}

    protected String getUserCodeFromCookie(final HttpServletRequest request) {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        final Cookie[] cookies = request.getCookies();
        if (cookies != null) {
            for (final Cookie cookie : cookies) {
                if (cookieName.equals(cookie.getName()) && fessConfig.isValidUserCode(cookie.getValue())) {