m

http://www.cnblogs.com/danVC/archive/2010/05/23/1741959.html

http://java.chinaitlab.com/net/725348.html

http://blog.163.com/sandylin_wind/blog/static/93550055200810985158426/?suggestedreading

http://blog.csdn.net/firebird321/article/details/1767317