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https://issues.apache.org/jira/browse/PDFBOX-2525?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14228171#comment-14228171
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Marcus Ilgner edited comment on PDFBOX-2525 at 11/28/14 9:16 AM:
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Just attached the two versions. Before (letterhead) and after (rechnung). To
make things easy, I used an empty PDF document as the base to overlay on.
[~lehmi] I actually did look at OverlayPDF, too, but it uses the
{{org.apache.pdfbox.util.Overlay}} class which only works with files, not
in-memory. If push comes to shove, I'll need to write things to temporary files
but would like to avoid the disk I/O if possible. Otherwise I'll look at the
source and check whether it can be adapted to work with {{PDDocument}}, too.
was (Author: milgner):
Before (letterhead) and after (rechnung)
> Overlay: data black & white after import
> ----------------------------------------
>
> Key: PDFBOX-2525
> URL: https://issues.apache.org/jira/browse/PDFBOX-2525
> Project: PDFBox
> Issue Type: Bug
> Components: Utilities
> Affects Versions: 1.8.7, 1.8.8, 2.0.0
> Reporter: Marcus Ilgner
> Attachments: evopark_rechnung_14_10-2.pdf, letterhead.pdf
>
>
> After overlaying two documents, everything in the source is black & white
> only. I uploaded a screenshot to
> https://oc.evopark.de/public.php?service=files&t=0d7e4e172c30c23b260d3c96cc4986b5
> May relate to PDFBOX-2401.
> Some more details: I'm doing everything in-memory, not operating on files.
> This is the sample code:
> {code:java}
> public static byte[] mergeOntoLetterhead(byte[] originalPdf) throws
> IOException, COSVisitorException {
> PDDocument pdf = PDDocument.load(new
> ByteArrayInputStream(originalPdf));
> if (pdf.getNumberOfPages() == 0) {
> return originalPdf;
> }
> PDDocument template = readTemplate();
> if (null != template) {
> Overlay overlay = new Overlay();
> pdf = overlay.overlay(template, pdf);
> } else {
> logger.error("Could not load letterhead PDF");
> return originalPdf;
> }
> ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
> pdf.save(outputStream);
> return outputStream.toByteArray();
> }
> {code}
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