I am using iText to create a single PDF by merging a number of PDFs using PDFCopy. I need to create a TOC (not bookmarks) at the beginning of this document with clickable links to the first pages of each of the source PDFs.
Code to merge pdf
Document PDFJoinInJava = new Document();
PdfCopy PDFCombiner = new PdfCopy(PDFJoinInJava, outputStream);
PdfCopy.PageStamp stamp;
PDFJoinInJava.open();
PdfReader ReadInputPDF;
List<InputStream> pdfs = streamOfPDFFiles;
List<PdfReader> readers = new ArrayList<PdfReader>();
int totalPages = 0;
Iterator<InputStream> iteratorPDFs = pdfs.iterator();
for (; iteratorPDFs.hasNext(); pdfCounter++) {
InputStream pdf = iteratorPDFs.next();
PdfReader pdfReader = new PdfReader(pdf);
readers.add(pdfReader);
totalPages += pdfReader.getNumberOfPages();
pdf.close();
}
int number_of_pages;
int currentPageNumber = 0;
int pageOfCurrentReaderPDF = 0;
Iterator<PdfReader> iteratorPDFReader = readers.iterator();
PdfImportedPage page;
// Loop through the PDF files and add to the output.
int count = 1;
while (iteratorPDFReader.hasNext()) {
PdfReader pdfReader = iteratorPDFReader.next();
count++;
number_of_pages = pdfReader.getNumberOfPages();
// Create a new page in the target for each source page.
for (int pageNum = 0; pageNum < number_of_pages;) {
currentPageNumber++;
pageOfCurrentReaderPDF++;
page = PDFCombiner.getImportedPage(pdfReader, ++pageNum);
ColumnText.showTextAligned(stamp.getUnderContent(),
Element.ALIGN_RIGHT, new Phrase(String
.format("%d", currentPageNumber),new Font(FontFamily.TIMES_ROMAN,3)),
50, 50, 0);
stamp.alterContents();
PDFCombiner.addPage(page);
}
}
PDFJoinInJava.close();