Site generation fails for small project
---------------------------------------
Key: MNG-4835
URL: http://jira.codehaus.org/browse/MNG-4835
Project: Maven 2 & 3
Issue Type: Bug
Affects Versions: 3.0-beta-3
Reporter: Johannes Schneider
Priority: Critical
Attachments: proj.zip
I get that exception for my project and really don't know what is going on.
I am sure this is a fault on my side, but I think there should be a better
error message:
[INFO] Generating "JavaNCSS Report" report --- javancss-maven-plugin:2.0
[INFO] Generating "Source Xref" report --- maven-jxr-plugin:2.1
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 9.623s
[INFO] Finished at: Thu Sep 23 17:05:11 CEST 2010
[INFO] Final Memory: 31M/233M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal
org.apache.maven.plugins:maven-site-plugin:3.0-beta-2:site (default-site) on
project my-artifact-id: Execution default-site of goal
org.apache.maven.plugins:maven-site-plugin:3.0-beta-2:site failed.
NullPointerException -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal
org.apache.maven.plugins:maven-site-plugin:3.0-beta-2:site (default-site) on
project my-artifact-id: Execution default-site of goal
org.apache.maven.plugins:maven-site-plugin:3.0-beta-2:site failed.
at
org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:211)
at
org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:148)
at
org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:140)
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:315)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:152)
at org.apache.maven.cli.MavenCli.execute(MavenCli.java:445)
at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:168)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:132)
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-site of goal org.apache.maven.plugins:maven-site-plugin:3.0-beta-2:site
failed.
at
org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:116)
at
org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:195)
... 19 more
Caused by: java.lang.NullPointerException
at org.codehaus.plexus.util.FileUtils.copyURLToFile(FileUtils.java:820)
at
org.apache.maven.plugin.jxr.AbstractJxrReport.copyRequiredResources(AbstractJxrReport.java:330)
at
org.apache.maven.plugin.jxr.AbstractJxrReport.createXref(AbstractJxrReport.java:265)
at
org.apache.maven.plugin.jxr.AbstractJxrReport.executeReport(AbstractJxrReport.java:409)
at
org.apache.maven.reporting.AbstractMavenReport.generate(AbstractMavenReport.java:101)
at
org.apache.maven.plugins.site.ReportDocumentRenderer.renderDocument(ReportDocumentRenderer.java:170)
at
org.apache.maven.doxia.siterenderer.DefaultSiteRenderer.renderModule(DefaultSiteRenderer.java:330)
at
org.apache.maven.doxia.siterenderer.DefaultSiteRenderer.render(DefaultSiteRenderer.java:134)
at
org.apache.maven.plugins.site.SiteMojo.renderLocale(SiteMojo.java:159)
at org.apache.maven.plugins.site.SiteMojo.execute(SiteMojo.java:122)
at
org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:107)
... 20 more
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