try {
// we create a reader for a certain document
PdfReader reader = new PdfReader("ChapterSection.pdf");
int n = reader.getNumberOfPages();
// we create a stamper that will copy the document to a new file
PdfStamper stamp = new PdfStamper(reader, new FileOutputStream("watermark_pagenumbers.pdf"));
// adding some metadata
HashMap moreInfo = new HashMap();
moreInfo.put("Author", "Bruno Lowagie");
stamp.setMoreInfo(moreInfo);
// adding content to each page
int i = 0;
PdfContentByte under;
PdfContentByte over;
Image img = Image.getInstance("watermark.jpg");
BaseFont bf = BaseFont.createFont(BaseFont.HELVETICA, BaseFont.WINANSI, BaseFont.EMBEDDED);
img.setAbsolutePosition(200, 400);
while (i < n) {
i++;
// watermark under the existing page
under = stamp.getUnderContent(i);
under.addImage(img);
// text over the existing page
over = stamp.getOverContent(i);
over.beginText();
over.setFontAndSize(bf, 18);
over.setTextMatrix(30, 30);
over.showText("page " + i);
over.setFontAndSize(bf, 32);
over.showTextAligned(Element.ALIGN_LEFT, "DUPLICATE", 230, 430, 45);
over.endText();
}
// adding an extra page
stamp.insertPage(1, PageSize.A4);
over = stamp.getOverContent(1);
over.beginText();
over.setFontAndSize(bf, 18);
over.showTextAligned(Element.ALIGN_LEFT, "DUPLICATE OF AN EXISTING PDF DOCUMENT", 30, 600, 0);
over.endText();
// adding a page from another document
PdfReader reader2 = new PdfReader("SimpleAnnotations1.pdf");
under = stamp.getUnderContent(1);
under.addTemplate(stamp.getImportedPage(reader2, 3), 1, 0, 0, 1, 0, 0);
// closing PdfStamper will generate the new PDF file
stamp.close();
}
catch (Exception de) {
de.printStackTrace();
}
}