[
https://jira.codehaus.org/browse/MSITE-644?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=301212#comment-301212
]
Samuel Langlois commented on MSITE-644:
---------------------------------------
I completely agree that it makes no sense!
It's just that if the error had been a little nicer, I would not have spent one
hour searching why the site generation failed :-)
Anyway, even if it is never fixed, people who google this error will hopefully
get to this page now...
> NullPointerException when site URL is not defined in distributionManagement
> ---------------------------------------------------------------------------
>
> Key: MSITE-644
> URL: https://jira.codehaus.org/browse/MSITE-644
> Project: Maven 2.x and 3.x Site Plugin
> Issue Type: Bug
> Affects Versions: 3.0, 3.1
> Reporter: Samuel Langlois
> Priority: Minor
> Attachments: pom.xml
>
>
> If you forget to specify the url in the site section:
> {code}
> <distributionManagement>
> <site>
> <id>alfresco.website</id>
> </site>
> </distributionManagement>
> {code}
> you get a nasty NullPointerException.
> {code}
> [INFO]
> ------------------------------------------------------------------------
> [ERROR] Failed to execute goal
> org.apache.maven.plugins:maven-site-plugin:3.0:site (default-site) on project
> alfresco: Execution default-site of goal
> org.apache.maven.plugins:maven-site-plugin:3.0:site failed.
> NullPointerException -> [Help 1]
> org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute
> goal org.apache.maven.plugins:maven-site-plugin:3.0:site (default-site) on
> project alfresco: Execution default-site of goal
> org.apache.maven.plugins:maven-site-plugin:3.0:site 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: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:site
> 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 java.io.File.<init>(File.java:222)
> at
> org.apache.maven.doxia.tools.DefaultSiteTool.urlEncode(DefaultSiteTool.java:1478)
> at
> org.apache.maven.doxia.tools.DefaultSiteTool.getDistMgmntSiteUrl(DefaultSiteTool.java:1451)
> at
> org.apache.maven.doxia.tools.DefaultSiteTool.appendMenuItem(DefaultSiteTool.java:1380)
> at
> org.apache.maven.doxia.tools.DefaultSiteTool.populateModulesMenuItemsFromModels(DefaultSiteTool.java:1344)
> at
> org.apache.maven.doxia.tools.DefaultSiteTool.populateModulesMenu(DefaultSiteTool.java:905)
> at
> org.apache.maven.doxia.tools.DefaultSiteTool.getDecorationModel(DefaultSiteTool.java:488)
> at
> org.apache.maven.plugins.site.AbstractSiteRenderingMojo.createSiteRenderingContext(AbstractSiteRenderingMojo.java:286)
> at
> org.apache.maven.plugins.site.SiteMojo.renderLocale(SiteMojo.java:154)
> at org.apache.maven.plugins.site.SiteMojo.execute(SiteMojo.java:138)
> at
> org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)
> {code}
> You can try executing {{mvn site -N}} with the attached pom file.
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