This plugin provide some help with Maven: see the goals list.
Notice: This plugin is deprecated in favor of plexus-component-metadata.
A mojo will generate a component descriptor file.
The component descriptor will contains all component defined with javadoc tags in your sources.
Add this plugin (Automatically executes within the lifecycle phase: process-sources) as this :
<plugin>
<groupId>org.codehaus.plexus</groupId>
<artifactId>plexus-maven-plugin</artifactId>
<executions>
<execution>
<goals>
<goal>descriptor</goal>
</goals>
</execution>
</executions>
</plugin>