如何使用不同的 Java 版本和 Maven 版本在 GitLab 上运行项目？

Question

Currently, in .gitlab.xml I have added maven version. mvn -version and I get following

Running with gitlab-ci-multi-runner 9.4.0 (ef0b1a6)
  on aldo-esb-app01 (ed33de66)
Using Shell executor...
Running on aldo-esb-app01...
Fetching changes...
HEAD is now at 6b74e38 remove .settings,project and change parent
From https://gitlab.chintegrator.cosng.net/chintegrator/filemover/filemover-generic
   6b74e38..aef376b  feature/java11change -> origin/feature/java11change
Checking out aef376b1 as feature/java11change...
Skipping Git submodules setup
$ mvn -version
Apache Maven 3.6.0 (97c98ec64a1fdfee7767ce5ffb20918da4f719f3; 2018-10-24T20:41:47+02:00)
Maven home: /shared/gitlab-runner/apache-maven/apache-maven-3.6.0
Java version: 1.8.0_121, vendor: Oracle Corporation, runtime: /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.121-0.b13.el7_3.x86_64/jre
Default locale: en_US, platform encoding: UTF-8
OS name: "linux", version: "3.10.0-514.6.1.el7.x86_64", arch: "amd64", family: "unix"
Job succeeded

Now, I'm migrating from Java 8 to 11.

So, I need to keep both Java 8 and Java 11 (for master project), as well as Maven 3.6 and 3.8 (for 11) (for feature branch only).

How can I configure both together so that Java 8 build runs with Java 8 and Java 11 projects build with Java 11 and Maven 3.8?

In Maven Parent, We have already started using Maven 3.8 with <release>11 , but it is not getting build.

Answer 1

Since you appear to be using the shell executor, you can use sdkman to both download/install/use specific versions of Java, Maven, or numerous other candidate target tools (ant, gradle, etc).

For docker-based executors (like on gitlab.com shared runners), you can control this with the image: tag by specifying an image containing the version of maven/java you need.

For example, to use maven 3.8.5 on Java 11:

job:
  image: maven:3.8.5-openjdk-11-slim
  script:
    - java -version
    - mvn -version