How to make Angular 8 (Angular Universal) and Spring Boot 2 friends?

Question

Java

Hello my dear friend.
Am using Angular 8 and Spring Boot 2?
There was a need to use server-side rendering for SEO optimization.
So, how to use two tools? Maybe there is an example that personally helped you?
The examples I found were on Node. Maybe you should use a bunch of API (java) -> server-side rendering (node) -> nginx -> angular client?
I will be glad to any really useful links and examples.