give some useful idea for poi function in android platform

[lzxshare]

hi author，thanks for your greate work to help android developer about poi，so i want to get some good idea about “how to use poi preview office document in andoid”. popular idea is that use poi convert office file to html，then use WebView to open the html. could you perfect the sample project about how to use poi convert the office file to html? thank you so much!

[EliAgne]

I was curious about this as well, and looks like the existing Apache POI code works as intended within this project.

Example:

    HWPFDocumentCore wordDocument = WordToHtmlUtils.loadDoc(new FileInputStream("D:\\temp\\seo\\1.doc"));
    WordToHtmlConverter wordToHtmlConverter = new WordToHtmlConverter(
            DocumentBuilderFactory.newInstance().newDocumentBuilder()
                    .newDocument());
    wordToHtmlConverter.processDocument(wordDocument);
    Document htmlDocument = wordToHtmlConverter.getDocument();
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    DOMSource domSource = new DOMSource(htmlDocument);
    StreamResult streamResult = new StreamResult(out);

    TransformerFactory tf = TransformerFactory.newInstance();
    Transformer serializer = tf.newTransformer();
    serializer.setOutputProperty(OutputKeys.ENCODING, "UTF-8");
    serializer.setOutputProperty(OutputKeys.INDENT, "yes");
    serializer.setOutputProperty(OutputKeys.METHOD, "html");
    serializer.transform(domSource, streamResult);
    out.close();

    String result = new String(out.toByteArray());
    System.out.println(result);

Source: https://stackoverflow.com/a/7901139/12327198

At that point, you would just need load the HTML data into the WebView, like you would any HTML file.

Just be aware that the WordToHtmlUtils seems to only be limited to the HWPFDocument (.doc) and not the XWPFDocument (.docx).