获取客户端真实IP地址

import javax.servlet.http.HttpServletRequest;

public class RealIPAddress {

	//-----------获取客户端真实IP地址-------------
	public static String getIPAddress(HttpServletRequest request) {
		String realIP = request.getHeader("x-forwarded-for");
		if (realIP != null && realIP.length() != 0) {
			while ((realIP != null && realIP.equals("unknow"))) {
				realIP = request.getHeader("x-forwarded-for");
			}
		}
		if (realIP == null || realIP.length() == 0) {
			realIP = request.getHeader("Proxy-Clint-IP");
		}
		if (realIP == null || realIP.length() == 0) {
			realIP = request.getHeader("WL-Proxy-Clint-IP");
		}
		if (realIP == null || realIP.length() == 0) {
			realIP = request.getRemoteAddr();
		}
		return realIP;
	}
}