itext xmlworker with javafx htmleditor

StackOverflow https://stackoverflow.com/questions/23390011

문제

I created a simple JavaFX (2.2) FXML project. I am trying to convert a html string to different Elements and add them to a Paragraph in my PDF document generated by iText. As HTMLWorker is deprecated, I use XMLWorker. It does seem to work with a own written simple html string, e.g.:

StringReader in = new StringReader("<html><body><p>test</p></body></html>");

However, when I try to use the html string generated by the JavaFX HTMLEditor control, I receive following message:

Caused by: java.lang.NoSuchMethodError: com.itextpdf.tool.xml.html.pdfelement.NoNewLineParagraph.setMultipliedLeading(F)V
at com.itextpdf.tool.xml.html.AbstractTagProcessor.currentContentToParagraph(AbstractTagProcessor.java:268)
at com.itextpdf.tool.xml.html.Span.end(Span.java:77)
at com.itextpdf.tool.xml.html.AbstractTagProcessor.endElement(AbstractTagProcessor.java:192)
at com.itextpdf.tool.xml.pipeline.html.HtmlPipeline.close(HtmlPipeline.java:207)
at com.itextpdf.tool.xml.XMLWorker.endElement(XMLWorker.java:142)
at com.itextpdf.tool.xml.parser.XMLParser.endElement(XMLParser.java:396)
at com.itextpdf.tool.xml.parser.state.ClosingTagState.process(ClosingTagState.java:71)
at com.itextpdf.tool.xml.parser.XMLParser.parseWithReader(XMLParser.java:236)
at com.itextpdf.tool.xml.parser.XMLParser.parse(XMLParser.java:214)
at com.itextpdf.tool.xml.XMLWorkerHelper.parseXHtml(XMLWorkerHelper.java:149)
at hmtltopdf.FXMLDocumentController.handleButtonAction(FXMLDocumentController.java:64)
... 54 more

My guess is that there are a bunch of tags in the html string that aren't recognized by XMLWorker. The HTML editor creates this html string:

<html><head></head><body contenteditable="true"><p style="text-align: left;"><font face="'Segoe UI'">test</font></p></body></html>

If that is the case, is there a way to 'clean' the html string? Or do I have to use another HTML editor of some sort?

Code of my sample project:

//using iText 5.3.1 and XMLWorker 5.5.0

@FXML
private HTMLEditor htmlEditor;

@FXML
private void handleButtonAction(ActionEvent event) {
    final Document document = new Document();

    PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream("D:/test/loremipsum.pdf"));

    document.open();

    //StringReader in = new StringReader("<html><body><p>test</p></body></html>"); //this works
    StringReader in = new StringReader(htmlEditor.getHtmlText()); //this does not work

    try {
        final Paragraph test = new Paragraph();
        XMLWorkerHelper.getInstance().parseXHtml(new ElementHandler() {
            @Override
            public void add(final Writable w) {
                if (w instanceof WritableElement) {
                    List<Element> elements = ((WritableElement) w).elements();
                    for (Element e : elements) {
                        test.add(e);
                    }
                }
            }
        }, in);

        document.add(test);
    } catch (IOException | DocumentException e) {
        System.out.println(e.toString());
        System.out.println(e.getMessage());
    }

    document.close();
}

Edit:

It seems the problems start when using <b>, <i>, ... or other tags.

도움이 되었습니까?

해결책

Ah it seems that it has to do something with using an older iText version. I've updated to iText 5.5.0 and it seems to work now. I still had to remove any <br> and <hr> tags thou.

//using iText 5.5.0 and XMLWorker 5.5.0

@FXML
private HTMLEditor htmlEditor;

@FXML
private void handleButtonAction(ActionEvent event) {
    final Document document = new Document();

    PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream("D:/test/loremipsum.pdf"));

    document.open();

    String htmlString = htmlEditor.getHtmlText();

    htmlString = htmlString.replace("<br>", "");
    htmlString = htmlString.replace("<br/>", "");
    htmlString = htmlString.replace("<br />", "");

    htmlString = htmlString.replace("<hr>", "<p></p>");
    htmlString = htmlString.replace("<hr/>", "<p></p>");
    htmlString = htmlString.replace("<hr />", "<p></p>");

    StringReader in = new StringReader(htmlString);

    try {
        final Paragraph test = new Paragraph();
        XMLWorkerHelper.getInstance().parseXHtml(new ElementHandler() {
            @Override
            public void add(final Writable w) {
                if (w instanceof WritableElement) {
                    List<Element> elements = ((WritableElement) w).elements();
                    for (Element e : elements) {
                        test.add(e);
                    }
                }
            }
        }, in);

        document.add(test);
    } catch (IOException | DocumentException e) {
        System.out.println(e.toString());
        System.out.println(e.getMessage());
    }

    document.close();
}
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