You can also configure JSP pages to act like servlets:

<web-app xmlns="http://java.sun.com/xml/ns/j2ee" version="2.4">

   <servlet>
      <servlet-name>event.service</servlet-name>
      <jsp-file>/event.jsp</jsp-file>
      <init-param>
         <param-name>eventRepository</param-name>
         <param-value>/data/events/</param-value>
      </init-param>
   </servlet>

</web-app>