http://developer.51cto.com/art/201404/436685_2.htm
http://blog.csdn.net/v_july_v/article/details/19131887
http://tech.sina.com.cn/zl/post/detail/i/2014-03-20/pid_8445015.htm
http://developer.51cto.com/art/201404/436685_2.htm
http://blog.csdn.net/v_july_v/article/details/19131887
http://tech.sina.com.cn/zl/post/detail/i/2014-03-20/pid_8445015.htm