liaoqiqi
* @version 2014-4-23
*/
public class IpUtils {
public static String getIp(HttpServletRequest request) {
if (null == request) {
return null;
}
String ip = request.getHeader("x-forwarded-for");
if (!validateIp(ip)) {
ip = request.getHeader("Proxy-Client-IP");
if (!validateIp(ip)) {
ip = request.getHeader("WL-Proxy-Client-IP");
if (!validateIp(ip)) {
ip = request.getRemoteAddr();
}
}
}
return ip;
}
private static boolean validateIp(String ip) {
return (ip == null || ip.length() == 0 || ip.equalsIgnoreCase("unknown")) ? false : true;
}
}