Hello all.
I need help! I am trying to use iText to build a PDF composed of several
other PDFs.and then add some dynamic content. The code below is what I
have so far. It does not seem to take the page additions and the header
and footers.
protected void doPost(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException
{
try {
ByteArrayOutputStream baos = new
ByteArrayOutputStream();
//concatinate documents
PdfCopyFields copy = new PdfCopyFields(baos);
copy.addDocument(new
PdfReader("c:\\coverpage.pdf"));
copy.addDocument(new
PdfReader("c:\\BO_INTRO.pdf"));
copy.close();
//Update form field(s)
PdfReader reader = new
PdfReader(baos.toByteArray());
PdfStamper stamper = new
PdfStamper(reader,baos);
AcroFields form = stamper.getAcroFields();
form.setField("groupName", "My Group");
stamper.setFormFlattening(true);
stamper.close();
reader = new PdfReader(baos.toByteArray());
//Add dynamic content.
Document document = new
Document(reader.getPageSizeWithRotation(1));
document.open();
document.newPage();
document.add(new Paragraph("Hello World"));
document.add(new Paragraph(new
Date().toString()));
document.newPage();
document.add(new Paragraph("Hello World
Again"));
document.add(new Paragraph(new
Date().toString()));
//Add header and footer
document.setHeader(new HeaderFooter(new
Phrase("This is a header"),false));
document.setFooter(new HeaderFooter(new
Phrase("This is a footer"),true));
document.close();
response.setHeader("Expires", "0");
response.setHeader("Cache-Control",
"must-revalidate, post-check=0, pre-check=0");
response.setHeader("Pragma", "public");
response.setContentType("application/pdf");
response.setContentLength(baos.size());
ServletOutputStream out =
response.getOutputStream();
baos.writeTo(out);
out.flush();
} catch (DocumentException e) {
e.printStackTrace();
}
}
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