I was having a problem a month ago with reading JPEG2000 files on tomcat, that seemed identical to what is described in a posting to this list by Chris Gamache <https://plus.google.com/u/0/101607728077454498498?prsrc=4> <cgama...@gmail.com> on Jun 21 2017 with the subject "PDFBox JPEG2000 and Tomcat". Basically PDFBox was 'forgetting' about the JPEG2000 library at some point, and getting an error when reading a JPEG2000 file.
I reached out to Chris and he was kind enough to offer me his solution, which is to check for whether JPEG2000 is loaded before each call to PDFBox, and then reload it. And that seemed to resolve my problem. I recently upgraded to PDFBox 2.0.11, and removed the library levigo-jbig2-imageio-1.6.5.jar as those entry points were now being defined in pdfbox-app-2.0.11.jar. And what appears to be the same error is back. Running one JPEG2000 image is fine, but at some point I get the error 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:77) at org.apache.pdfbox.cos.COSStream.createInputStream(COSStream.java:175) at org.apache.pdfbox.cos.COSStream.createInputStream(COSStream.java:163) at org.apache.pdfbox.pdmodel.common.PDStream.createInputStream(PDStream.java:236) at org.apache.pdfbox.pdmodel.graphics.image.PDImageXObject.createInputStream(PDImageXObject.java:695) at org.apache.pdfbox.pdmodel.graphics.image.SampledImageReader.getStencilImage(SampledImageReader.java:91) at org.apache.pdfbox.pdmodel.graphics.image.PDImageXObject.getStencilImage(PDImageXObject.java:483) at org.apache.pdfbox.rendering.PageDrawer.drawImage(PageDrawer.java:1029) at org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:62) at org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:848) at org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:503) at org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:477) at org.apache.pdfbox.contentstream.PDFStreamEngine.processPage(PDFStreamEngine.java:150) at org.apache.pdfbox.rendering.PageDrawer.drawPage(PageDrawer.java:246) at org.apache.pdfbox.rendering.PDFRenderer.renderImage(PDFRenderer.java:225) at org.apache.pdfbox.rendering.PDFRenderer.renderImageWithDPI(PDFRenderer.java:150) Which is very similar to the error I got with PDFBox 2.0.7 and the levigo jar java.lang.NoClassDefFoundError: Could not initialize class com.levigo.jbig2.JBIG2ImageReader at com.levigo.jbig2.JBIG2ImageReaderSpi.createReaderInstance(JBIG2ImageReaderSpi.java:118) 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:120) at org.apache.pdfbox.filter.JBIG2Filter.decode(JBIG2Filter.java:54) at org.apache.pdfbox.cos.COSInputStream.create(COSInputStream.java:69) at org.apache.pdfbox.cos.COSStream.createInputStream(COSStream.java:167) at org.apache.pdfbox.pdmodel.common.PDStream.createInputStream(PDStream.java:235) at org.apache.pdfbox.pdmodel.graphics.image.PDImageXObject.<init>(PDImageXObject.java:125) at org.apache.pdfbox.pdmodel.graphics.PDXObject.createXObject(PDXObject.java:70) at org.apache.pdfbox.pdmodel.PDResources.getXObject(PDResources.java:409) at com.moneythumb.convert.i.processOperator(SourceFile:72) at org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:495) at org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:469) at org.apache.pdfbox.contentstream.PDFStreamEngine.processPage(PDFStreamEngine.java:150) Also the workaround from Chris was still in place, but did not appear to help, although it is not specific to any packaging. It checks whether the reader for format 'JPEG2000' canReadRaster() and if not calls IIORegistry.getDefaultInstance.registerApplicationClasspathSpis();. So my take is that PDFBox inherited whatever problem was there previously in the JBIG2 ImageIO plugin. And I am surprised that the workaround did not help - I assume the format is still known at 'JPEG2000', right?
