Cookbook

INTRODUCTION

Tutorial
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DOCXPath
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PRACTICAL JAVADOCX

Installation
Creating a new document
Working with templates
WordFragments
Adding content to a document
Adding content to a template
Headers and footers
Pictures and images
Graphic charts
HTML and CSS
Sections and properties
Styles
Blocks
Document transformations
Merging
More features

API DOCUMENTATION

Repair PDF documents

mergePDF is a method intended to combine PDF documents, available on Advanced and Premium liceses. It requires the documents to be internally correct, that means uncorrupted and unprotected.

In case of calling the method and obtaining the following error message

gzuncompress(): data error
Exception 'decodeFilterFlateDecode: invalid code'

it is necessary to repair the PDF document in order to correctly merge it.

The simplest tool to repair a PDF document is pdftocairo (Linux: https://www.mankier.com/1/pdftocairo, Windows: http://blog.alivate.com.au/poppler-windows/, macOS: http://macappstore.org/poppler/). After installing it, it is possible to capture the launched exception and repair the document with the Java methods exec, system or passthru.

The command that repairs a PDF is:

pdftocairo -pdf document.pdf document_repaired.pdf