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I would like to be able to use an environment variable if it's set or a default fallback value that I set in pom.xml similar to ${VARIABLE:-default} in bash. Is it possible? Something like:
${env.BUILD_NUMBER:0} 
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To refer to environment variables from the pom. xml, we can use the ${env. VARIABLE_NAME} syntax. We should remember to pass the Java version information via environment variables.
Note that if you want to use Maven, you need to have Java installed and an environment variable set up. Open Google and search for maven download.
Maven properties are value placeholders, like properties in Ant. Their values are accessible anywhere within a POM by using the notation ${X}, where X is the property. Or they can be used by plugins as default values, for example: In your case you have defined properties as version of java.
I wasn't really satisfied with the accepted approach, so I simplified it a little.
Basically set a default property in the normal properties block, and only override when appropriate (instead of an effective switch statement):
<properties> <!-- Sane default --> <buildNumber>0</buildNumber> <!-- the other props you use --> </properties> <profiles> <profile> <id>ci</id> <activation> <property> <name>env.buildNumber</name> </property> </activation> <properties> <!-- Override only if necessary --> <buildNumber>${env.buildNumber}</buildNumber> </properties> </profile> </profiles> If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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