[ 
https://issues.apache.org/jira/browse/MJAVADOC-449?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16364401#comment-16364401
 ] 

James Marble commented on MJAVADOC-449:
---------------------------------------

I'm getting a different error, but I still cannot run javadoc:aggregate on any 
multi-module JDK 9 project with at least one module-info.java. It always 
complains about a missing module descriptor for the root project:

{{[ERROR] no module descriptor for 
maven-javadoc-aggregate-test:maven-javadoc-aggregate-test}}

This happens on javadoc:aggregate or a site build that is configured for 
javadoc:aggregate.
{code:java}
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Build Order:
[INFO] 
[INFO] maven-javadoc-aggregate-test
[INFO] maven-javadoc-aggregate-test-child
[INFO] 
[INFO] ------------------------------------------------------------------------
[INFO] Building maven-javadoc-aggregate-test 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] >>> maven-javadoc-plugin:3.0.0:aggregate (default-cli) > compile @ 
maven-javadoc-aggregate-test >>>
[INFO] 
[INFO] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
[INFO] Forking maven-javadoc-aggregate-test-child 0.0.1-SNAPSHOT
[INFO] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
[INFO] 
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ 
maven-javadoc-aggregate-test-child ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory 
C:\Users\jm6534\Documents\maven-javadoc-plugin-aggregate-test\maven-javadoc-aggregate-test-child\src\main\resources
[INFO] 
[INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ 
maven-javadoc-aggregate-test-child ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 3 source files to 
C:\Users\jm6534\Documents\maven-javadoc-plugin-aggregate-test\maven-javadoc-aggregate-test-child\target\classes
[INFO] 
[INFO] <<< maven-javadoc-plugin:3.0.0:aggregate (default-cli) < compile @ 
maven-javadoc-aggregate-test <<<
[INFO] 
[INFO] --- maven-javadoc-plugin:3.0.0:aggregate (default-cli) @ 
maven-javadoc-aggregate-test ---
[ERROR] no module descriptor for 
maven-javadoc-aggregate-test:maven-javadoc-aggregate-test
[INFO] 
Loading source file 
C:\Users\jm6534\Documents\maven-javadoc-plugin-aggregate-test\maven-javadoc-aggregate-test-child\src\main\java\module-info.java...
1 error
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO] 
[INFO] maven-javadoc-aggregate-test ....................... FAILURE [ 5.050 s]
[INFO] maven-javadoc-aggregate-test-child ................. SKIPPED
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 5.313 s
[INFO] Finished at: 2018-02-14T08:46:47-08:00
[INFO] Final Memory: 20M/65M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal 
org.apache.maven.plugins:maven-javadoc-plugin:3.0.0:aggregate (default-cli) on 
project maven-javadoc-aggregate-test: An error has occurred in Javadoc report 
generation:
[ERROR] Exit code: 1 - error: module not found: 
maven.javadoc.aggregate.test.child
[ERROR] 
[ERROR] Command line was: "C:\Program Files\Java\jdk-9.0.1\bin\javadoc.exe" 
@options @packages @argfile
[ERROR] 
[ERROR] Refer to the generated Javadoc files in 
'C:\Users\jm6534\Documents\maven-javadoc-plugin-aggregate-test\target\site\apidocs'
 dir.
[ERROR] -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e 
switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please 
read the following articles:
[ERROR] [Help 1] 
http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
{code}
Attached is a minimal example that produces this error. Deleting 
module-info.java "fixes" the problem. [^maven-javadoc-plugin-aggregate-test.zip]

> javadoc:aggregate fails with JDK 9
> ----------------------------------
>
>                 Key: MJAVADOC-449
>                 URL: https://issues.apache.org/jira/browse/MJAVADOC-449
>             Project: Maven Javadoc Plugin
>          Issue Type: Bug
>    Affects Versions: 2.10.3
>            Reporter: Hervé Boutemy
>            Assignee: Robert Scholte
>            Priority: Major
>         Attachments: maven-javadoc-plugin-aggregate-test.zip
>
>
> trying {{mvn -Preporting site}} with Maven core and maven-javadoc-plugin 
> upgraded to 2.10.4-SNAPSHOT to benefit from already JDK 9 related fixed 
> issues shows another one
> {noformat}[ERROR] Failed to execute goal 
> org.apache.maven.plugins:maven-site-plugin:3.4:site (default-site) on project 
> maven: Error generating maven-javadoc-plugin:2.10.4-SNAPSHOT:aggregate: 
> Unable to resolve artifact:groupId = 'org.apache.maven.plugin-tools'
> [ERROR] artifactId = 'maven-plugin-tools-javadoc'
> [ERROR] version = '3.4': Missing:
> [ERROR] ----------
> [ERROR] 1) com.sun:tools:jar:1.4.2
> [ERROR] 
> [ERROR] Try downloading the file manually from the project website.
> [ERROR] 
> [ERROR] Then, install it using the command:
> [ERROR] mvn install:install-file -DgroupId=com.sun -DartifactId=tools 
> -Dversion=1.4.2 -Dpackaging=jar -Dfile=/path/to/file
> [ERROR] 
> [ERROR] Alternatively, if you host your own repository you can deploy the 
> file there:
> [ERROR] mvn deploy:deploy-file -DgroupId=com.sun -DartifactId=tools 
> -Dversion=1.4.2 -Dpackaging=jar -Dfile=/path/to/file -Durl=[url] 
> -DrepositoryId=[id]
> [ERROR] 
> [ERROR] Path to dependency:
> [ERROR] 1) org.apache.maven.plugin-tools:maven-plugin-tools-javadoc:jar:3.4
> [ERROR] 2) com.sun:tools:jar:1.4.2
> [ERROR] 
> [ERROR] ----------
> [ERROR] 1 required artifact is missing.
> [ERROR] 
> [ERROR] for artifact:
> [ERROR] org.apache.maven.plugin-tools:maven-plugin-tools-javadoc:jar:3.4
> [ERROR] 
> [ERROR] from the specified remote repositories:
> [ERROR] apache.snapshots (http://repository.apache.org/snapshots, 
> releases=false, snapshots=true),
> [ERROR] central (https://repo.maven.apache.org/maven2, releases=true, 
> snapshots=false)
> [ERROR] -> [Help 1]
> [ERROR] 
> [ERROR] To see the full stack trace of the errors, re-run Maven with the -e 
> switch.
> [ERROR] Re-run Maven using the -X switch to enable full debug logging.
> [ERROR] 
> [ERROR] For more information about the errors and possible solutions, please 
> read the following articles:
> [ERROR] [Help 1] 
> http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException{noformat}



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