maven-plugin-jar throws an exception when building test:jar goal with maven 3.0

[Amit Phadke <ap...@yahoo-inc.com>]

Hey Guys,

I am using the maven-jar plugin to create the test jar, but getting an exception like below.
I am running this with maven 3.0.2, jdk 1.6.0_24 and have tried various versions for maven-jar plugin(currently at 2.2), but all end up with same error as below.
It actually does the build the test.jar, but fails with the error below.

This looked relevant, but did not find a resolution http://jira.codehaus.org/browse/MNG-2899
Any ideas?
Thanks
Amit

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-jar-plugin:2.2:test-jar (default) on project coke_chunks_hbase: Execution default of goal org.apache.maven.plugins:maven-jar-plugin:2.2:test-jar failed. NullPointerException -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-jar-plugin:2.2:test-jar (default) on project coke_chunks_hbase: Execution default of goal org.apache.maven.plugins:maven-jar-plugin:2.2:test-jar failed.
  at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:225)
  at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
  at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
  at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)
  at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
  at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
  at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
  at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:319)
  at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
  at org.apache.maven.cli.MavenCli.execute(MavenCli.java:534)
  at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196)
  at org.apache.maven.cli.MavenCli.main(MavenCli.java:141)
  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  at java.lang.reflect.Method.invoke(Method.java:597)
  at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290)
  at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)
  at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409)
  at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352)
Caused by: org.apache.maven.plugin.PluginExecutionException: Execution default of goal org.apache.maven.plugins:maven-jar-plugin:2.2:test-jar failed.
  at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:116)
  at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)
  ... 19 more
Caused by: java.lang.NullPointerException
  at org.apache.maven.project.artifact.AttachedArtifact.getVersion(AttachedArtifact.java:137)
  at org.apache.maven.artifact.DefaultArtifact.validateIdentity(DefaultArtifact.java:148)
  at org.apache.maven.artifact.DefaultArtifact.<init>(DefaultArtifact.java:123)
  at org.apache.maven.project.artifact.AttachedArtifact.<init>(AttachedArtifact.java:48)
  at org.apache.maven.project.DefaultMavenProjectHelper.attachArtifact(DefaultMavenProjectHelper.java:60)
  at org.apache.maven.plugin.jar.AbstractJarMojo.execute(AbstractJarMojo.java:242)
  at org.apache.maven.plugin.jar.TestJarMojo.execute(TestJarMojo.java:85)
  at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:107)
  ... 20 more
[ERROR]
[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/PluginExecutionException


Thanks
Amit

Re: maven-plugin-jar throws an exception when building test:jar goal with maven 3.0

[Karl Heinz Marbaise <kh...@gmx.de>]

Hi Amit,

you should update the maven-jar-plugin to version 2.3.1, cause
i'm not sure if this is caused by this old version...

Kind regards
Karl Heinz Marbaise
-- 
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Dipl.Ing.(FH) Karl Heinz Marbaise        ICQ#: 135949029
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