On 1/17/07, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
Hi,
I'm want to write my own plugin to build my company's project.
Now I'm following the "Your First Plugin" Totorial on
http://maven.apache.org/guides/plugin/guide-java-plugin-development.html
.
I've installed the hello-maven-plugin in my local repository.
Now I want to run this plugin via the command line, mvn
sample.plugin:maven-hello-plugin:1.0-SNAPSHOT:sayhi.
I get the following error:
C:\eGovDev\Maven Plugins>mvn
sample.plugin:maven-hello-plugin:1.0-SNAPSHOT
where did the :sayhi go ?
[INFO] Scanning for projects...
[INFO]
------------------------------------------------------------------------
[ERROR] FATAL ERROR
[INFO]
------------------------------------------------------------------------
[INFO] null
[INFO]
------------------------------------------------------------------------
[INFO] Trace
java.lang.NullPointerException
at
org.apache.maven.plugin.descriptor.PluginDescriptor.getMojo(PluginDes
criptor.java:259)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.getMojoDescriptor
(DefaultLifecycleExecutor.java:1524)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.segmentTaskListBy
AggregationNeeds(DefaultLifecycleExecutor.java:381)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLi
fecycleExecutor.java:135)
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:256)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.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: Wed Jan 17 10:35:35 CET 2007
[INFO] Final Memory: 1M/4M
[INFO]
------------------------------------------------------------------------
They say something about the goal annotation, that it is needed, but is
it needed in the source code of the mojo ?
Here's the source code:
package sample.plugin;
import org.apache.maven.plugin.AbstractMojo;
import org.apache.maven.plugin.MojoExecutionException;
import org.apache.maven.plugin.MojoFailureException;
/**
* Says "Hi" to the user.
* @goal sayhi
*/
public class GreetingMojo extends AbstractMojo
{
public void execute() throws MojoExecutionException,
MojoFailureException
{
getLog().info("Hello, world.");
}
}
The @goal annotation is in comment, but when i write the annotation, i
get an error.
It isn't recognised as an annotation.
I guess the FATAL ERROR appears because there's no sayhi annotation.
But how can I add it to this class file ?
Kind regards.
Jelle
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