Get build number/date from artifact when building with maven - maven

Question

I use maven to build some projects which are installed into local .m2 and a remote artifactory repository.
I have another project that downloads (maven-dependency-plugin:copy) some of these artifacts to its local target folder and then uploads them to a fileshare. When I upload the artifact to fileshare I need to give it a buildNumber which should not change if I re-run the project. How do I get the buildnumber for a artifact in eg. artifactory?
When I browse the artifacts in artifactory they all have unique buildIds.

Answer 1

The best solutin might be to use buildnumber-maven-plugin to get the information from VCS etc. and put this information into the manifest.mf file. You can continue using the maven-dependency-plugin:copy goal to copy artifacts into the appropriate folder. Only in case you have SNAPSHOT's you might later take a look into the jar itself.
<build>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>buildnumber-maven-plugin</artifactId>
<version>1.1</version>
<executions>
<execution>
<phase>validate</phase>
<goals>
<goal>create</goal>
</goals>
</execution>
</executions>
<configuration>
<doCheck>true</doCheck>
<doUpdate>true</doUpdate>
</configuration>
</plugin>
</plugins>
</build>
You can define what should be put into the MANIFEST.MF file like the following:
<build>
...
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<version>2.1</version>
<configuration>
<archive>
<manifest>
<addDefaultImplementationEntries>true</addDefaultImplementationEntries>
</manifest>
<manifestEntries>
<Implementation-Build>${buildNumber}</Implementation-Build>
</manifestEntries>
</archive>
</configuration>
</plugin>
</plugins>
</build>