Book Image

Learning Spring Boot 2.0 - Second Edition

By : Greg L. Turnquist, Greg L. Turnquist
Book Image

Learning Spring Boot 2.0 - Second Edition

By: Greg L. Turnquist, Greg L. Turnquist

Overview of this book

Spring Boot provides a variety of features that address today's business needs along with today's scalable requirements. In this book, you will learn how to leverage powerful databases and Spring Boot's state-of-the-art WebFlux framework. This practical guide will help you get up and running with all the latest features of Spring Boot, especially the new Reactor-based toolkit. The book starts off by helping you build a simple app, then shows you how to bundle and deploy it to the cloud. From here, we take you through reactive programming, showing you how to interact with controllers and templates and handle data access. Once you're done, you can start writing unit tests, slice tests, embedded container tests, and even autoconfiguration tests. We go into detail about developer tools, AMQP messaging, WebSockets, security, and deployment. You will learn how to secure your application using both routes and method-based rules. By the end of the book, you'll have built a social media platform from which to apply the lessons you have learned to any problem. If you want a good understanding of building scalable applications using the core functionality of Spring Boot, this is the book for you.
Table of Contents (11 chapters)

Reactive Web with Spring Boot

The more and more I use #SpringBoot the more I like it.
Derek Stainer @dstainer

In the previous chapter, we saw how quickly an application can be created with just a few lines of code. In this chapter, we are going to embark upon a journey. We will build a social media application where users can upload pictures and write comments.

In this chapter, we will build the web layer for our social media application doing the following:

  • Creating a reactive web application with Spring Initializr
  • Learning the tenets of reactive programming
  • Introducing Reactor types
  • Switching from Apache Tomcat to Embedded Netty
  • Comparing reactive Spring WebFlux against classic Spring MVC
  • Showing some Mono/Flux-based endpoints
  • Creating a reactive ImageService
  • Creating a reactive file controller
  • Showing how to interact with a Thymeleaf template
  • Illustrating how going...