The problem is that PDF are binary. If you must pass it as a string encoded it first as base64 and decode it before delivering it to PdfReader.
Paulo > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On > Behalf Of Adriano Leite Ribero > Sent: Thursday, November 15, 2007 8:47 AM > To: itext-questions@lists.sourceforge.net > Subject: [iText-questions] Watermark on a pdf wich is > embedded in a browser > > Hi, > > I am trying to add some watermark to a pdf document. I've followed > correctly the example of the file "AddWatermarkPageNumbers.java" from > "http://itextdocs.lowagie.com/tutorial/general/copystamp/index.php";, > and it works properly. I have made some changes to fit the method in > that java file to my purpose without problems, and renamed the method > in it as "addWaterMark", so my method preWaterMark1, which calls it, > works fine: > > public static void preWaterMark1(String nameOriginalFile, String > text, String image, String nameOutputFile) { > try { > PdfReader reader = new PdfReader(nameOriginalFile); > PdfStamper stamp = new PdfStamper(reader, new > FileOutputStream(nameOutputFile)); > addWaterMark(reader, stamp, text, image); > } catch (Exception e){ > System.out.println("MarcaDeAgua.preWaterMark -> > Excepción: " + e); > } > } > > private static void addWaterMark(PdfReader reader, PdfStamper stamp, > String text, String image){... /*works ok*/} > > > The problem is that i need to do the same with pdf documents that > are not files, they are just in the browser. I start from a String > having the content of a document of that kind, and, following the same > steps I've written preWaterMark2, which uses the same method to write > the watermark. But what I get is just the pdf without any visible > changes, I can´t see any watermark. But I know the String having the > content of the pdf document has changed. > > public static String preWaterMark2(String pdfContent, String text, > String image){ > ByteArrayOutputStream baos = new ByteArrayOutputStream(); > try { > PdfReader reader = new > PdfReader(pdfContent.getBytes("ISO-8859-1")); > PdfStamper stamp = new PdfStamper(reader, baos); > addWaterMark(reader, stamp, text, image); > } catch (Exception de){ > de.printStackTrace(); > } > String ret = ""; > try{ > if (baos.toString()!= null) > ret = baos.toString(); > } catch (Exception e){ > System.out.println("MarcaDeAgua.preWaterMark -> Excepción: " + > e.getMessage()); > e.printStackTrace(); > } > return ret; > } > > I guess the problem could be related to the transforming process > between the String having the PDF content and the byte[] with the same > data. I have tryed to change the "ISO-8859-1", but it keeps on showing > me a PDF without any watermark. > > Does anybody know what could be the problem? > > Lot´s of thanks, > Adriano. Aviso Legal: Esta mensagem é destinada exclusivamente ao destinatário. Pode conter informação confidencial ou legalmente protegida. A incorrecta transmissão desta mensagem não significa a perca de confidencialidade. Se esta mensagem for recebida por engano, por favor envie-a de volta para o remetente e apague-a do seu sistema de imediato. É proibido a qualquer pessoa que não o destinatário de usar, revelar ou distribuir qualquer parte desta mensagem. Disclaimer: This message is destined exclusively to the intended receiver. It may contain confidential or legally protected information. The incorrect transmission of this message does not mean the loss of its confidentiality. If this message is received by mistake, please send it back to the sender and delete it from your system immediately. It is forbidden to any person who is not the intended receiver to use, distribute or copy any part of this message. ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ iText-questions mailing list iText-questions@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/itext-questions Buy the iText book: http://itext.ugent.be/itext-in-action/
