http://www.cnblogs.com/cyjch/archive/2012/03/28/2420806.html
把JDBC驱动程序复制到Tomcat的common/lib目录下
http://xm-king.iteye.com/blog/800519
http://lavasoft.blog.51cto.com/62575/265073/
http://www.cnblogs.com/nliao/p/3191201.html
原文：http://www.cnblogs.com/chuiyuan/p/4550413.html