Book Image

Building RESTful Web Services with Spring 5 - Second Edition

By : Raja CSP Raman, Ludovic Dewailly
Book Image

Building RESTful Web Services with Spring 5 - Second Edition

By: Raja CSP Raman, Ludovic Dewailly

Overview of this book

REST is an architectural style that tackles the challenges of building scalable web services. In today's connected world, APIs have taken a central role on the web. APIs provide the fabric through which systems interact, and REST has become synonymous with APIs.The depth, breadth, and ease of use of Spring makes it one of the most attractive frameworks in the Java ecosystem. Marrying the two technologies is therefore a very natural choice.This book takes you through the design of RESTful web services and leverages the Spring Framework to implement these services. Starting from the basics of the philosophy behind REST, you'll go through the steps of designing and implementing an enterprise-grade RESTful web service. Taking a practical approach, each chapter provides code samples that you can apply to your own circumstances.This second edition brings forth the power of the latest Spring 5.0 release, working with MVC built-in as well as the front end framework. It then goes beyond the use of Spring to explores approaches to tackle resilience, security, and scalability concerns. Improve performance of your applications with the new HTTP 2.0 standards. You'll learn techniques to deal with security in Spring and discover how to implement unit and integration test strategies.Finally, the book ends by walking you through building a Java client for your RESTful web service, along with some scaling techniques using the new Spring Reactive libraries.
Table of Contents (21 chapters)
Title Page
Copyright and Credits
Packt Upsell
Spring Security and JWT (JSON Web Token)

Ticket management using CRUD operations

Before moving on to the Ticket Management System, we will cover business requirements.

Let's say we have a banking web application that can be used by our customers, Peter and Kevin, and we have Sammy, our admin, and Chloe, the CSR, to help in case of any application issues.

Peter and Kevin are facing some problems in the payment process. When they try to click on the payment transaction submit button, it's not working. Also, the transaction view is in a web page. So our users (Peter and Kevin) will create a ticket to share their problem.

Once the ticket is created, it can be updated by customer/CSR/admin. Also, a customer can delete their own ticket. While updating, anyone can change the severity; however, only CSR and admin can change the status, as the ticket's status is related to official activities.

Customers can view their tickets in total or as a single ticket, but they can delete only one ticket at a time. The Multi-delete option is available...