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https://issues.apache.org/jira/browse/MJLINK-4?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16201932#comment-16201932
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ASF GitHub Bot commented on MJLINK-4:
-------------------------------------
GitHub user apetrelli opened a pull request:
https://github.com/apache/maven-plugins/pull/133
MJLINK-4 NPE on execution
Using Aether to resolve artifacts. Upgraded to Maven 3.1.1.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/apetrelli/maven-plugins trunk
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/maven-plugins/pull/133.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #133
----
commit 0b28bd67adae89a1c6ad1d986e3be7156a99b848
Author: anpetrel <anpetrel@anpetrel-hp-probook-450-g4>
Date: 2017-10-12T13:24:45Z
MJLINK-4 NPE on execution
Using Aether to resolve artifacts. Upgraded to Maven 3.1.1.
----
> NPE on execution
> -----------------
>
> Key: MJLINK-4
> URL: https://issues.apache.org/jira/browse/MJLINK-4
> Project: Maven JLink Plugin
> Issue Type: Bug
> Affects Versions: 3.0.0-alpha-1
> Environment: Ubuntu 16.04.3 LTS
> Linux 4.4.0-93-generic
> Reporter: Johannes Boesl
>
> When I try to run my maven build I get the following exception:
> {quote}[ERROR] Failed to execute goal
> org.apache.maven.plugins:maven-jlink-plugin:3.0.0-alpha-1:jlink
> (default-jlink) on project jloadr-jre: Execution default-jlink of goal
> org.apache.maven.plugins:maven-jlink-plugin:3.0.0-alpha-1:jlink failed.:
> NullPointerException -> [Help 1]
> org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute
> goal org.apache.maven.plugins:maven-jlink-plugin:3.0.0-alpha-1:jlink
> (default-jlink) on project jloadr-jre: Execution default-jlink of goal
> org.apache.maven.plugins:maven-jlink-plugin:3.0.0-alpha-1:jlink failed.
> at
> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:213)
> at
> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:154)
> at
> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:146)
> at
> org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:117)
> at
> org.apache.maven.lifecycle.internal.builder.multithreaded.MultiThreadedBuilder$1.call(MultiThreadedBuilder.java:200)
> at
> org.apache.maven.lifecycle.internal.builder.multithreaded.MultiThreadedBuilder$1.call(MultiThreadedBuilder.java:196)
> at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
> at
> java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:514)
> at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
> at
> java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
> at
> java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
> at java.base/java.lang.Thread.run(Thread.java:844)
> Caused by: org.apache.maven.plugin.PluginExecutionException: Execution
> default-jlink of goal
> org.apache.maven.plugins:maven-jlink-plugin:3.0.0-alpha-1:jlink failed.
> at
> org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:145)
> at
> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:208)
> ... 11 more
> Caused by: java.lang.NullPointerException
> at
> org.codehaus.plexus.languages.java.jpms.ResolvePathsRequest$1.toPath(ResolvePathsRequest.java:52)
> at
> org.codehaus.plexus.languages.java.jpms.ResolvePathsRequest$1.toPath(ResolvePathsRequest.java:48)
> at
> org.codehaus.plexus.languages.java.jpms.LocationManager.resolvePaths(LocationManager.java:109)
> at
> org.apache.maven.plugins.jlink.JLinkMojo.preparePaths(JLinkMojo.java:347)
> at org.apache.maven.plugins.jlink.JLinkMojo.execute(JLinkMojo.java:264)
> at
> org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:134)
> ... 12 more{quote}
> The cause seems to be that the following code in line 337 in JLinkMojo
> returns a collection with only 'null' entries:
> {{Collection<File> dependencyArtifacts = getCompileClasspathElements(
> getProject() );}}
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