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https://issues.apache.org/jira/browse/PDFBOX-3769?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15986883#comment-15986883
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Tilman Hausherr commented on PDFBOX-3769:
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I was able to make it work:
- open the jar with a zip utility, e..g 7zip
- create the directory "services" in "META-INF" and insert a file named
"javax.imageio.spi.ImageReaderSpi", and as content it must have
"org.jpedal.jbig2.jai.JBIG2ImageReaderSpi" in it.
I don't know why this is so, I just looked at some jar files.
I was able to display one file, I don't know if it works with all files. Years
ago we observed that only the levigo plugin worked.
> Cannot read JBIG2 image when JBIG2-Image-Decoder is in path
> -----------------------------------------------------------
>
> Key: PDFBOX-3769
> URL: https://issues.apache.org/jira/browse/PDFBOX-3769
> Project: PDFBox
> Issue Type: Bug
> Affects Versions: 2.0.5
> Environment: Windows 10
> Reporter: Esteban Nicolas Ruiz
> Labels: jbig2
> Attachments: JBIG2-Image-Decoder.jar, jbig2.pdf
>
>
> I understand from the "Dependencies" page
> (https://pdfbox.apache.org/2.0/dependencies.html) that "JBIG2 ImageIO" and
> "JBIG2-Image-Decoder" should be interchangeable but I get the following error
> message when using JBIG2-Image-Decoder:
> GRAVE: Cannot read JBIG2 image: jbig2-imageio is not installed
> Command line is:
> java -cp
> "JBIG2-Image-Decoder.jar;bcmail-jdk15on-1.54.jar;bcpkix-jdk15on-1.54.jar;bcprov-jdk15on-1.54.jar;commons-logging-1.2.jar;diffutils-1.3.0.jar;fontbox-2.0.5.jar;hamcrest-core-1.3.jar;jai-imageio-core-1.3.1.jar;jai-imageio-jpeg2000-1.3.0.jar;junit-4.12.jar;JBIG2-Image-Decoder.jar;pdfbox-app-2.0.5.jar"
> org.apache.pdfbox.tools.PDFToImage jbig2.pdf
> If I change JBIG2-Image-Decoder.jar for levigo-jbig2-imageio-1.6.5.jar then
> conversion is successfull:
> java -cp
> "levigo-jbig2-imageio-1.6.5.jar;bcmail-jdk15on-1.54.jar;bcpkix-jdk15on-1.54.jar;bcprov-jdk15on-1.54.jar;commons-logging-1.2.jar;diffutils-1.3.0.jar;fontbox-2.0.5.jar;hamcrest-core-1.3.jar;jai-imageio-core-1.3.1.jar;jai-imageio-jpeg2000-1.3.0.jar;junit-4.12.jar;JBIG2-Image-Decoder.jar;pdfbox-app-2.0.5.jar"
> org.apache.pdfbox.tools.PDFToImage jbig2.pdf
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