jenkinsfile - How do I access custom properties in my pom.xml?

Question

Let's say I have a custom property in my pom.xml set like this:

<properties>
 <app>com.myProject.app</app>
</properties>

How can I access it in my jenkinsfile?

This:

def pom = readMavenPom file: 'pom.xml'
def appName = pom.app

returns

org.jenkinsci.plugins.scriptsecurity.sandbox.RejectedAccessException: unclassified field org.apache.maven.model.Model app

Thanks in advance!

Answer 1

I know two approaches:

1. Use properties-maven-plugin to write the properties to a file. Use readProperties in the Jenkinsfile to read the properties.
   Works only if properties aren't needed until after Maven ran.
   Also, with the right circumstances, the properties file may be the stale one from a previous run, which is insiduous because the property values will be right anyway 99.9% of the time.
2. Use pom = readMavenPom 'path/to/pom.xml'. Afterwards, access the property like this: pom.properties['com.myProject.app'].

I like approach 2 much better: No extra plugin configuration in the POM, no file written, less sequencing constraints, less fragilities.