Windows 下命令行建立 Maven 项目 入门。
cd D:\work\MyEclipse_Workspace
d:
D:\work\MyEclipse_Workspace\HelloWorld>mvn archetype:create -DgroupId=com.qunar.fresh.libin -DartifactId=HelloWorld
D:\work\MyEclipse_Workspace\HelloWorld>dir
D:\work\MyEclipse_Workspace\HelloWorld>cd HelloWorld
D:\work\MyEclipse_Workspace\HelloWorld>dir
D:\work\MyEclipse_Workspace\HelloWorld>mvn install
D:\work\MyEclipse_Workspace\HelloWorld>dir
D:\work\MyEclipse_Workspace\HelloWorld>mvn eclipse:eclipse
D:\work\MyEclipse_Workspace\HelloWorld>dir
这个的切换，就是点击那个小箭头，然后 Top Level...