public IgnoredPathsFilter(Collection<String> configuration) 
{
        ignoredPatterns = new Pattern[configuration.size()];
        int i = 0;
        for (String regexp : configuration)
        {
            Pattern p = Pattern.compile(regexp, Pattern.CASE_INSENSITIVE);
            ignoredPatterns[i++] = p;
        }
}

 public boolean service(HttpServletRequest request,
    HttpServletResponse response,
    HttpServletRequestHandler handler) throws IOException 
{
        // The servlet path should be "/", and path info is everything after that.
        String path = request.getServletPath();
        String pathInfo = request.getPathInfo();
        if (pathInfo != null) path += pathInfo;
        for (Pattern p : ignoredPatterns)
        {
            if (p.matcher(path).matches()) return false;
        }
        // Not a match, so let it go.
        return handler.service(request, response);
}