なぜMavenは同じdependnecyのバージョンをたくさんダウンロードしますか？

Question

私はMaven 3でビルドを実行しており、同じjarのさまざまなバージョンをダウンロードしようとしていますが、そのjarを依存関係として指定していません。なぜそのことをやっているの？

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Answer 1

実際にはPOMだけをダウンロードするわけではありません。私の推測は、指定されたバージョンが固定バージョンではなく、使用可能なバージョンを調べるために使用可能なバージョンを調べていることになります。

このコンポーネントは、依存関係ツリーのどこかに含まれています。 mvn dependency:treeを使用して、どこを把握できますか。もちろん、ツリーを表示するためにもすべてのPOMをダウンロードする必要がありますが、すでにそれらを既に持っています:)