Book Image

Building Web Apps with Spring 5 and Angular

By : Ajitesh Kumar Shukla
Book Image

Building Web Apps with Spring 5 and Angular

By: Ajitesh Kumar Shukla

Overview of this book

Spring is the most popular application development framework being adopted by millions of developers around the world to create high performing, easily testable, reusable code. Its lightweight nature and extensibility helps you write robust and highly-scalable server-side web applications. Coupled with the power and efficiency of Angular, creating web applications has never been easier. If you want build end-to-end modern web application using Spring and Angular, then this book is for you. The book directly heads to show you how to create the backend with Spring, showing you how to configure the Spring MVC and handle Web requests. It will take you through the key aspects such as building REST API endpoints, using Hibernate, working with Junit 5 etc. Once you have secured and tested the backend, we will go ahead and start working on the front end with Angular. You will learn about fundamentals of Angular and Typescript and create an SPA using components, routing etc. Finally, you will see how to integrate both the applications with REST protocol and deploy the application using tools such as Jenkins and Docker.
Table of Contents (18 chapters)
Title Page
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Handling the logout request


When the user clicks on logout, the Angular app invokes a logout API which, primarily, invalidates the HTTP session and removes the authentication object from the SecurityContextHolder object. Recall the SecurityContextHolder object is used to store the SecurityContext object, which holds on to the Authentication object. The following represents the code in the Spring app which invokes the logout API on the SecurityContextLogoutHandler instance:

@GetMapping(value="/logout")
public ExecutionStatus logout (HttpServletRequest request, HttpServletResponse response) {
  Authentication auth = SecurityContextHolder.getContext().getAuthentication();
  if (auth != null){
    new SecurityContextLogoutHandler().logout(request, response, auth);
  }
  return new ExecutionStatus("USER_LOGOUT_SUCCESSFUL", "User is logged out");
}