获取访问来源的真实IP

最近在做IP数据来源的统计，需要统计来源的真实IP，于是就有了下文

public class ObtainIP {

/**
* 获取访问请求的真实IP
* @param args
*/
public static String getIpAddr(HttpServletRequest request) {
String ip = request.getHeader("x-forwarded-for");
if(ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getHeader("Proxy-Client-IP");
}
if(ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getHeader("WL-Proxy-Client-IP");
}
if(ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getRemoteAddr();
}
return ip;
}
}

通过request.getHeader("x-forwarded-for")可以获取到真实的IP地址。
本文出自 “博客即日起停止更新” 博客，请务必保留此出处http://sucre.blog.51cto.com/1084905/717948