如何安装：
Open Eclipse IDE
Click Help -> Install New Software...
Click Add button at top right corner
At pop up: fill up Name as "M2Eclipse" and Location as "http://download.eclipse.org/technology/m2e/releases"
Now click OK
After that installation would be started.
Go to Window --> Preferences
Observe, Maven is enlisted at left panel
Finally,
项目配置
Click on an existing project
Select Configure -> Convert to Maven Project
