Generic disclaimer to read the book and/or look at the samples online.
Then you could also create a PdfCopy which is very similar to a PdfWriter.
Whether an additional file is created or not depends upon the output stream you
select. If you use a new FileOutputStream then you will need to specify a
destination for the physical file. If instead you use a BinaryOutputStream
(let's call it baos) then your output will only reside in memory. You can then
create a PDF from this BinaryOutputStream with new
PdfReader(baos.toByteArray()). Your PDF will exist in memory and can be
concatenated with other PDFs.
In short, create a PdfCopy of your file from the database using a
BinaryOutputStream. Then append the additional PDFs to this PdfCopy:
PdfReader reader = other PDF to append.
PdfCopy copy = new PdfCopy(document, baos);
for (int page = 0; page < reader.getNumberOfPages(); ) {
copy.addPage(copy.getImportedPage(reader, ++page));
}
Keep the same copy and repeat above until all PDFs have been appended. Then
close your baos and either send it back to the database or create a physical
file.
Thanks.
Ed McGee
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