Get Maven artifact version at runtime

by

You should not need to access Maven-specific files to get the version information of any given library/class.

You can simply use getClass().getPackage().getImplementationVersion() to get the version information that is stored in a .jar-files MANIFEST.MF. Luckily Maven is smart enough Unfortunately Maven does not write the correct information to the manifest as well by default!

Instead one has to modify the <archive> configuration element of the maven-jar-plugin to set addDefaultImplementationEntries and addDefaultSpecificationEntries to true, like this:

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-jar-plugin</artifactId>
    <configuration>
        <archive>                   
            <manifest>
                <addDefaultImplementationEntries>true</addDefaultImplementationEntries>
                <addDefaultSpecificationEntries>true</addDefaultSpecificationEntries>
            </manifest>
        </archive>
    </configuration>
</plugin>

Ideally this configuration should be put into the company pom or another base-pom.

Detailed documentation of the <archive> element can be found in the Maven Archive documentation.

More Related Contents:

  1. Maven: add a dependency to a jar by relative path
  2. Find Oracle JDBC driver in Maven repository
  3. Maven Modules + Building a Single Specific Module
  4. How to read an external properties file in Maven
  5. Different dependencies for different build profiles
  6. Maven: best way of linking custom external JAR to my project?
  7. Run a single test method with maven
  8. Is it possible to create an “uber” jar containing the project classes and the project dependencies as jars with a custom manifest file?
  9. Load properties file in JAR?
  10. Managing DLL dependencies with Maven
  11. Making Maven run all tests, even when some fail
  12. Building a runnable jar with Maven 2
  13. JUnit tests pass in Eclipse but fail in Maven Surefire
  14. Resource from src/main/resources not found after building with maven
  15. How can I create an executable/runnable JAR with dependencies using Maven?
  16. How do I create a new packaging type for Maven?
  17. “Faceted Project Problem (Java Version Mismatch)” error message
  18. maven-archetype-webapp eclipse problem
  19. How to control VM arguments for maven-jetty-plugin?
  20. Maven dependency resolution (conflicted)
  21. Can maven projects have multiple parents?
  22. How to reference javadocs to dependencies in Maven’s eclipse plugin when javadoc not attached to dependency
  23. Testing against Java EE 6 API
  24. What is the default annotation processors discovery process?
  25. List of dependency jar files in Maven
  26. Maven and the JOGL library?
  27. Handling unconventional source directory for a web project in maven
  28. Maven doesn’t recognize sibling modules when running mvn dependency:tree
  29. With Maven, how can I build a distributable that has my project’s jar and all of the dependent jars?
  30. Maven: remove a single transitive dependency

Leave a Comment