CODEWITHSUNDEEP
javapdfitext
TheRed__
TheRed__

Reputation: 164

Add existing PDF document to opened document

Using iText 5.5.5. I have an open com.itextpdf.text.Document through a PdfWriter instance. At various points during construction of the document, I need to add in static PDF pages. The static pages are coming in the form of a byte[].

After following various examples on itextpdf.com, I am unable to mesh their examples with my use case. Here is the code:

Document trunk = new Document();
PdfWriter writer = PdfWriter.getInstance(trunk, getTrunkStream());
writer.setPageEvent(geTrunkPageEvent());
trunk.open();

....

PdfReader reader = new PdfReader(bytes);
// graft == my static content
Document graft = new Document(reader.getPageSizeWithRotation(1));
PdfCopy copy = new PdfCopy(graft, getTrunkStream());
graft.open();

int count = reader.getNumberOfPages();
for(int page = 0; page < count;) {
    copy.addPage(copy.getImportedPage(reader, ++page));
}

copy.freeReader(reader);
reader.close();

The code compiles and runs error free. But the graft pages fail to appear with the trunk pages.

Upvotes: 2

Views: 2718

Answers (1)

Sangeet Menon
Sangeet Menon

Reputation: 9915

Read the answer to this question Read BLOB (PDF Content) from database and edit and output PDF , for more detailed description

Use PdfContentByte to hold the PDF content to be added

 PdfContentByte cb = writer.getDirectContent();

Create a PdfImportedPage page object for each page you want to import from another document using getImportedPage() and add the page using to writer using addTemplate():

trunk.newPage();
page = writer.getImportedPage(pdfReader, pagenumber);
cb.addTemplate(page, 0, 0);

Make sure to close the document and the pdfReader.

Note: do not use this code snippet if you merely want to merge a bunch of files. The reason why you shouldn't do this, is explained in the answer to the question How to merge documents correctly?

Upvotes: 3

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