Load Maven POM version number into Java Project

Question

I want to add a version numbering to my Java application (in this case a Vaadin Portlet) which features the Version number in the help view.

The thing is that that version number is the one defined in the my Maven's POM file (for example 1.1.5-SNAPSHOT) and that is the one we are going to change (at release for example).

Any idea on how to get it out of the POM and into (for example, a String) in Java? (If this is at all possible)

Thanks

score 8 · Accepted Answer · answered Mar 10 '11 at 13:49

8

Use a filtered properties file containing the line

version=${project.version}

and load this properties file from the classpath in your Java program.

answered Mar 10 '11 at 13:49

JB Nizet

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Who sets properties file and can I get the value of a project.version from a Java method without using a properties file etc. Can you check my question? http://stackoverflow.com/questions/14760638/how-to-get-maven-project-version-from-java-class-as-like-at-pom – kamaci Feb 07 '13 at 22:48

score 4 · Answer 2 · answered Mar 10 '11 at 13:52

4

There are many solutions to this problem

Have maven write the version number in MANIFEST.MF during packaging phase
Create a filtered properties file, like JB mentionned
Have one Java class rewritten with that property

But I would defintely prefer the first, as accessing MANIFEST.MF is quite easy in Java

answered Mar 10 '11 at 13:52

Riduidel

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How would one access the information in the manifest in a Java application? – DeejUK Mar 21 '12 at 15:03
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@Deejay let me stackoverflow it for you : http://stackoverflow.com/q/615493/15619 – Riduidel Mar 21 '12 at 15:24

score 2 · Answer 3 · answered Mar 10 '11 at 13:54

The version in the POM is available as a property "project.version". Expressed as ${project.version}

So you should be able to use it with filtering resources:

http://maven.apache.org/plugins/maven-resources-plugin/examples/filter.html

The nicest approach would probably be to filter (and replace) a properties file or a deployment descriptor.

score 2 · Answer 4 · answered Mar 10 '11 at 13:56

2

Or you could read the maven pom.properties from classpath. The pom.properties are located at:
META-INF/maven/groupid/artifactId/pom.properties

answered Mar 10 '11 at 13:56

sdorra

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This would cause a dependency on the Maven build. I'd rather use the MANIFEST.MF file which contains the same information defined a standard manner. – jjmontes Oct 03 '11 at 15:49

Load Maven POM version number into Java Project

4 Answers4