默認的配置

一、五大核心

groupId:artifactId:packaging:classifier:version.

二、三核心

groupId:artifactId:version are all required fields. The three fields act much like an address and timestamp in one. This marks a specific place in a repository, acting like a coordinate system for Maven projects.

三、版本關係

One powerful aspect of Maven is in its handling of project relationships; that includes dependencies (and transitive dependencies), inheritance, and aggregation (multi-module projects)