3Brown C E. The Essential Guide to Flex 2 with ActionSeript 3.0[M].北京:人民邮电出版社,2007.
4Zittrain J. Lost in the Cloud. The New York Times, 2009 -07 - 19. [ 2009 -05 - 15 ]. http://www, nytimes, com/2009/07/20/ opinion/20zittrain, html? pagewanted =2&_r =5.