参考文档：
（一）mvc 概要： https://blog.csdn.net/sjjsh2/article/details/53047422
（二）DispatcherServlet ：https://blog.csdn.net/sjjsh2/article/details/53054203
（三）ViewResolver : https://blog.csdn.net/sjjsh2/article/details/53064554
（四）handlerMapping和handlerAdapter : https://blog.csdn.net/sjjsh2/article/details/53056712
（五）ContextLoaderListener：https://blog.csdn.net/sjjsh2/article/details/53100311
（六）<mvc:annotation-driven/>：https://blog.csdn.net/sjjsh2/article/details/53100728
（七）aop：https://blog.csdn.net/sjjsh2/article/details/53171649
（八）事务管理：https://blog.csdn.net/sjjsh2/article/details/53175196
（九）拦截器：https://blog.csdn.net/sjjsh2/article/details/53067693
（十）异常处理：https://blog.csdn.net/sjjsh2/article/details/53070109
（十一）静态资源：https://blog.csdn.net/sjjsh2/article/details/53080857
（十二）配置文件：https://blog.csdn.net/sjjsh2/article/details/53087438
（十三）本地化与国际化：https://blog.csdn.net/sjjsh2/article/details/53103033
（十四）log4j：https://blog.csdn.net/sjjsh2/article/details/53187629
（十五）druid：https://blog.csdn.net/sjjsh2/article/details/53192421