Apache Tika 2.5.0转换RTF表格为HTML失败的问题求助

在使用Apache Tika 2.5.0将RTF格式内容转换为HTML的过程中，遇到RTF表格解析异常的问题：RTF中包含\cellx、\clbrdr、\brdr等标签的表格，被Tika转换为空段落<p></p>，无法正确识别并生成HTML表格结构。

已尝试多种SAX处理器（如Transformer、ToHTMLContentHandler等），均未解决该问题。推测可通过元数据、处理器配置或ParseContext对RTFParser进行定制，但未找到相关配置示例。

以下是当前使用的转换方法代码：

public static void converterRTF2HTML2(File rtfFile, File htmlFile, Charset cpOut) throws TransformerConfigurationException, TikaException, IOException, SAXException {
    InputStream rtfStream = new FileInputStream(rtfFile);

    Tika tika = new Tika();
    String rtfDetect = tika.detect(rtfFile); // detect as 'application/rtf'
    Metadata metadata = new Metadata();
    metadata.set(Metadata.CONTENT_TYPE, rtfDetect);

    OutputStream htmlStream = new FileOutputStream(htmlFile);

    SAXTransformerFactory factory = (SAXTransformerFactory)
            SAXTransformerFactory.newInstance();
    TransformerHandler handler = factory.newTransformerHandler();

    handler.getTransformer().setOutputProperty(OutputKeys.METHOD, "xml");
    handler.getTransformer().setOutputProperty(OutputKeys.INDENT, "no");
    handler.getTransformer().setOutputProperty(OutputKeys.ENCODING, cpOut.name());
    handler.setResult(new StreamResult(htmlStream));

    ContentHandler handlerToXML = new ToXMLContentHandler();

      // handlers that I try
/////////////////
    ExpandedTitleContentHandler handler1 = new ExpandedTitleContentHandler(handler);
    //TaggedContentHandler handler1 = new TaggedContentHandler(handler);
    //TextAndAttributeContentHandler handler2 = new TextAndAttributeContentHandler(handler);

    ToHTMLContentHandler toHTMLContentHandler = new ToHTMLContentHandler(htmlStream, "UTF-8");
    //XHTMLContentHandler toXHTMLContentHandler = new XHTMLContentHandler(toHTMLContentHandler, metadata);

    //RichTextContentHandler handler1 = new RichTextContentHandler(rtfStream);
///////////////////

    ParseContext context = new ParseContext();


    //RTFParser parser = new RTFParser();
    Parser parser = tika.getParser();
    parser.parse(rtfStream, handler1, metadata, context);


    htmlStream.flush();
    rtfStream.close();
    htmlStream.close();

}

已尝试切换不同的处理器和解析器，问题仍未解决。

内容的提问来源于stack exchange，提问作者Pavel Cikota