Johannes Boesl created MJLINK-4:
-----------------------------------
Summary: 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:
{{[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}}
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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