Book Image

Hands-On Spring Security 5 for Reactive Applications

By : Tomcy John
Book Image

Hands-On Spring Security 5 for Reactive Applications

By: Tomcy John

Overview of this book

Spring Security enables developers to seamlessly integrate authorization, authentication, and a range of security features for complex enterprise applications. This book provides a hands-on approach to developing reactive applications using Spring and will help you get up and running in no time. Complete with step-by-step explanations, practical examples, and self-assessment questions, the book begins by explaining the essential concepts of reactive programming, Spring Framework, and Spring Security. You’ll then learn about a variety of authentication mechanisms and how to integrate them easily with a Spring MVC application. You’ll also understand how to achieve authorization in a Spring WebFlux application using Spring Security. Furthermore, the book will take you through the configuration required to implement OAuth2 for securing REST APIs, and guide you in integrating security in microservices and serverless applications. Finally, you’ll be able to augment add-ons that will enhance any Spring Security module. By the end of the book, you’ll be equipped to integrate Spring Security into your Java enterprise applications proficiently.
Table of Contents (15 chapters)
Title Page
Copyright and Credits
Packt Upsell

How examples are structured

It's important that you understand how we will be using examples in this book. Since the book tries to give lots of detail on Spring Security 5 and its reactive aspects, we will not have a single use case throughout the book. Instead, we will keep creating small projects to help you understand each of the core concepts covered. Here are some of the important aspects of the code base within this book:

  • Most concepts will be covered using a standalone Spring Boot project.
  • At times, we will use the famous Spring Initializr ( to bootstrap our sample Spring Boot application. In other cases, we will start with a base project that we already have and introduce more concepts through code.
  • Generally, we will be using Java configuration. At times, we might use XML-based configurations.
  • We will keep our examples as simple as possible so that we don't lose focus on the core concept being introduced.
  • Even though this book is focused on reactive applications, we will not be covering this each time it is introduced. At times, we will just be doing plain, old imperative programming as it is more important to know reactive programming and use it when required. It's not that we have to use reactive code everywhere possible, just use it where you see fit.
  • We will be using VS Code for all the projects, and we'll be using the extensions available in VS Code to the fullest. We will also be using the Spring Initializr extension rather than using online Spring Initializr.
  • We will be using Maven most of the time in this book. There might be a case where we try Gradle.
  • Sometimes, we might use IntelliJ IDE and you'll see some screenshots showing this.
  • We'll be using the latest Spring Boot release version, namely 2.0.0. RELEASE. This is the latest release version of Spring Boot at the time of writing this book.