Good stuff. The only potential bug I can come up with (without actually running the code) is that the PDF Spec says the XFA key in an AcroForm dictionary may be a stream or an array.
In The Real World, Adobe is the only company that produces XFA forms, and (to the best of my knowledge) they always use an array... But better safe than sorry, and it's an easy code fix. --Mark Storer Senior Software Engineer Cardiff.com #include <disclaimer> typedef std::Disclaimer<Cardiff> DisCard; > -----Original Message----- > From: Hubert Felber [mailto:[email protected]] > Sent: Thursday, September 10, 2009 8:49 AM > To: [email protected] > Cc: [email protected] > Subject: [iText-questions] How to change URL of submit button in a XFA > > > > Hi, > > There recently was a question on how to do this. I have a > solution that > works. Maybe this is of interest to someone: > Hubert > > import java.io.FileOutputStream; > import java.io.ByteArrayInputStream; > import java.io.ByteArrayOutputStream; > import com.lowagie.text.pdf.*; > import javax.xml.parsers.DocumentBuilderFactory; > import javax.xml.parsers.DocumentBuilder; > import org.w3c.dom.Document; > import org.w3c.dom.Node; > import org.w3c.dom.ls.LSOutput; > import org.w3c.dom.bootstrap.DOMImplementationRegistry; > import org.apache.xerces.dom.CoreDOMImplementationImpl; > > > public class ChangeXFASubmitURL { > public static final String FORM = "d:\\test\\Lead-Rapport_V1a.pdf"; > public static final String RESULT = "d:\\test\\result.pdf"; > static final String url = > "http://hostname:40000/flw/pdf/1/?id=1858&sid=9e42d43a-96f4-11 > de-a9c0-5dc15587b754"; > public static final String buttonName = "submit"; // > you have to > know the name of the submit button field and this better be unique > > public static void main(String[] args) { > try { > PdfReader reader = new PdfReader(FORM); > PdfDictionary root = reader.getCatalog(); > PdfDictionary acroform = root.getAsDict(PdfName.ACROFORM); > PdfArray xfa = acroform.getAsArray(PdfName.XFA); > for (int i = 0; i < xfa.size(); i += 2) { > if ("template".equals(xfa.getAsString(i).toString())) { > PRStream s = (PRStream) xfa.getAsStream(i + 1); > byte[] b = PdfReader.getStreamBytes(s); > // use xerces > System.setProperty(DOMImplementationRegistry.PROPERTY, > "org.apache.xerces.dom.DOMImplementationSourceImpl"); > DocumentBuilderFactory factory = > DocumentBuilderFactory.newInstance(); > DocumentBuilder builder = factory.newDocumentBuilder(); > Document document = builder.parse(new > ByteArrayInputStream(b)); > ((Node) > document.getElementsByTagName(buttonName).item(0)).getAttribut > es().getNamedItem("target").setNodeValue(url); > > // make an LSOutput > DOMImplementationRegistry registry = > DOMImplementationRegistry.newInstance(); > CoreDOMImplementationImpl impl = (CoreDOMImplementationImpl) > registry.getDOMImplementation("LS"); > org.w3c.dom.ls.LSSerializer lsSerializer = > impl.createLSSerializer(); > LSOutput lsOutput = impl.createLSOutput(); > > ByteArrayOutputStream btOutputStream = new > ByteArrayOutputStream(); > lsOutput.setByteStream(btOutputStream); > lsSerializer.write(document, lsOutput); > byte[] bytes = ((ByteArrayOutputStream) > lsOutput.getByteStream()).toByteArray(); > // the xml writer always puts an xml header on top of the > file > // this has to be removed!! > String result = new String(bytes); > int ur = result.indexOf('>'); // remove <?xml > version="1.0" encoding="UTF-8"?> > result = result.substring(ur + 1); > s.setData(result.getBytes()); > PdfStamper stamper = new PdfStamper(reader, > new FileOutputStream(RESULT)); > stamper.close(); > > } > } > } catch (Exception e) { > e.printStackTrace(); > } > } > > } > > > > -------------------------------------------------------------- > ---------------- > Let Crystal Reports handle the reporting - Free Crystal > Reports 2008 30-Day > trial. Simplify your report design, integration and > deployment - and focus on > what you do best, core application coding. Discover what's new with > Crystal Reports now. http://p.sf.net/sfu/bobj-july > _______________________________________________ > iText-questions mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/itext-questions > > Buy the iText book: http://www.1t3xt.com/docs/book.php > Check the site with examples before you ask questions: http://www.1t3xt.info/examples/ You can also search the keywords list: http://1t3xt.info/tutorials/keywords/ ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ iText-questions mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/itext-questions Buy the iText book: http://www.1t3xt.com/docs/book.php Check the site with examples before you ask questions: http://www.1t3xt.info/examples/ You can also search the keywords list: http://1t3xt.info/tutorials/keywords/
