Spring is the new EJB. It's bloated and always amazes me on how complex it can get when you need to implement something not provided by Spring itself.

With Java 9 modularity and lightweight libraries like Guice you can get much nimbler apps.

Dagger is a more efficient, simple, debuggable design for DI, and I fully expect to see similar compile time code gen DI in Rust soon. (Adding ownership, mutability tracing, possible stack allocation, etc does make things a bit harder to get right in this arena.)