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

Spring WebFlux

In this section, we will go into a bit more detail on Spring WebFlux. There are two (programming model) ways by which Spring WebFlux can be used. They are as follows:

  • Using annotations: By using annotations such as @Controller similar to how it is been done in Spring MVC
  • Using functional style: By using routing and handling with Java Lambdas

The following code shows the annotation-based style of using Spring WebFlux. We will be going through the entire code sample in subsequent sections in this chapter. This section, however, is aimed at giving an introduction before we delve deeper:

public class MovieAPI {
    public Flux(Movie) getMovies() {
        //Logic of getting all movies
    public Mono<Movie> getMovie(@PathVariable Long id) {
        //Logic for getting a specific movie
    public Mono<ResponseEntity<String>> createMovie...