Hi everybody,

when I execute "mvn -e dependency:unpack" this results in a build error:

+ Error stacktraces are turned on.
[INFO] Scanning for projects...
[INFO] snapshot de.ukv:maven:1.0-SNAPSHOT: checking for updates from 
ukv.snapshots
[INFO] Searching repository for plugin with prefix: 'dependency'.
[INFO] 
----------------------------------------------------------------------------
[INFO] Building SUKV 2 WAR-AOK
[INFO]    task-segment: [dependency:unpack]
[INFO] 
----------------------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[ERROR] BUILD ERROR
[INFO] ------------------------------------------------------------------------
[INFO] One or more required plugin parameters are invalid/missing for 
'dependency:unpack'

[0] inside the definition for plugin: 'maven-dependency-plugin'specify the 
following:

<configuration>
  ...
  <artifactItems>VALUE</artifactItems>
</configuration>.

[INFO] ------------------------------------------------------------------------
[INFO] Trace
org.apache.maven.lifecycle.LifecycleExecutionException: Error configuring: 
org.apache.maven.plugins:maven-dependency-plugin. Reason: Invalid or missing 
parameters: [Mojo parameter [name: 'artifactItems'; alias: 'null']] for mojo: 
org.apache.maven.plugins:maven-dependency-plugin:2.0-alpha-1:unpack
        at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:568)
        at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeStandaloneGoal(DefaultLifecycleExecutor.java:493)
        at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:463)
        at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:311)
        at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:278)
        at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:143)
        at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:330)
        at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:123)
        at org.apache.maven.cli.MavenCli.main(MavenCli.java:272)
        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)
Caused by: org.apache.maven.plugin.PluginParameterException: Error configuring: 
org.apache.maven.plugins:maven-dependency-plugin. Reason: Invalid or missing 
parameters: [Mojo parameter [name: 'artifactItems'; alias: 'null']] for mojo: 
org.apache.maven.plugins:maven-dependency-plugin:2.0-alpha-1:unpack
        at 
org.apache.maven.plugin.DefaultPluginManager.checkRequiredParameters(DefaultPluginManager.java:820)
        at 
org.apache.maven.plugin.DefaultPluginManager.getConfiguredMojo(DefaultPluginManager.java:582)
        at 
org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:398)
        at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:539)
        ... 16 more
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1 second
[INFO] Finished at: Thu Mar 01 14:56:25 CET 2007
[INFO] Final Memory: 3M/8M
[INFO] ------------------------------------------------------------------------


although I have the following configuration in my POM (similar to one of the 
examples listed on the plugin description):

<build>
  <plugins>
    <plugin>
      <groupId>org.apache.maven.plugins</groupId>
      <artifactId>maven-dependency-plugin</artifactId>
      <version>2.0-alpha-1</version>
      <executions>
        <execution>
          <id>unpack</id>
          <phase>package</phase>
          <goals>
            <goal>unpack</goal>
          </goals>
          <configuration>
            <artifactItems>
              <artifactItem>
                <groupId>myModule</groupId>
                <artifactId>myArtifactId</artifactId>
                <version>1.0-SNAPSHOT</version>
                <type>jar</type>
                <overWrite>false</overWrite>
                <outputDirectory>${project.build.directory}</outputDirectory>
              </artifactItem>
            </artifactItems>
          </configuration>
        </execution>
      </executions>
    </plugin>
  </plugins>
</build>


What am I missing here? Or what am I doing wrong?


Cheers

Thorsten

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