mvn优点

1.jar包管理

中央仓库，本地仓库

通过坐标获取jar包，groupid，artifactid，version

setting.xml文件中有本地仓库地址的设置

  <!-- localRepository
   | The path to the local repository maven will use to store artifacts.
   |
   | Default: ${user.home}/.m2/repository
  <localRepository>/path/to/local/repo</localRepository>
  -->