默认的配置

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1、五大核心

groupId:artifactId:packaging:classifier:version.

2、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.

3、版本关系

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

默认的配置

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原文地址：http://www.cnblogs.com/shunliu-java/p/4691376.html