mvn ant:ant fails with NPE when maven-javadoc-plugin custom tag is specified in
pom.xml
---------------------------------------------------------------------------------------
Key: MANT-41
URL: http://jira.codehaus.org/browse/MANT-41
Project: Maven 2.x Ant Plugin
Issue Type: Bug
Affects Versions: 2.1
Environment: Fedora 8 , Java SE 1.6.0_05-b13, Maven 2.0.9
Reporter: Earl Marwil
Priority: Minor
I recently added a custom javadoc tag to cross reference requirements and
implementation. This is accommodated by the maven-javadoc-plugin as in the
following snippet from my pom.xml:
{code:xml}
<reporting>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-javadoc-plugin</artifactId>
<configuration>
<tags>
<tag>
<name>requirement</name>
<placement>a</placement>
<head>Software Requirement:</head>
</tag>
</tags>
</configuration>
</plugin>
</plugins>
</reporting>
{code}
When I run the maven-ant-plugin, it fails with a NullPointerException:
{code}
[INFO] [ant:ant]
[INFO] ------------------------------------------------------------------------
[ERROR] FATAL ERROR
[INFO] ------------------------------------------------------------------------
[INFO] null
[INFO] ------------------------------------------------------------------------
[INFO] Trace
java.lang.NullPointerException
at
org.codehaus.plexus.util.xml.PrettyPrintXMLWriter.escapeXml(PrettyPrintXMLWriter.java:151)
at
org.codehaus.plexus.util.xml.PrettyPrintXMLWriter.escapeXmlAttribute(PrettyPrintXMLWriter.java:166)
at
org.codehaus.plexus.util.xml.PrettyPrintXMLWriter.addAttribute(PrettyPrintXMLWriter.java:190)
at
org.apache.maven.plugin.ant.AntBuildWriterUtil.writeJavadocTask(AntBuildWriterUtil.java:539)
at
org.apache.maven.plugin.ant.AntBuildWriter.writeJavadocTarget(AntBuildWriter.java:991)
at
org.apache.maven.plugin.ant.AntBuildWriter.writeGeneratedBuildXml(AntBuildWriter.java:304)
at
org.apache.maven.plugin.ant.AntBuildWriter.writeBuildXmls(AntBuildWriter.java:113)
at org.apache.maven.plugin.ant.AntMojo.execute(AntMojo.java:112)
at
org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:451)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:558)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeStandaloneGoal(DefaultLifecycleExecutor.java:512)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:482)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:330)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:291)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:142)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:336)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:129)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:287)
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.classworlds.Launcher.launchEnhanced(Launcher.java:315)
at org.codehaus.classworlds.Launcher.launch(Launcher.java:255)
at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430)
at org.codehaus.classworlds.Launcher.main(Launcher.java:375)
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1 second
[INFO] Finished at: Thu Jun 05 13:11:49 MDT 2008
[INFO] Final Memory: 5M/81M
[INFO] ------------------------------------------------------------------------
{code}
The maven-ant-plugin works fine when the custom tag configuration is removed
from the pom.xml file.
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