Nullpointer exception while executing assembly plugin

[Martin Schaub <ma...@gmail.com>]

Hi

I'm getting the following error while executing maven 3.0.3 on Windows and
Linux. The maven command was mvn clean install.
I guess it is not a bug, because it worked until Yesterday. It also works
sometimes, when I delete the whole local repository beforehand. But with a
non-empty local repository the error appears all the time.

Thanks for your help,
Martin


[ERROR] Failed to execute goal
org.apache.maven.plugins:maven-assembly-plugin:2.2.2:single (make-assembly)
on project release: Execution make-assembly of goal
org.apache.maven.plugins:maven-assembly-plugin:2.2.2:single failed.
NullPointerException -> [Help 1]

org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute
goal org.apache.maven.plugins:maven-assembly-plugin:2.2.2:single
(make-assembly) on project release: Execution make-assembly of goal
org.apache.maven.plugins:maven-assembly-plugin:2.2.2:single 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:537)

        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
make-assembly of goal
org.apache.maven.plugins:maven-assembly-plugin:2.2.2:single failed.

        at
org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:110)

        at
org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)

        ... 19 more

Caused by: java.lang.NullPointerException

        at
org.apache.maven.plugin.assembly.archive.archiver.AssemblyProxyArchiver$DefaultFileInfo.isFile(AssemblyProxyArchiver.java:871)

        at
org.apache.maven.plugin.assembly.filter.ComponentsXmlArchiverFileFilter.isSelected(ComponentsXmlArchiverFileFilter.java:193)

        at
org.apache.maven.plugin.assembly.archive.archiver.AssemblyProxyArchiver.acceptFile(AssemblyProxyArchiver.java:825)

        at
org.apache.maven.plugin.assembly.archive.archiver.AssemblyProxyArchiver.addFile(AssemblyProxyArchiver.java:476)

        at
org.apache.maven.plugin.assembly.archive.task.AddArtifactTask.execute(AddArtifactTask.java:212)

        at
org.apache.maven.plugin.assembly.archive.task.AddDependencySetsTask.addNormalArtifact(AddDependencySetsTask.java:351)

        at
org.apache.maven.plugin.assembly.archive.task.AddDependencySetsTask.addDependencySet(AddDependencySetsTask.java:186)

        at
org.apache.maven.plugin.assembly.archive.task.AddDependencySetsTask.execute(AddDependencySetsTask.java:124)

        at
org.apache.maven.plugin.assembly.archive.phase.DependencySetAssemblyPhase.execute(DependencySetAssemblyPhase.java:76)

        at
org.apache.maven.plugin.assembly.archive.DefaultAssemblyArchiver.createArchive(DefaultAssemblyArchiver.java:182)

        at
org.apache.maven.plugin.assembly.mojos.AbstractAssemblyMojo.execute(AbstractAssemblyMojo.java:445)

        at
org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)

        ... 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