Book Image

Learning Spring Boot 3.0 - Third Edition

By : Greg L. Turnquist
Book Image

Learning Spring Boot 3.0 - Third Edition

By: Greg L. Turnquist

Overview of this book

Spring Boot 3 brings more than just the powerful ability to build secure web apps on top of a rock-solid database. It delivers new options for testing, deployment, Docker support, and native images for GraalVM, along with ways to squeeze out more efficient usage of existing resources. This third edition of the bestseller starts off by helping you build a simple app, and then shows you how to secure, test, bundle, and deploy it to production. Next, you’ll familiarize yourself with the ability to go “native” and release using GraalVM. As you advance, you’ll explore reactive programming and get a taste of scalable web controllers and data operations. The book goes into detail about GraalVM native images and deployment, teaching you how to secure your application using both routes and method-based rules and enabling you to apply the lessons you’ve learned to any problem. If you want to gain a thorough understanding of building robust applications using the core functionality of Spring Boot, then this is the book for you. By the end of this Spring Boot book, you’ll be able to build an entire suite of web applications using Spring Boot and deploy them to any platform you need.
Table of Contents (17 chapters)
1
Part 1: The Basics of Spring Boot
3
Part 2: Creating an Application with Spring Boot
8
Part 3: Releasing an Application with Spring Boot
12
Part 4: Scaling an Application with Spring Boot

Creating hypermedia reactively

At the beginning of this chapter, we crafted a very simple API. It served some pretty basic JSON content. One thing that was missing from such a bare API was any controls.

Hypermedia is the term used to refer to both content and metadata being served by an API; this content and metadata indicate what can be done with the data or how to find other related data.

Hypermedia is something we see every day. At least on web pages. This includes the navigation links to other pages, links to CSS stylesheets, and links to effect change. This is quite common. When we order some product from Amazon, we aren’t required to provide the link to make it happen. The web page gives it to us.

Hypermedia in JSON is simply the same concept but applied to APIs instead of visual web pages.

And this is easy if we add Spring HATEOAS to our application!

Spring Boot Starter HATEOAS versus Spring HATEOAS

If you go to start.spring.io and ask for Spring HATEOAS...