}
        }
    }

    private String getValueFromMap(final Map<String, String> dataMap, final String key, final String defaultValue) {
        final String value = dataMap.get(key);
        if (StringUtil.isBlank(value)) {
            return defaultValue;
        }
        return value;
    }

    public int doCrawl(final Options options) {
        if (logger.isInfoEnabled()) {