final DOMParser parser = getDomParser();
            parser.parse(new InputSource(is));
            final Document document = parser.getDocument();
            // base href
            final String baseHref = getBaseHref(document);
            URI uri;
            try {
                uri = new URI(baseHref == null ? responseData.getUrl() : baseHref);
            } catch (final Exception e) {

        }
    }

    protected List<String> getAnchorList(final Document document, final ResponseData responseData) {
        List<RequestData> anchorList = new ArrayList<>();
        final String baseHref = getBaseHref(document);
        try {
            final URL url = getBaseUrl(responseData.getUrl(), baseHref);
            for (final Map.Entry<String, String> entry : childUrlRuleMap.entrySet()) {