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Packaging EAR file for JBoss 5.1 with Maven

The dependencies in a JBoss ear file go into the lib folder at the root of the archive;

      <plugin>
        <artifactId>maven-ear-plugin</artifactId>
        <version>2.5</version>
        <configuration>
          <defaultLibBundleDir>lib</defaultLibBundleDir>
          <modules>
            <ejbModule>
              <groupId>com.example.core</groupId>
              <artifactId>core-business</artifactId>
            </ejbModule>
            <webModule>
              <groupId>${project.parent.groupId}</groupId>
              <artifactId>example-web</artifactId>
              <uri>mydnb-web.war</uri>
            </webModule>
          </modules>
          <jboss>
            <version>5</version>
            <loader-repository>${project.parent.groupId}:archive=example-ear.ear</loader-repository>
          </jboss>
        </configuration>
      </plugin>

defaultLibBundleDir ensures that the dependencies get copied into the lib folder, whilst leaving the modules core-business and example-web.war at the root.