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https://issues.apache.org/jira/browse/TIKA-2987?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16977564#comment-16977564
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Bob Paulin commented on TIKA-2987:
----------------------------------
I happened to have the source of your project on my pc from a evaluation I was
doing last month. This is a cool add to the Sling project. I see 2 issues
when I run the build off of master. The first is that the tika-bundle appears
to be at 1.21 while tika-core and tika-parsers are at 1.22. These versions
should match so upgrade your tika-bundle to 1.22. The second is that
tika-parsers is included with tika-bundle. The tika-bundle embeds tika-parsers
and exports it's packages so you'll have 2 bundles exporting the same packages.
The error occurs when tika-core is searching for imports it might find the
tika-parsers instead of tika-bundle. Since tika-parsers does not have the
dependencies embedded and tika-bundle does not export the dependency package
the class is not found. This also explains why your approach to bundling the
metadata-extractor did not work. The tika-parsers include is probably a hold
over from sling. It might be a good idea to see if we can get sling to use the
bundle or you could look at excluding tika-parsers from your project. When I
remove tika-parsers from the osgi runtime the class is found successfully:
{code:java}
19.11.2019 09:19:27.684 *INFO* [oak-executor-68]
org.apache.sling.cms.core.internal.FileMetadataExtractorImpl Extracting
metadata from /static/DJI_0032.JPG
19.11.2019 09:19:28.429 *INFO* [oak-executor-68]
org.apache.sling.cms.core.internal.FileMetadataExtractorImpl Metadata extracted
from /static/DJI_0032.JPG
19.11.2019 09:19:28.432 *INFO* [oak-executor-64]
org.apache.sling.cms.core.internal.FileMetadataExtractorImpl Extracting
metadata from /static/DJI_0032.JPG
19.11.2019 09:19:28.518 *INFO* [oak-executor-64]
org.apache.sling.cms.core.internal.FileMetadataExtractorImpl Metadata extracted
from /static/DJI_0032.JPG
19.11.2019 09:19:33.582 *INFO* [oak-executor-68]
org.apache.sling.cms.core.internal.FileMetadataExtractorImpl Extracting
metadata from /static/DJI_0032.JPG
19.11.2019 09:19:33.663 *INFO* [oak-executor-68]
org.apache.sling.cms.core.internal.FileMetadataExtractorImpl Metadata extracted
from /static/DJI_0032.JPG {code}
> Extracting Metadata from JPEG Fails with Tika Bundle
> ----------------------------------------------------
>
> Key: TIKA-2987
> URL: https://issues.apache.org/jira/browse/TIKA-2987
> Project: Tika
> Issue Type: New Feature
> Affects Versions: 1.21
> Reporter: Dan Klco
> Priority: Major
>
> When attempting to extract metadata from a JPEG image with Tika OSGi Bundle,
> it fails with the following exception:
> {code:java}
> 18.11.2019 14:57:26.000 *ERROR* [oak-executor-37]
> org.apache.jackrabbit.oak.plugins.observation.FilteringDispatcher Uncaught
> exception in
> org.apache.jackrabbit.oak.plugins.observation.FilteringDispatcher@139d97c618.11.2019
> 14:57:26.000 *ERROR* [oak-executor-37]
> org.apache.jackrabbit.oak.plugins.observation.FilteringDispatcher Uncaught
> exception in
> org.apache.jackrabbit.oak.plugins.observation.filteringdispatc...@139d97c6java.lang.NoClassDefFoundError:
> com/drew/imaging/jpeg/JpegProcessingException at
> org.apache.tika.parser.jpeg.JpegParser.parse(JpegParser.java:58) at
> org.apache.tika.parser.CompositeParser.parse(CompositeParser.java:280)
> [org.apache.tika.core:1.22.0] at
> org.apache.tika.parser.CompositeParser.parse(CompositeParser.java:280)
> [org.apache.tika.core:1.22.0] at
> org.apache.tika.parser.CompositeParser.parse(CompositeParser.java:280)
> [org.apache.tika.core:1.22.0] at
> org.apache.tika.parser.AutoDetectParser.parse(AutoDetectParser.java:143)
> [org.apache.tika.core:1.22.0] at
> org.apache.sling.cms.core.internal.FileMetadataExtractorImpl.extractMetadata(FileMetadataExtractorImpl.java:148)
> [org.apache.sling.cms.core:0.12.1.SNAPSHOT] at
> org.apache.sling.cms.core.internal.FileMetadataExtractorImpl.updateMetadata(FileMetadataExtractorImpl.java:123)
> [org.apache.sling.cms.core:0.12.1.SNAPSHOT] at
> org.apache.sling.cms.core.internal.listeners.FileMetadataExtractorListener.handleChange(FileMetadataExtractorListener.java:59)
> [org.apache.sling.cms.core:0.12.1.SNAPSHOT] at
> org.apache.sling.cms.core.internal.listeners.FileMetadataExtractorListener.onChange(FileMetadataExtractorListener.java:74)
> [org.apache.sling.cms.core:0.12.1.SNAPSHOT] at
> org.apache.sling.resourceresolver.impl.observation.BasicObservationReporter.reportChanges(BasicObservationReporter.java:211)
> [org.apache.sling.resourceresolver:1.6.14] at
> org.apache.sling.jcr.resource.internal.JcrResourceListener.onEvent(JcrResourceListener.java:155)
> [org.apache.sling.jcr.resource:3.0.18] at
> org.apache.jackrabbit.commons.observation.ListenerTracker$1.onEvent(ListenerTracker.java:190)
> [org.apache.jackrabbit.jackrabbit-jcr-commons:2.18.2] at
> org.apache.jackrabbit.oak.jcr.observation.ChangeProcessor.contentChanged(ChangeProcessor.java:513)
> [org.apache.jackrabbit.oak-jcr:1.16.0] at
> org.apache.jackrabbit.oak.plugins.observation.FilteringDispatcher.contentChanged(FilteringDispatcher.java:52)
> [org.apache.jackrabbit.oak-core:1.16.0] at
> org.apache.jackrabbit.oak.spi.commit.BackgroundObserver$1$1.call(BackgroundObserver.java:127)
> [org.apache.jackrabbit.oak-store-spi:1.16.0] at
> org.apache.jackrabbit.oak.spi.commit.BackgroundObserver$1$1.call(BackgroundObserver.java:121)
> [org.apache.jackrabbit.oak-store-spi:1.16.0] at
> java.util.concurrent.FutureTask.run(FutureTask.java:266) at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748)Caused by:
> java.lang.ClassNotFoundException:
> com.drew.imaging.jpeg.JpegProcessingException not found by
> org.apache.tika.parsers [67] at
> org.apache.felix.framework.BundleWiringImpl.findClassOrResourceByDelegation(BundleWiringImpl.java:1597)
> at
> org.apache.felix.framework.BundleWiringImpl.access$300(BundleWiringImpl.java:79)
> at
> org.apache.felix.framework.BundleWiringImpl$BundleClassLoader.loadClass(BundleWiringImpl.java:1982)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ... 20 common
> frames omitted
> {code}
> It seems to have something to do with the way the Drew Noakes MetadaExtractor
> is embedded into the Tika Bundle. I have tried supplying the metadata
> extractor as a separate bundle, even including the Adobe XMP Core inline and
> Tika does fails with the same issue.
> You can reproduce the issue in the [Apache Sling
> CMS|[https://github.com/apache/sling-org-apache-sling-app-cms]] by starting
> the app, uploading a JPEG file and seeing the log at sling/logs/error.log
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