ignicolist

Display watermark in PDF documents from a byte[]

byte[] docB = null;
docB = doc.getContent();

ByteArrayOutputStream baos = new ByteArrayOutputStream();
             
               PdfReader reader = new PdfReader(docB);
                int n = reader.getNumberOfPages();
                PdfStamper stamp = new PdfStamper(reader, baos);
                   int i = 0;
                   PdfContentByte under;
                   Image img = Image.getInstance("iconCsn.jpg");
                   img.setAbsolutePosition(200, 400);
                   while (i < n) {
                     i++;
                     under = stamp.getUnderContent(i);
                     under.addImage(img);
                   }
                   stamp.close();          
                 
                   getResponse().setHeader("Expires", "0");
                   getResponse().setHeader("Cache-Control", "must-revalidate, post-check=0,pre-check=0");
                   getResponse().setHeader("Pragma", "public");
                   getResponse().setContentType("application/pdf");
                   getResponse().setContentLength(baos.size());
                   ServletOutputStream out = getResponse().getOutputStream();
                   baos.writeTo(out);
                   out.flush();

This show the pdf with waterMark in the client.