http://blog.csdn.net/laczff21/article/details/7542236
http://blog.csdn.net/yhm2046/article/details/8218636
http://www.cnblogs.com/macroxu-1982/p/3648510.html
http://bbs.csdn.net/topics/350157450
http://download.csdn.net/detail/why_2012_gogo/8034953
原文：http://www.cnblogs.com/royi123/p/5164489.html