Adobe CQ Appends Backcover to Pages with .pdf Extension
In this post, I'll show how to render a PDF document with an additional PDF page appended as a back-cover. This PDF back cover can not be done by PDF Rewriter, as an Adobe staff confirmed PDF Rewriter (used Apache FOP 0.95) has yet to support merging PDF files.
**UPDATE: External links to pdf-files on http-servers and https-servers supported since Apache FOP 1.1.
For merging PDF files, I'll be using a Java PDF library - pdfbox. For this, we need pdfbox app OSGi bundle/jar (1.8.2 as of this writing or the latest version) deployed in the Felix OSGi container so we can develop a .jsp to call into the API for merging PDFs. So get the library ready in your CQ environment with these steps:
download pdfbox app jar from pdf.apache.org
deploy/install and activate pdfbox-app-1.8.2.jar via CQ5 Web concole for bundles (e.g. http://localhost:4502/system/console/bundles)
Note: If you ever need to develop using CRXDE Lite to call into pdfbox library, you want to put the same OSGi bundle/jar to CRXDE's classpath in case you'd use CRXDE Lite as you development environment in the future. You can achieve this by putting a copy of downloaded pdfbox-app-1.8.2.jar to under /etc/crxde/profiles/default/libs/ in CRX via WebDav access (e.g., WebDav URL http://localhost:4502/crx/repository/crx.defult)
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