Book Image

Spring Essentials

Book Image

Spring Essentials

Overview of this book

Spring is an open source Java application development framework to build and deploy systems and applications that run on the JVM. It is the industry standard and the most popular framework among Java developers with over two-thirds of developers using it. Spring Essentials makes learning Spring so much quicker and easier with the help of illustrations and practical examples. Starting from the core concepts of features such as inversion of Control Container and BeanFactory, we move on to a detailed look at aspect-oriented programming. We cover the breadth and depth of Spring MVC, the WebSocket technology, Spring Data, and Spring Security with various authentication and authorization mechanisms. Packed with real-world examples, you’ll get an insight into utilizing the power of Spring Expression Language in your applications for higher maintainability. You’ll also develop full-duplex real-time communication channels using WebSocket and integrate Spring with web technologies such as JSF, Struts 2, and Tapestry. At the tail end, you will build a modern SPA using EmberJS at the front end and a Spring MVC-based API at the back end.By the end of the book, you will be able to develop your own dull-fledged applications with Spring.
Table of Contents (14 chapters)
Spring Essentials
Credits
About the Authors
About the Reviewer
www.PacktPub.com
Preface
Index

The Model-View-Controller pattern


MVC is a well-established architectural pattern popularly used for building interactive web and desktop applications. There are numerous frameworks implementing this pattern in most software platforms. MVC divides the application into three core elements that actually represent layers, separates concerns between these three core elements, and defines how they communicate with each other.

Model represents data, View displays the Model, and Controller handles user actions. Model can be any data, including that stored in a database. It usually represents a collection of domain objects with clearly defined relationships to each other. A Model can be displayed in multiple views depending on how the application is designed.

Controller acts as an intermediary between View and Model. It often has a set of handlers for each event generated by the view as the user interacts with it. Controller delegates user actions to appropriate handlers and then finally redirects...