Has anyone implemented Pentaho with a Spring MVC project? Can it be done?

I have an established MVC project with Spring Data and Spring Boot (and a few other things). I'd like to add in the ability to do the ad-hoc reporting--where a user can create a simple report or chart from scratch--and am looking at possibly using Pentaho. But I haven't seen much that indicates it can be integrated into MVC.

Anyone else have this problem?