String enc;
            if (StringUtil.isNotBlank(getFessConfig().getCrawlerDocumentSiteEncoding())
                    && (!getFessConfig().isCrawlerDocumentUseSiteEncodingOnEnglish()
                            || ("ISO-8859-1".equalsIgnoreCase(encoding) || "US-ASCII".equalsIgnoreCase(encoding)))) {
                enc = getFessConfig().getCrawlerDocumentSiteEncoding();
            } else {
                enc = encoding;
            }