Hello, I just decovered a bug in PdfStamperImp (line 216). PdfStamperImp tries to read producer info from (oldInfo) PdfDictionary whenever oldInfo is not null. But producer information may in some cases not be contained in the oldInfo. However, PdfStamperImp expects producer info to be available if oldInfo is not null and wants to read it which causes a NullpointerException.
I fixed the code this way: int skipInfo = -1; PRIndirectReference iInfo = (PRIndirectReference)reader.trailer.get(PdfName.INFO); PdfDictionary oldInfo = (PdfDictionary)PdfReader.getPdfObject(iInfo); String producer = null; if (iInfo != null) skipInfo = iInfo.getNumber(); if (oldInfo != null) if (oldInfo.getAsString(PdfName.PRODUCER) != null) producer = oldInfo.getAsString(PdfName.PRODUCER).value; else producer = "unknown"; if (producer == null) { producer = Document.getVersion(); } else if (producer.indexOf(Document.getProduct()) == -1) { StringBuffer buf = new StringBuffer(producer); buf.append("; modified using "); buf.append(Document.getVersion()); producer = buf.toString(); } Kind regards Markus Zuberbühler -- Neu: GMX Doppel-FLAT mit Internet-Flatrate + Telefon-Flatrate für nur 19,99 Euro/mtl.!* http://portal.gmx.net/de/go/dsl02 ------------------------------------------------------------------------------ _______________________________________________ iText-questions mailing list iText-questions@lists.sourceforge.net 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/