Session 共享

http://www.cnblogs.com/xinhaijulan/archive/2010/08/21/1805116.html

http://oiote.blog.sohu.com/94812998.html

http://blog.163.com/dawnsword@126/blog/static/16280591520103230461138/

http://blog.csdn.net/jimmy1980/article/details/4973093

http://www.java-zone.org/?p=157

http://www.cnblogs.com/peter9/archive/2011/11/09/2362147.html

http://www.docin.com/p-614701284.html