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https://issues.apache.org/jira/browse/TIKA-2693?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16574706#comment-16574706
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Karl Wright commented on TIKA-2693:
-----------------------------------
Re: testing: I don't have a test setup here, and the user is not at liberty to
send documents to me that cause the problem. He says he's been in contact
with someone on the Tika team and has replaced all four Tika jars with ones
from nightly, and I think he replaced the POI jars with 4.0.0 ones earlier, but
don't know if he retained that change, since that's not supposed to work 100%.
Anyway, if he responds to my inquiry I will request he build new jars from the
branch that Tim created and see if they all work.
> Tika 1.17 uses the wrong classloader for reflection
> ---------------------------------------------------
>
> Key: TIKA-2693
> URL: https://issues.apache.org/jira/browse/TIKA-2693
> Project: Tika
> Issue Type: Bug
> Components: general
> Affects Versions: 1.17
> Reporter: Karl Wright
> Priority: Major
>
> I don't know whether this was addressed in 1.18, but Tika seemingly uses the
> wrong classloader when loading some classes by reflection.
> In ManifoldCF, there's a two-tiered classloader hierarchy. Tika runs in the
> higher class level. Its expectation is that classes that are loaded via
> reflection use the classloader associated with the class that is resolving
> the reflection, NOT the thread classloader. That's standard Java practice.
> But apparently there's a place where Tika doesn't do it that way:
> {code}
> Error tossed: org/apache/poi/POIXMLTextExtractor
> java.lang.NoClassDefFoundError: org/apache/poi/POIXMLTextExtractor
> at
> org.apache.tika.parser.microsoft.ooxml.OOXMLParser.parse(OOXMLParser.java:106)
> ~[?:?]
> at
> org.apache.tika.parser.CompositeParser.parse(CompositeParser.java:280) ~[?:?]
> at
> org.apache.tika.parser.CompositeParser.parse(CompositeParser.java:280) ~[?:?]
> at
> org.apache.tika.parser.AutoDetectParser.parse(AutoDetectParser.java:143)
> ~[?:?]
> at
> org.apache.manifoldcf.agents.transformation.tika.TikaParser.parse(TikaParser.java:74)
> ~[?:?]
> {code}
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