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https://issues.apache.org/jira/browse/MJAVADOC-673?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17309728#comment-17309728
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Michael Remijan commented on MJAVADOC-673:
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Thanks for the tip to downgrade to 3.0.1. I did this and the javadoc report is
able to complete without errors. However the aggregate report still fails with
3.0.1.
> Generating wrong commandline option for javadoc tool when using Java9+ modules
> ------------------------------------------------------------------------------
>
> Key: MJAVADOC-673
> URL: https://issues.apache.org/jira/browse/MJAVADOC-673
> Project: Maven Javadoc Plugin
> Issue Type: Bug
> Components: javadoc
> Affects Versions: 3.2.0
> Environment: MacOS, Window, Linux, Java 11.0.10 +
> With older java versions like 11.0.3 you will got more errors!
> Reporter: Kai Hofmann
> Priority: Blocker
> Labels: generate, java, javadoc, module, options
>
> When you checkout my open source
> [TemplateEnginel|https://github.com/PowerStat/TemplateEngine] and simply run
> {code:java}
> mvn javadoc:javadoc
> {code}
> you will get the following error message:
> {noformat}
> [INFO] <<< maven-javadoc-plugin:3.2.0:javadoc (default-cli) <
> generate-sources @ templateengine <<<
> [INFO]
> [INFO]
> [INFO] --- maven-javadoc-plugin:3.2.0:javadoc (default-cli) @ templateengine
> ---
> [INFO] No previous run data found, generating javadoc.
> [INFO]
> Loading source file
> D:\work\eclipse\java\github\TemplateEngine\src\main\java\module-info.java...
> 1 error
> [ERROR] Error while creating javadoc report:
> Exit code: 1 - error: module not found: de.powerstat.phplib.templateengine
> Command line was: cmd.exe /X /C
> "D:\Programme\Java\jdk-11.0.10\bin\javadoc.exe @options @packages @argfile"
> Refer to the generated Javadoc files in
> 'D:\work\eclipse\java\github\TemplateEngine\target\site\apidocs' dir.
> org.apache.maven.reporting.MavenReportException:
> Exit code: 1 - error: module not found: de.powerstat.phplib.templateengine
> Commandline was: cmd.exe /X /C "D:\Programme\Java\jdk-11.0.10\bin\javadoc.exe
> @options @packages @argfile"Refer to the generated Javadoc files in
> 'D:\work\eclipse\java\github\TemplateEngine\target\site\apidocs' dir.
> [...]{noformat}
> Now go to *target/site/apidocs*
> There you could run the generated script by *javadoc.bat*|*sh*
> Which results in the same error!
> Please note that the subdirectory *src/de.powerstat.phplib.templateengine* is
> empty.
> Now open the *options* file
> and remove the following lines:
> {code:java}
> --module-source-path
> 'D:/work/eclipse/java/github/TemplateEngine/target/site/apidocs/src'
> {code}
> Run the *javadoc.bat*|*sh* again.
> Now the error
> {noformat}
> error: module not found: de.powerstat.phplib.templateengine{noformat}
> is gone. And the javadocs are generated as expected!
>
> So for me it looks like the generated --module-source-path option for the
> javadoc command is wrong in this (and maybe other) context(s)!
>
> The generation happens in
> org.apache.maven.plugins.javadoc.AbstractJavadocMojo around line 5316.
>
> Because of the complexity of this code and it's context (maven Reactor) I am
> not able to provide a patch for this.
> But hopefully you could fix this fast, because it is a real blocker that
> makes maven javadoc generation for java 9+ modules imposible.
>
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