Hello All,
We have a requirement to add watermark (text) to every
page of the existing PDF document. After browsing the
forum, I could find that adding watermark to existing
PDF can be done using PDFStamper class.
I am posting the sample code below.
try
{
PdfReader reader = new
PdfReader(getFileAsByteArray("c:\\in.pdf"));
ByteArrayOutputStream out = new
ByteArrayOutputStream();
PdfStamper stamper = new PdfStamper(reader,out);
BaseFont bf =
BaseFont.createFont(BaseFont.HELVETICA,BaseFont.WINANSI,
BaseFont.EMBEDDED);
PdfContentByte over;
int total = reader.getNumberOfPages() + 1;
for (int i = 1; i < total; i++)
{
over = stamper.getOverContent(i);
over.beginText();
over.setFontAndSize(bf, 10);
over.setTextMatrix(10, 10);
over.showText("This document was printed from
Test
Env");
over.setFontAndSize(bf, 10);
over.endText();
}
stamper.close();
byte[] result = out.toByteArray();
OutputStream os = new
FileOutputStream("c:\\out.pdf");
os.write(result);
os.close();
}
catch(Exception e)
{
e.printStackTrace();
}
However, I would like to hide the watermark text when
viewing the document, but while priniting, I should be
able to print the PDF along with added watermark text.
I am not sure if this is possible with PDFStamper?
Please share your experience on this and let me know
if this can be doable?
Thanks,
Vijay
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