Windows下安装java环境

1. maven安装
   http://jingyan.baidu.com/article/1709ad808ad49f4634c4f00d.html
   2.在eclipse中创建maven项目
   http://jingyan.baidu.com/article/1e5468f97c8972484861b768.html
   3.[maven -- 解决“Could not calculate build plan”问题]
   http://www.cnblogs.com/isonre/p/6530500.html