Webhook Demo

This is a simple demonstration of a Spring Boot webhook based off this YouTube tutorial. I cleaned up some bad practices from the tutorial.

Thoughts

I used H2 Database instead of a MySQL driver.
In the tutorial, @Controller was used. I replaced it with @RestController as a view was not provided or necessary.
@RequestBody is not required for each method when you use @RestController.
In fact, most conventions in the tutorial follow a typical SpringMVC implementation.
Spring Initializr has stopped including a maven jar. I always excluded it from my repositories on GitHub.
In VSCode, you can have problems when you add another application to an exisiting Java workspace. It is best to restart after adding another application to your folder. There needs to be only folder in the Java workplace. It doesn't matter if that one folder contains multiple applications.
The students array was initialized inside the controller method. This is problematic, as the array of students will be overwritten everytime the method is accessed. It is better to initialize the ArrayList inside the model entity.
Multiple ways to use optional in the controller. By utilizing orElseThrow and a SchoolDataNotFoundException, I was able to avoid using optional directly.
I replaced RestTemplate with newer RestClient. The change actually increases LOC. Both are still synchronous and blocking.

Baeldung - spring boot h2 database
Geeks for Geeks - difference between controller and rest controller annotation in spring
Stack Overflow - how to put prefix when create a custom id generator in java spring boot
Stack Overflow - how to avoid visual studio code warning myfile java is a non project file
dzone - replace your rest template
Baeldung - spring webclient resttemplate
Spring Docs - rest clients
Blog - think twice before using onetomany
YouTube - Java Optionals, a Practical Walkthrough - Java Programming
Blog - null checking done right with optionals