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https://issues.apache.org/jira/browse/MNG-6543?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16731003#comment-16731003
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Hervé Boutemy commented on MNG-6543:
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[~slachiewicz]thank you for the test: I could at least check that the issue
happens already with Java 9, and not only with Java 11.
And of course, most importantly, I could check that this ClassWorlds 2.6.0
release fixes the issue :)
what I dislike in this example is that the symptom is really hard to link with
the root cause:
{noformat}Caused by: java.lang.IllegalArgumentException: Prefix '' is already
bound to ''
at com.sun.xml.txw2.StartTag.addNamespaceDecl (StartTag.java:191)
at com.sun.xml.txw2.ContainerElement._namespace (ContainerElement.java:333)
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke
(NativeMethodAccessorImpl.java:62)
at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke
(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke (Method.java:564)
at com.sun.xml.txw2.ContainerElement.invoke (ContainerElement.java:134)
at com.sun.proxy.$Proxy31._namespace (Unknown Source)
at com.sun.tools.xjc.addon.episode.PluginImpl.run (PluginImpl.java:174)
at com.sun.tools.xjc.model.Model.generateCode (Model.java:292)
at com.sun.tools.xjc.Driver.run (Driver.java:384)
at
org.codehaus.mojo.jaxb2.javageneration.AbstractJavaGeneratorMojo.performExecution
(AbstractJavaGeneratorMojo.java:468){noformat}
did you have any chance to test with something related to package annotations,
since it was told this is something happening quite frequently?
> Upgrade plexus classworld to support java 9+ ClassLoader.findClass(String
> moduleName, String name) in Mojos
> -----------------------------------------------------------------------------------------------------------
>
> Key: MNG-6543
> URL: https://issues.apache.org/jira/browse/MNG-6543
> Project: Maven
> Issue Type: Bug
> Components: Class Loading
> Affects Versions: 3.6.0
> Reporter: Romain Manni-Bucau
> Assignee: Sylwester Lachiewicz
> Priority: Major
> Fix For: 3.6.1
>
> Attachments: MNG-6543-xjc.zip
>
>
> Goal is to include
> https://github.com/codehaus-plexus/plexus-classworlds/pull/4 in Maven and
> enable Mojos using this Java 9 new JPMS API to work under java 9+
> see [Java 9 ClassLoader.findClass(String moduleName,String
> name)|https://docs.oracle.com/javase/9/docs/api/java/lang/ClassLoader.html#findClass-java.lang.String-java.lang.String-]
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