It would seem you cannot open the Stamper in append mode e.g.: *PdfStamper
stamper = new PdfStamper(reader, output, '\0', true);* and then replace
the XFA stream with a new one containing data.
If I do NOT open the Stamper in append mode, then my XFA replacement works
but my PDF is no longer Reader Enabled, so no win / win solution.
My workaround for now is to generate and supply the user with an XDP file.
Suggestions for any other workarounds welcome!
On Wed, Apr 11, 2012 at 2:22 PM, Mario Ribeiro <mario.f.ribe...@gmail.com>wrote:
> Hi iText Gurus
>
> New to iText. I have searched the archives, forums and examples, found
> some others with the issue but never an explanation for a resolution.
>
> I have complex reader enabled XFA forms. I want to populate them
> programatically with data while preserving the reader enabling as per
> example http://itextpdf.com/examples/iia.php?id=166. The populating is
> happening by manipulating and switching out the DOM document for the XFA
> Form using XfaForm.setXfa as in method fillData2 in example
> http://itextpdf.com/examples/iia.php?id=164. Difference being that I am
> reusing the Dom Doc retrieved from the PDF instead of creating my own from
> scratch.
>
> Program runs fine, but when I open the new PDF, reader enabling is
> preserved but none of the changes are showing, it looks the same as the
> source (size differs though). I also write out the XML doc just to make
> sure it has the changes which it does.
>
> Where am I going wrong?
>
> The source code and the source PDF file can be found here:
> https://docs.google.com/open?id=0B9IjLSDCpdS5RTJYNFJmbmlGa1k
>
> Here is my program:
>
> public class populateXfaPdf {
> private static final String SOURCE_FILE = "c:/temp/SF-424.pdf";
> private static final String DESTINATION_FILE =
> "c:/temp/NEW_SF-424.pdf";
> private static final String XML_FILE = "c:/temp/NEW_SF-424.xml";
>
> public populateXfaPdf() {
> super();
> }
>
> /**
> * Find node in document by name
> * @param doc
> * @param name
> * @return
> */
> private static Node findNode(Document doc, String name) {
> DocumentTraversal traversal = (DocumentTraversal)doc;
> NodeIterator iterator =
> traversal.createNodeIterator(doc.getDocumentElement(),
> NodeFilter.SHOW_ELEMENT, null, true);
> for (Node n = iterator.nextNode(); n != null; n =
> iterator.nextNode()) {
> if ((((Element)n).getTagName()).equals(name)) {
> return n;
> }
> }
>
> return null;
> }
>
> /**
> * update node's text content
> * @param doc
> * @param nodeName
> * @param value
> */
> private static void injectNodeValue(Document doc, String nodeName,
> String value) {
> Node n = findNode(doc, nodeName);
> if (n != null && (n.getTextContent() == null ||
> n.getTextContent().length() < 1)) {
> n.setTextContent(value);
> }
>
> }
>
> /**
> * Populate XML doc nodes with text values
> * @param doc
> */
> public static void changeDocContent(Document doc) {
> injectNodeValue(doc, "SF424_2_1:ProjectTitle", "My Test Title");
> injectNodeValue(doc, "SF424_2_1:Email", "itext_t...@test.com");
> injectNodeValue(doc, "SF424_2_1:ProjectStartDate", "2012-02-01");
> injectNodeValue(doc, "SF424_2_1:ProjectEndDate", "2013-02-28");
> }
>
> /**
> * Write XML doc out to file
> * @param doc
> * @throws TransformerException
> * @throws FileNotFoundException
> * @throws IOException
> */
> private static void docToFile(Document doc)
> throws TransformerException, FileNotFoundException, IOException {
> OutputStream out = new FileOutputStream(XML_FILE);
>
> Result outputTarget = new StreamResult(out);
> Transformer tf = TransformerFactory.newInstance().newTransformer();
> tf.setOutputProperty(OutputKeys.ENCODING, "UTF-8");
> tf.setOutputProperty(OutputKeys.INDENT, "yes");
> tf.transform(new DOMSource(doc), outputTarget);
> out.close();
> }
>
> public static void main(String[] args)
> throws FileNotFoundException, IOException, DocumentException,
> ParserConfigurationException, SAXException, TransformerException {
> populateXfaPdf populateXfaPdf = new populateXfaPdf();
>
> //get Reader Enabled XFA pdf
> File file = new File(SOURCE_FILE);
> FileInputStream fis = new FileInputStream(file);
>
> //Output stream for destination file
> OutputStream output = new FileOutputStream(DESTINATION_FILE);
>
> //iText
> PdfReader reader = new PdfReader(fis);
>
> //New Stamper in append mode - preserve reader enabling
> PdfStamper stamper = new PdfStamper(reader, output, '\0', true);
>
> //Get XFA form
> XfaForm xfa = new XfaForm(reader);
>
> //Extract XML doc
> Document doc = xfa.getDomDocument();
>
> //Manipulate XML
> changeDocContent(doc);
>
> //set xfa doc to changed document
> xfa.setDomDocument(doc);
>
> //set changed = true --> not sure what this does?
> xfa.setChanged(true);
>
> //The switch --> does not seem to work!
> XfaForm.setXfa(xfa, stamper.getReader(), stamper.getWriter());
>
> //write XML doc out to file to varify changes
> docToFile(doc);
>
> stamper.close();
> output.close();
> fis.close();
> }
> }
>
> --
> Regards,
> Mario
>
--
Regards,
Mario Ribeiro
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