This method is used to get client ip address for login audit. - Java Servlet JSP

Java examples for Servlet JSP:Servlet

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Description

This method is used to get client ip address for login audit.

Demo Code


import javax.servlet.http.HttpServletRequest;

public class Main{
    /**/*ww  w.j  a va  2  s .com*/
     * This method is used to get client ip address for login audit.
     */
    public static String getClientIpAddr(final HttpServletRequest request) {
        final String unknown = "unknown";
        String ipAddress = request.getHeader("X-Forwarded-For");
        if (ipAddress == null || ipAddress.length() == 0
                || unknown.equalsIgnoreCase(ipAddress)) {
            ipAddress = request.getHeader("Proxy-Client-IP");
        }
        if (ipAddress == null || ipAddress.length() == 0
                || unknown.equalsIgnoreCase(ipAddress)) {
            ipAddress = request.getHeader("WL-Proxy-Client-IP");
        }
        if (ipAddress == null || ipAddress.length() == 0
                || unknown.equalsIgnoreCase(ipAddress)) {
            ipAddress = request.getHeader("HTTP_CLIENT_IP");
        }
        if (ipAddress == null || ipAddress.length() == 0
                || unknown.equalsIgnoreCase(ipAddress)) {
            ipAddress = request.getHeader("HTTP_X_FORWARDED_FOR");
        }
        if (ipAddress == null || ipAddress.length() == 0
                || unknown.equalsIgnoreCase(ipAddress)) {
            ipAddress = request.getRemoteAddr();
        }
        return ipAddress;
    }
}

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