Some have asked for Spring support in Griffon. There are still a couple of missing features in spring-core that prevent Griffon from using Spring as a "native" DI container however there's a bridge between Spring and Guice.
Note that the spring integration code is not that much. The controller is a simple one too (there's little validation at the moment, other than empty values). Also, the application is written in 100% Java and JavaFX, this is why the model and view code is more verbose than the Groovy alternative.