Thomas Scheffler created MCHECKSTYLE-287:
--------------------------------------------
Summary: checkstyle report throws NPE
Key: MCHECKSTYLE-287
URL: https://jira.codehaus.org/browse/MCHECKSTYLE-287
Project: Maven Checkstyle Plugin
Issue Type: Bug
Affects Versions: 2.14, 2.13
Reporter: Thomas Scheffler
I don't know what triggers this bug. Somehow
org.apache.maven.plugin.checkstyle.AbstractCheckstyleReport.collectArtifacts(String)
produces a List which contains the null object. And therefor an exception is
thrown here (2.14):
{noformat}
[ERROR] Failed to execute goal
org.apache.maven.plugins:maven-site-plugin:3.3:site (default-site) on project
oaipmh: Execution default-site of goal
org.apache.maven.plugins:maven-site-plugin:3.3:site failed.
NullPointerException -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal
org.apache.maven.plugins:maven-site-plugin:3.3:site (default-site) on project
oaipmh: Execution default-site of goal
org.apache.maven.plugins:maven-site-plugin:3.3:site failed.
at
org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:224)
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:116)
at
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:80)
at
org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51)
at
org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:120)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:355)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:155)
at org.apache.maven.cli.MavenCli.execute(MavenCli.java:584)
at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:216)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:160)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at
org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)
at
org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)
at
org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)
at
org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)
Caused by: org.apache.maven.plugin.PluginExecutionException: Execution
default-site of goal org.apache.maven.plugins:maven-site-plugin:3.3:site failed.
at
org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:143)
at
org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:208)
... 19 more
Caused by: java.lang.NullPointerException
at
org.apache.maven.plugin.checkstyle.exec.DefaultCheckstyleExecutor.configureResourceLocator(DefaultCheckstyleExecutor.java:852)
at
org.apache.maven.plugin.checkstyle.exec.DefaultCheckstyleExecutor.executeCheckstyle(DefaultCheckstyleExecutor.java:102)
at
org.apache.maven.plugin.checkstyle.AbstractCheckstyleReport.executeReport(AbstractCheckstyleReport.java:474)
at
org.apache.maven.plugin.checkstyle.CheckstyleReport.executeReport(CheckstyleReport.java:156)
at
org.apache.maven.reporting.AbstractMavenReport.generate(AbstractMavenReport.java:255)
at
org.apache.maven.plugins.site.ReportDocumentRenderer.renderDocument(ReportDocumentRenderer.java:219)
at
org.apache.maven.doxia.siterenderer.DefaultSiteRenderer.renderModule(DefaultSiteRenderer.java:319)
at
org.apache.maven.doxia.siterenderer.DefaultSiteRenderer.render(DefaultSiteRenderer.java:135)
at
org.apache.maven.plugins.site.SiteMojo.renderLocale(SiteMojo.java:175)
at org.apache.maven.plugins.site.SiteMojo.execute(SiteMojo.java:138)
at
org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:132)
... 20 more
{noformat}
Looking at the code, you see a null check is done for the list, bit not for
elements of that list:
{noformat}
// MCHECKSTYLE-225: load licenses from additional artifacts, not from
classpath
if ( additionalArtifacts != null )
{
for ( Artifact licenseArtifact : additionalArtifacts )
{
try
{
resourceManager.addSearchPath( "jar", "jar:" +
licenseArtifact.getFile().toURI().toURL() );
}
catch ( MalformedURLException e )
{
// noop
}
}
}
{noformat}
--
This message was sent by Atlassian JIRA
(v6.1.6#6162)
