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 [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 This message is for the designated recipient only and may contain privileged, proprietary, or otherwise private information. If you have received it in error, please notify the sender immediately and delete the original. Any other use of the email by you is prohibited.
