http://my.oschina.net/chenguang/blog/376267
http://my.oschina.net/chenguang/blog/371275
http://my.oschina.net/winHerson/blog/211570
http://my.oschina.net/guyson/blog/117646
http://my.oschina.net/guol/blog/129933
原文：http://www.cnblogs.com/diyunpeng/p/5137121.html