获得客户端实际Ip地址

前面有代理服务器也能获得实际Ip。

/**

*

* 功能描述: 获取用户ip<br>

* 〈功能详细描述〉

*

* @param request

* @return

* @see [相关类/方法](可选)

* @since [产品/模块版本](可选)

*/

private String getUserIp(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.getHeader("HTTP_CLIENT_IP");

}

if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {

ip = request.getHeader("HTTP_X_FORWARDED_FOR");

}

if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {

ip = request.getRemoteAddr();

}

return ip;

}