如何使用配置文件 maven 指定 Spring 引导启动器依赖项的版本？

Question

I'm working in a Spring boot project which has different ways to connect with database, in dev I connect with it only with postgresql driver, and for qa and prod , I need connect through spring-cloud-gcp-starter-sql-postgresql 'cause we have a cloud environment.

So for manage all this possibilities I'm working with profiles in maven which controls my Spring profiles.

But I have a problem starter dependencies of spring cloud which are placed on my profile declaration 'cause they has no version and maven cannot recognize the default version.

This is a chunk of my pom with the version error:

So, how can I solve this problem?

Is there a way to know which is the default version for starter dependencies and save that information in a variable to be used in profile tag?

Any ideas will help a lots.

Thanks for reading and for you time. Greetings to all

Answer 1

You can safely extract dependencyManagement out of your profiles.

Reference: dependency-scope

import This scope is only supported on a dependency of type pom in the <dependencyManagement> section. It indicates the dependency is to be replaced with the effective list of dependencies in the specified POM's <dependencyManagement> section. Since they are replaced, dependencies with a scope of import do not actually participate in limiting the transitivity of a dependency.

So, you can safely extract dependencyManagement out of your profiles.

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Greenwich.SR2</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <profiles>
        <profile>
            <id>prod</id>
            <activation>
                <activeByDefault>false</activeByDefault>
            </activation>
            <dependencies>
                <dependency>
                    <groupId>org.springframework.cloud</groupId>
                    <artifactId>spring-cloud-gcp-starter</artifactId>
                </dependency>
                <dependency>
                    <groupId>org.springframework.cloud</groupId>
                    <artifactId>spring-cloud-gcp-starter-sql-postgresql</artifactId>
                </dependency>
            </dependencies>
        </profile>
        ...
   </profiles>

Or you could provide the resolved versions yourself; for Greenwich.SR2 that will be 1.1.2.RELEASE ...