How Can I Version Multiple Maven Projects?

Question

I have a set of Spring Boot-based microservice projects. Each is a multi-module project, with a root POM, and module directories with their own POMs. Each root POM has, as it's parent, the spring-boot-starter-parent artifact.

Each of these multi-module projects currently build successfully, and result in 3 artifacts each. However, each project has it's own version.

I want to accomplish 2 things:

Stamp this set of microservice projects with a common version across all of them.
Enforce a common set of dependency versions across all of them, similar to how <dependencyManagement> works within a project. (e.g. force each service to use version x.y.z of the example-common-dependency dependency)

Is this possible in Maven?

If not, what about Gradle?

Thank you for your help!

If you want the same version for all your microservices, couldn't you just build them in one multi-module project? — J Fabian Meier
Yes, I thought about doing that. However, these services were developed independently, and have independent build/deploy processes already in place. Re-arranging them all into a single multi-module project seemed like more effort than I wanted to take on. — Jack Straw

Ryan Stuetzer Ryan Stuetzer · Accepted Answer · 2019-09-27T18:07:12

Yes, there are several ways you can accomplish both #1 and #2 using maven. Check out the maven docs on POMs: https://maven.apache.org/guides/introduction/introduction-to-the-pom.html. There are pros and cons to each type of setup. The "Project Inheritance" could do much, if not all, of #1 and #2 for you. That might be a simple way to start. You may also want to look at using spring boot without the spring boot parent: https://docs.spring.io/spring-boot/docs/current/reference/htmlsingle/#using-boot-maven-without-a-parent. This could give you more flexibility b/c a maven project cannot have multiple parents. Hope this helps.

How Can I Version Multiple Maven Projects?

1 Answers