Book Image

Java EE 8 Application Development

Book Image

Java EE 8 Application Development

Overview of this book

Java EE is an Enterprise Java standard. Applications written to comply with the Java EE specification do not tie developers to a specific vendor; instead they can be deployed to any Java EE compliant application server. With this book, you’ll get all the tools and techniques you need to build robust and scalable applications in Java EE 8. This book covers all the major Java EE 8 APIs including JSF 2.3, Enterprise JavaBeans (EJB) 3.2, Contexts and Dependency Injection (CDI) 2.0, the Java API for WebSockets, JAX-RS 2.1, Servlet 4.0, and more. The book begins by introducing you to Java EE 8 application development and goes on to cover all the major Java EE 8 APIs. It goes beyond the basics to develop Java EE applications that can be deployed to any Java EE 8 compliant application server. It also introduces advanced topics such as JSON-P and JSON-B, the Java APIs for JSON processing, and the Java API for JSON binding. These topics dive deep, explaining how the two APIs (the Model API and the Streaming API) are used to process JSON data. Moving on, we cover additional Java EE APIs, such as the Java API for Websocket and the Java Message Service (JMS), which allows loosely coupled, asynchronous communication. Further on, you’ll discover ways to secure Java EE applications by taking advantage of the new Java EE Security API. Finally, you’ll learn more about the RESTful web service development using the latest JAX-RS 2.1 specification. You’ll also get to know techniques to develop cloud-ready microservices in Java EE.
Table of Contents (21 chapters)
Title Page
Credits
About the Author
About the Reviewers
www.PacktPub.com
Customer Feedback
Preface

Developing microservices using Java EE


Now that we have given a brief introduction to microservices, we are ready to see an example microservices application written using Java EE. Our example application should be very familiar to most Java EE developers. It is a simple CRUD (Create, Read, Update, Delete) application. Developed as a series of microservices, the application will follow the familiar MVC design pattern, with the "View" and "Controller" developed as microservices. The application will also utilize the very common DAO pattern, with our DAO developed as a microservice as well.

Note

Actually, the example code is not a full CRUD application. For simplicity, we decided to only implement the "Create" part of our CRUD application.

We will be using Payara Micro to deploy our example code. Payara Micro is a lightweight Java EE application server derived from GlassFish, it is open source and freely available, and supports the Java EE web profile, which includes a subset of all Java EE specifications...