Definitely Spring Boot with spring-data (if it supports your database/nosql system) since you're going to do a CRUD app, it will manage a lot for you. Add it spring-data-rest and you've got your models exposed on REST for free. If you want to secure some REST operations, spring-security got you covered.

Then on the client side you can add some hype using React or what's hot at the moment. Joke aside, on the server side Spring is solid, the whole thing is well engineered and it got you covered on every aspect of this kind of app, and then more.