NPE when run with Maven 2.1-SNAPSHOT
------------------------------------
Key: MCHECKSTYLE-72
URL: http://jira.codehaus.org/browse/MCHECKSTYLE-72
Project: Maven 2.x Checkstyle Plugin
Issue Type: Bug
Affects Versions: 2.2
Environment: Maven 2.1 built from trunk on 15 March 2007, 10:00AM
Checkstyle plugin built from trunk on 15 March 2007, 11:20
Reporter: Vincent Massol
I get:
{code}
[INFO] An error has occurred in Checkstyle report generation.
[INFO] ------------------------------------------------------------------------
[INFO] Trace
org.apache.maven.lifecycle.LifecycleExecutionException: An error has occurred
in Checkstyle report generation.
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:524)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.forkProjectLifecycle(DefaultLifecycleExecutor.java:862)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.forkLifecycle(DefaultLifecycleExecutor.java:699)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:470)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifecycle(DefaultLifecycleExecutor.java:440)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:419)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:271)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:238)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:146)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:303)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:123)
at
org.apache.maven.embedder.MavenEmbedder.execute(MavenEmbedder.java:907)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:369)
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:585)
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:408)
at
org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:351)
Caused by: org.apache.maven.plugin.MojoExecutionException: An error has
occurred in Checkstyle report generation.
at
org.apache.maven.reporting.AbstractMavenReport.execute(AbstractMavenReport.java:79)
at
org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:598)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:499)
... 20 more
Caused by: java.lang.NullPointerException
at java.io.Reader.<init>(Reader.java:61)
at java.io.InputStreamReader.<init>(InputStreamReader.java:55)
at org.codehaus.plexus.util.IOUtil.copy(IOUtil.java:248)
at org.codehaus.plexus.util.IOUtil.toString(IOUtil.java:307)
at org.codehaus.plexus.util.IOUtil.toString(IOUtil.java:295)
at
org.apache.maven.reporting.AbstractMavenReport.getSiteDescriptor(AbstractMavenReport.java:134)
at
org.apache.maven.reporting.AbstractMavenReport.execute(AbstractMavenReport.java:70)
... 22 more
{code}
The POM I used:
{code}
<build>
<plugins>
<plugin>
<!-- Apply the Checkstyle configurations defined in the top level
pom.xml file -->
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-checkstyle-plugin</artifactId>
<dependencies>
<dependency>
<groupId>com.xpn.xwiki</groupId>
<artifactId>xwiki-build-verifications</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
</dependencies>
<configuration>
<includes>
**/Api.java,
**/xmlrpc/Attachment.java,
**/xmlrpc/SpaceSummary.java,
**/ViewAction.java,
**/ZipExplorer*.java,
**/content/**/*.java,
**/XWikiMessageTool.java
</includes>
</configuration>
</plugin>
</plugins>
</build>
{code}
Thanks
-Vincent
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