Why Doesn't My Maven Plugin Work After Moving its Configuration to ``?

Plugin Management in Maven's pom.xml

Maven's pluginManagement section provides a central location to manage plugin configurations that can be shared across multiple project modules. By leveraging pluginManagement, you can avoid repeating plugin and configuration details for each module, ensuring consistency and simplifying project maintenance.

Issue Explanation

The provided example demonstrates an attempt to enclose a plugin configuration within pluginManagement. However, when this modification is made, the plugin stops working when running the install goal.

Reason for the Behavior Change

Unfortunately, simply adding the plugin configuration to pluginManagement is not sufficient to enable its use in the project. The reason lies in the purpose of pluginManagement: it only serves as a repository of plugin configurations that are applicable to child projects that inherit from the current project. To enable the plugin in the current project, it is still necessary to explicitly declare it within the plugins section.

Solution

To resolve the issue and use the plugin within the current project, add the following plugins section within the pom.xml:

<plugins>
    <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-dependency-plugin</artifactId>
    </plugin>
</plugins>

This addition will ensure that the plugin is loaded in the current project and will utilize the configuration specified in pluginManagement.

Conclusion

When working with pluginManagement in Maven, it is essential to understand that it only serves as a central repository for plugin configurations. To actively use a plugin in the current project, it must be explicitly declared in the plugins section, even if its configuration is stored in pluginManagement. By following this approach, you can effectively manage plugin configurations while maintaining control over which plugins are used in each project module.

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