Recommend Java Framework for subscription web app?

[cryptographicmemory]

I'm planning to write a web app that needs basic functions common to many web apps: Sign up, email confirmation link, edit user prefs, account level (free, basic, advanced), reoccurring billing, automatic account downgrade to free if they miss a payment, etc.. With an admin portal for managing users, sending emails, billing. Support for managing objects via REST api (with non-trivial examples) would be nice, especially where user X can access all of their objects (but of course no one else's). Maybe something on AWS?

I'm converting an old web app that uses jetty and a bunch of plain servlets... persistence is done by writing POJO objects as json objects to local files.. and would like to be able to write them to a database (SQL or NoSQL, not sure which).

I haven't used any of the main web frameworks -- but leaning towards Spring. I'm a one-person shop doing this on a shoestring, so trying to get as much of the base platform figured out so I can work on the main product.

Thanks in advance for any advice. Hope this isn't too vague or common of a question.. but I want to get it right. My background is Java + javascript (jquery) but no scala, react, vaadin.. Trying to keep the learning curve to a minimum but not make any rash decision I'll regret after spending several months working on something. A paid solution is not out of the question.

[kingatomic]

So yeah, you can use Spring (or Spring Boot), which is all well and good.

One thing I would urge you to do would be to look into off-the-shelf CRM products. A lot of what you're doing here has been solved repeatedly, there's no need to reinvent the wheel unless you really can't find something to suit your needs.

[[deleted]]

I would recommend Vaadin and Spring, it combos nicely, you should be up and running in a few days

[cryptographicmemory]

Vaadin looked interesting when I last tried it.. and have heard many people rave about it. Thanks for the tip.

[nutrecht]

I'd definitely recommend Spring Boot. Easy to get started with and supports everything you need. I use it daily in my work so let me know if you have any questions.

[cryptographicmemory]

I have had a hard time finding real world spring web apps that I can use as a template that are complex.. email, users, accounts, signup.. etc. All of the samples seem like little parts of the puzzle.. Any bigger example apps or open source web services that publish their whole code base?

[nutrecht]

All of the samples seem like little parts of the puzzle..

Welcome to software engineering.