Book Image

Learning Spring 5.0

By : Tejaswini Mandar Jog
Book Image

Learning Spring 5.0

By: Tejaswini Mandar Jog

Overview of this book

<p>Spring is the most widely used framework for Java programming and with its latest update to 5.0, the framework is undergoing massive changes. Built to work with both Java 8 and Java 9, Spring 5.0 promises to simplify the way developers write code, while still being able to create robust, enterprise applications.</p> <p>If you want to learn how to get around the Spring framework and use it to build your own amazing applications, then this book is for you.</p> <p>Beginning with an introduction to Spring and setting up the environment, the book will teach you in detail about the Bean life cycle and help you discover the power of wiring for dependency injection. Gradually, you will learn the core elements of Aspect-Oriented Programming and how to work with Spring MVC and then understand how to link to the database and persist data configuring ORM, using Hibernate.</p> <p>You will then learn how to secure and test your applications using the Spring-test and Spring-Security modules. At the end, you will enhance your development skills by getting to grips with the integration of RESTful APIs, building microservices, and doing reactive programming using Spring, as well as messaging with WebSocket and STOMP.</p>
Table of Contents (18 chapters)
Title Page
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface
9
Explore the Power of RESTful Web Services

SockJS


The SockJS library provides cross-browser JavaScript API to enable low latency, cross-domain communication between the browser and server. It aims to support the following goals:

  • Instead of using the WebSocket instance, the SockJS instance is used
  • It provides APIs that are close to the WebSocket API, both for server as well as client-side APIs
  • Faster communication support
  • JavaScript for client side
  • It comes with some chosen protocols that support cross-domain communication

The following code snippet shows us how to enable the SockJS library support for WebSocketConfigure:

@Override 
public void registerWebSocketHandlers(WebSocketHandlerRegistry  
  registry)  
{ 
    registry.addHandler(myHandler(), "/myHandler_sockjs").setAllowedOrigins("*").withSockJS(); 
} 

We can also configure in XML as follows:

<websocket:handlers> 
  <websocket:mapping path="/myHandler"  
    handler="myHandler_sockjs"/> 
  <websocket:sockjs/> 
</websocket:handlers> 

We can update the Capital...