Plugin style architecture with PF4J and spring-mvc

I have to develop a modular web app, that will de deployed on a tomcat Server.

This application must be modular, like in jenkins there will a core and some plugins.

For my development I will use spring-mvc,hibernate, pf4j,...

I'm searching an example of a spring-mvc application, that use PF4J for plugin management, with exemple of one or two small plugin.

A plugin will use hibernate, provide a new fonctionnality and add new web page.

Could anyone give me that?