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https://issues.apache.org/jira/browse/PDFBOX-4671?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16957604#comment-16957604
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Luis Panadero Guardeño commented on PDFBOX-4671:
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Both services provides a way to replace both components implementations at
runtime. It would be fine and useful if this possibility was document somewhere.
On any case, the service provider for the logger isn't necessary anymore. Why
you need to re-invent SLF4J for only your library when you can use SLF4J (or
log4j2, or apache commons logging), that is what everyone is using ?
> NoClassDefFoundError: Could not initialize class
> org.apache.pdfbox.jbig2.JBIG2ImageReader
> -----------------------------------------------------------------------------------------
>
> Key: PDFBOX-4671
> URL: https://issues.apache.org/jira/browse/PDFBOX-4671
> Project: PDFBox
> Issue Type: Bug
> Components: JBIG2
> Affects Versions: 3.0.2 JBIG2
> Reporter: Luis Panadero Guardeño
> Priority: Major
> Attachments: jbig2 servlet failcase.tar.gz
>
>
> JBIG2 ImageIO plugin sometimes does a NoClassDefFoundError
> I'm using TwelveMonkeys IIOProviderContextListener to fix the problem of
> ImageIO with servlets, and additionally doing a
> {{ImageIO}}.{{scanForPlugins}}(). But this keeps happening randomly. Any idea
> where could be the problem ?
> This is happening with Tomcat 7 running over Oracle Java 8 (latest version)
>
> {code:java}
> java.lang.NoClassDefFoundError: Could not initialize class
> org.apache.pdfbox.jbig2.JBIG2ImageReader
> at
> org.apache.pdfbox.jbig2.JBIG2ImageReaderSpi.createReaderInstance(JBIG2ImageReaderSpi.java:117)
> at
> javax.imageio.spi.ImageReaderSpi.createReaderInstance(ImageReaderSpi.java:320)
> at javax.imageio.ImageIO$ImageReaderIterator.next(ImageIO.java:529)
> at javax.imageio.ImageIO$ImageReaderIterator.next(ImageIO.java:513)
> at org.apache.pdfbox.filter.Filter.findImageReader(Filter.java:155)
> at org.apache.pdfbox.filter.JBIG2Filter.decode(JBIG2Filter.java:67)
> at org.apache.pdfbox.cos.COSInputStream.create(COSInputStream.java:84)
> at org.apache.pdfbox.cos.COSStream.createInputStream(COSStream.java:175)
> at
> org.apache.pdfbox.pdmodel.common.PDStream.createInputStream(PDStream.java:241)
> at
> org.apache.pdfbox.pdmodel.graphics.image.PDImageXObject.createInputStream(PDImageXObject.java:735)
> at
> org.apache.pdfbox.pdmodel.graphics.image.SampledImageReader.from1Bit(SampledImageReader.java:253)
> at
> org.apache.pdfbox.pdmodel.graphics.image.SampledImageReader.getRGBImage(SampledImageReader.java:212)
> at
> org.apache.pdfbox.pdmodel.graphics.image.PDImageXObject.getImage(PDImageXObject.java:444)
> at
> org.apache.pdfbox.pdmodel.graphics.image.PDImageXObject.getImage(PDImageXObject.java:425)
> at org.apache.pdfbox.rendering.PageDrawer.drawImage(PageDrawer.java:1100)
> at
> org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:63)
> at
> org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:869)
> at
> org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:505)
> at
> org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:479)
> at
> org.apache.pdfbox.contentstream.PDFStreamEngine.processPage(PDFStreamEngine.java:152)
> at org.apache.pdfbox.rendering.PageDrawer.drawPage(PageDrawer.java:263)
> at org.apache.pdfbox.rendering.PDFRenderer.renderImage(PDFRenderer.java:321)
> at org.apache.pdfbox.rendering.PDFRenderer.renderImage(PDFRenderer.java:243)
> at org.apache.pdfbox.rendering.PDFRenderer.renderImage(PDFRenderer.java:203)
> at
> com.digibis.digiimage.pdf.pdfbox.PdfBoxPdfProcessor.getImageFromDocumentPage(PdfBoxPdfProcessor.java:105){code}
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