学习网址1:http://www.cnblogs.com/huangjacky/category/221844.html
学习网址2:http://www.cnblogs.com/del/archive/2010/01/18/1650506.html
学习网址1:http://www.cnblogs.com/huangjacky/category/221844.html
学习网址2:http://www.cnblogs.com/del/archive/2010/01/18/1650506.html