Hi,
I've found bug in Versions Maven Plugin.
Problematic part of pom:
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<version>2.6</version>
<configuration>
<archive>
<manifestFile>${project.build.sourceDirectory}/META-INF/MANIFEST.MF</manifestFile>
</archive>
</configuration>
</plugin>
NPE is caused by line:
<manifestFile>${project.build.sourceDirectory}/META-INF/MANIFEST.MF</manifestFile>
When I remove ${project.build.sourceDirectory} and leave only
<manifestFile>/META-INF/MANIFEST.MF</manifestFile> then NPE goes away.
Full POM available at
https://github.com/jboss-javassist/javassist/blob/1fd31f137c3995d29a5be698c9919b6f764ba882/pom.xml
Stacktrace:
[ERROR] Failed to execute goal
org.codehaus.mojo:versions-maven-plugin:2.1:display-plugin-updates
(default-cli) on project javassist: Execution default-cli of goal
org.codehaus.mojo:versions-maven-plugin:2.1:display-plugin-updates failed.
NullPointerException -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute
goal org.codehaus.mojo:versions-maven-plugin:2.1:display-plugin-updates
(default-cli) on project javassist: Execution default-cli of goal
org.codehaus.mojo:versions-maven-plugin:2.1:display-plugin-updates 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:320)
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:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
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)
at org.codehaus.classworlds.Launcher.main(Launcher.java:47)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:140)
Caused by: org.apache.maven.plugin.PluginExecutionException: Execution
default-cli of goal
org.codehaus.mojo:versions-maven-plugin:2.1:display-plugin-updates failed.
at
org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:110)
at
org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)
... 25 more
Caused by: java.lang.NullPointerException
at
org.apache.maven.project.interpolation.PathTranslatingPostProcessor.execute(PathTranslatingPostProcessor.java:58)
at
org.codehaus.plexus.interpolation.StringSearchInterpolator.interpolate(StringSearchInterpolator.java:223)
at
org.codehaus.plexus.interpolation.StringSearchInterpolator.interpolate(StringSearchInterpolator.java:124)
at
org.apache.maven.project.interpolation.AbstractStringBasedModelInterpolator.interpolateInternal(AbstractStringBasedModelInterpolator.java:316)
at
org.apache.maven.project.interpolation.StringSearchModelInterpolator$InterpolateObjectAction.traverseObjectWithParents(StringSearchModelInterpolator.java:187)
at
org.apache.maven.project.interpolation.StringSearchModelInterpolator$InterpolateObjectAction.run(StringSearchModelInterpolator.java:137)
at
org.apache.maven.project.interpolation.StringSearchModelInterpolator$InterpolateObjectAction.run(StringSearchModelInterpolator.java:104)
at java.security.AccessController.doPrivileged(Native Method)
at
org.apache.maven.project.interpolation.StringSearchModelInterpolator.interpolateObject(StringSearchModelInterpolator.java:83)
at
org.apache.maven.project.interpolation.StringSearchModelInterpolator.interpolate(StringSearchModelInterpolator.java:65)
at
org.codehaus.mojo.versions.DisplayPluginUpdatesMojo.getProjectPlugins(DisplayPluginUpdatesMojo.java:1557)
at
org.codehaus.mojo.versions.DisplayPluginUpdatesMojo.execute(DisplayPluginUpdatesMojo.java:469)
at
org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)
... 26 more
Thanks,
Michal Kordas
