Java framework for ATOM pub server

What Java framework/libs should I use in 2017 for implementing ATOM pub server.

Our technology stack on existing apps are Spring Framework (Spring Boot) and Java 7, so I preferr an framework that works nicely with Spring.

I have looked at ATOM Hopper and Rome, but both frameworks have not been actively mainteined since 2015.

Any suggestions?

After looking more detailed into Atom Hopper and Rome Tools because:

1. It has received several commits in 2017 so it seems that it is more maintained then Atom Hopper
2. Spring Framework is providing abstraction over Rome Tools. Although we are not going to use AbstractAtomFeedView, this indicate that Spring Framework considers this library stable and production ready
3. Rome Tools has only two 3rd party dependencies
4. Rome Tools can expose records as Atom or RSS feeds