Tomcat中DataSource的配置方法

study 1:

http://tech.ccidnet.com/art/3737/20050118/449743_1.html

study 2:

http://wuhongxian.blog.163.com/blog/static/5096505020079211131896/

study 3: better

http://pengjianbo1.iteye.com/blog/503326