Am 01.09.2015 um 11:26 schrieb Lachezar Dobrev:
Hello all.
I'm tasked with providing a service to generate PDFs from template PDFs
by replacing text place holders and image place holders with data from a
database.
For replacing text we decided to use Form Fields to keep minimal effect
on the page layout, and to avoid problems with texts being split into parts
by the editor.
Replacing images is also achievable using
COSStream.replaceWithStream(COSStream).
Q1: The replaceWithStream method is being deprecated. What can I use to
do the same thing in PDFBox 2? I tried stream-copying, but I get a
"WARNING: DCTFilter#encode is not implemented yet, skipping this stream."
and the image disappears from the output file.
If you want to copy a JPEG, you should use createRawInputStream().
The JPEG should be of the same size and same colorspace than the
original image.
Alternatively - just put nothing in the templare, and simply put an
image of whatever size you want with traditional methods (see image
handling in PDPageContentStream)
Q2: Is there any way to identify which image is what? Form fields have
Mapping Name that I can use to detect which field needs to contain what,
but I can not find a way to get some user-controllable identifier for an
image. Any thoughts?
Images do have a name in the resources. So it should work if you do the
template yourself.
Tilman
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