If you look closely at the stack trace you'll see that the source
exception is NullPointerException and that it comes from Ant. So you
need to look for what cause the exception first if you want any help.
On 2/20/06, Kevin Wang <[EMAIL PROTECTED]> wrote:
> Hi, all,
>
> I have a problem when building beehive page flows in Maven2, I
> couldn't find the build-pageflows plugin on ibiblio site for Maven2, So
> I compile those JPF files using below snippet:
>
>
>
> <build>
>
> <plugins>
>
> ...
>
> <plugin>
>
> <artifactId>maven-antrun-plugin</artifactId>
>
> <executions>
>
> <execution>
>
> <phase>compile</phase>
>
> <configuration>
>
> <tasks>
>
> <echo>ant compile beehive pageflows
> ${beehive.dir}</echo>
>
> <import
> file="${beehive.dir}/apache-beehive-incubating-1.0m1/ant/beehive-tools.x
> ml"/>
>
> <build-pageflows
>
> srcdir="src/java"
>
> classpathref="maven.dependency.classpath"
>
> webcontentdir="${basedir}"
>
> tempdir="target/temp">
>
> </build-pageflows>
>
> </tasks>
>
> </configuration>
>
> <goals>
>
> <goal>run</goal>
>
> </goals>
>
> </execution>
>
> </executions>
>
> </plugin>
>
> <plugins>
>
> <build>
>
>
>
> But it gave such error message:
>
> [INFO] [antrun:run {execution: default}]
>
> [INFO] Executing tasks
>
> [echo] ant compile beehive pageflows
> D:/WLS_WORK/subv/src_load10/beehive
>
> [INFO]
> ------------------------------------------------------------------------
> ----
>
> [ERROR] BUILD ERROR
>
> [INFO]
> ------------------------------------------------------------------------
> ----
>
> [INFO] Error executing ant tasks
>
>
>
> Embedded error: java.lang.NullPointerException
>
> [INFO]
> ------------------------------------------------------------------------
> ----
>
> [INFO] Trace
>
> org.apache.maven.lifecycle.LifecycleExecutionException: Error executing
> ant tasks
>
> at
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(Default
> LifecycleExecutor.java:556)
>
> at
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifec
> ycle(DefaultLifecycleExecutor.java:472)
>
> at
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultL
> ifecycleExecutor.java:451)
>
> at
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandle
> Failures(DefaultLifecycleExecutor.java:303)
>
> at
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(
> DefaultLifecycleExecutor.java:270)
>
> at
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifec
> ycleExecutor.java:139)
>
> at
> org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:322)
>
> at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:115)
>
> at org.apache.maven.cli.MavenCli.main(MavenCli.java:249)
>
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.jav
> a:39)
>
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessor
> Impl.java:25)
>
> at java.lang.reflect.Method.invoke(Method.java:585)
>
> 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)
>
> Caused by: org.apache.maven.plugin.MojoExecutionException: Error
> executing ant tasks
>
> at
> org.apache.maven.plugin.antrun.AbstractAntMojo.executeTasks(AbstractAntM
> ojo.java:114)
>
> at
> org.apache.maven.plugin.antrun.AntRunMojo.execute(AntRunMojo.java:83)
>
> at
> org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginMa
> nager.java:415)
>
> at
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(Default
> LifecycleExecutor.java:531)
>
> ... 16 more
>
> Caused by: java.lang.NullPointerException
>
> at org.apache.tools.ant.Task.perform(Task.java:373)
>
> at org.apache.tools.ant.Target.execute(Target.java:341)
>
> at
> org.apache.maven.plugin.antrun.AbstractAntMojo.executeTasks(AbstractAntM
> ojo.java:108)
>
> ... 19 more
>
> Caused by: java.lang.NullPointerException
>
> at
> org.apache.tools.ant.taskdefs.ImportTask.execute(ImportTask.java:96)
>
> at
> org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:275)
>
> at org.apache.tools.ant.Task.perform(Task.java:364)
>
> ... 21 more
>
> [INFO]
> ------------------------------------------------------------------------
> ----
>
> [INFO] Total time: 43 seconds
>
> [INFO] Finished at: Tue Feb 21 10:08:29 CST 2006
>
> [INFO] Final Memory: 5M/10M
>
> [INFO]
> ------------------------------------------------------------------------
> ----
>
>
>
> Why? (the ant script can be run successfully using ant command)
>
>
>
> Please help,
>
>
>
> Regards/Kevin.
>
> _____
>
> _______________________________________________________________________
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>
--
Alexandre Poitras
Québec, Canada
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