I ran across the use case described in the title when working with a legacy web application which also serves as a dependency for other (plugin) projects. To this end, besides the War file which is deployed as web application, I would like to have the contained Jar file being installed separately in my local repository.

This additional artifact can be obtained with a few lines in the pom.xml:

<plugin>
  <groupId>org.apache.maven.plugins</groupId>
  <artifactId>maven-install-plugin</artifactId>
  <version>2.4</version>
  <executions>
      <execution>
          <phase>install</phase>
          <goals>
              <goal>install-file</goal>
          </goals>
          <configuration>
              <packaging>jar</packaging>
              <artifactId>${project.artifactId}</artifactId>
              <groupId>${project.groupId}</groupId>
              <version>${project.version}</version>
              <file>
                  ${project.build.directory}/${project.build.finalName}/WEB-INF/lib/${project.artifactId}-${project.version}.jar
              </file>
          </configuration>
      </execution>
  </executions>
</plugin>

This execution extracts the Jar file which is produced during the preparations of the War file and installs it with the project’s default group id, artifact id, and version.

Links

• [1] Maven Install Plugin: install-file