取得客户端真实IP地址

获得客户端真实IP地址
//获得客户端真实IP地址：
public 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");//获得代理访问者地IP
}
if ((ip == null) || (ip.length() == 0) || ("unknown".equalsIgnoreCase(ip))) {
ip = request.getHeader("WL-Proxy-Client-IP");//获得无线代理访问者地IP
}
if ((ip == null) || (ip.length() == 0) || ("unknown".equalsIgnoreCase(ip))) {
ip = request.getRemoteAddr();//获得访问者地IP
}
return ip;
}