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https://issues.apache.org/jira/browse/MJAR-253?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16517310#comment-16517310
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Karl Heinz Marbaise commented on MJAR-253:
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So after rereading the description I'm getting the impression you are doing
things wrong. If you like to create a zip via maven-assembly you can create
different jars by having different modules which produce appropriate jar's
which can simply gathered together with an assembly descriptor...The
{{finalName}} field not the correct way to go...apart from that it will only
change the name which is created in the {{target}} directory which brings my to
the conclusion that you are using a file based assembly descriptor approach...
> Since 3.0.0 builds fail with You have to use a classifier to attach
> supplemental artifacts to the project instead of replacing them.
> ------------------------------------------------------------------------------------------------------------------------------------
>
> Key: MJAR-253
> URL: https://issues.apache.org/jira/browse/MJAR-253
> Project: Maven JAR Plugin
> Issue Type: Bug
> Affects Versions: 3.0.0, 3.0.1, 3.0.2, 3.1.0
> Reporter: J.Cranendonk
> Priority: Minor
>
> See also:
> [https://stackoverflow.com/questions/40964500/maven-jar-plugin-3-0-2-error-you-have-to-use-a-classifier-to-attach-supplementa]
> https://issues.apache.org/jira/browse/MJAR-198?focusedCommentId=16420958&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-16420958
> https://issues.apache.org/jira/browse/MJAR-198?focusedCommentId=16516772&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-16516772
> Builds where multiple jars were created with different names using the
> finalName field (for example to create jars to put together in an assembly)
> are failing since version 3.0.0 of the plugin.
> Apparently cause they now require a classifier field to be set:
> You have to use a classifier to attach supplemental artifacts to the project
> instead of replacing them.
> The problem with fixing this by setting a classifier is that it gets added
> after the finalName field, including a dash, which means the final jar has
> the wrong name.
>
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