1、http://www.cnblogs.com/xing901022/p/3975626.html
2、http://www.cnblogs.com/xing901022/p/3978987.html
3、http://www.cnblogs.com/gaoyoubo/articles/1899815.html
4、http://www.cnblogs.com/fickleness/p/3151997.html
5、http://www.docin.com/p-494730059.html
6、http://www.docin.com/p-388880665.html