You might not like it, but I think that you need to start from scratch. Learn Java language, learn how javac compiler could be called, compile simple application from console. Then learn about Maven or Gradle, how to use them to build things. Then learn a bit about IDE. I suggest Idea, but Eclipse or NetBeans should work fine. Learn about Java Servlets, it's the underlying library for almost every Java web application. Deploy simple servlet to tomcat, learn how to handle GET/POST requests. Learn about JDBC, combine servlets and JDBC. Actually here you can stop and write production code for some simple REST service, for example. Only after you have some understanding about every underlying part, you should start with Spring framework, JPA, etc. And still it'll take a lot of time to learn those things.

I'd suggest not to search for various "stacks". They might be written poorly and incomplete. Learn each part and learn how to combine them.

I guess Rails is a complete solution, with Java there are many libraries which you should choose and glue together. Every non-trivial application probably will use somewhat unique combination of libraries.