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Jakarta EE Application Development

By : David R. Heffelfinger

5 (2)

Jakarta EE Application Development

5 (2)

By: David R. Heffelfinger

Overview of this book

Jakarta EE stands as a robust standard with multiple implementations, presenting developers with a versatile toolkit for building enterprise applications. However, despite the advantages of enterprise application development, vendor lock-in remains a concern for many developers, limiting flexibility and interoperability across diverse environments. This Jakarta EE application development guide addresses the challenge of vendor lock-in by offering comprehensive coverage of the major Jakarta EE APIs and goes beyond the basics to help you develop applications deployable on any Jakarta EE compliant runtime. This book introduces you to JSON Processing and JSON Binding and shows you how the Model API and the Streaming API are used to process JSON data. You’ll then explore additional Jakarta EE APIs, such as WebSocket and Messaging, for loosely coupled, asynchronous communication and discover ways to secure applications with the Jakarta EE Security API. Finally, you'll learn about Jakarta RESTful web service development and techniques to develop cloud-ready microservices in Jakarta EE. By the end of this book, you'll have developed the skills to craft secure, scalable, and cloud-native microservices that solve modern enterprise challenges.

Preface

Preface

Who this book is for

What this book covers

To get the most out of this book

Download the example code files

Conventions used

Get in touch

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Free Chapter

Chapter 1: Introduction to Jakarta EE

Chapter 1: Introduction to Jakarta EE

Introduction to Jakarta EE

Jakarta EE, Java EE, J2EE, and the Spring Framework

Summary

Chapter 2: Contexts and Dependency Injection

Chapter 2: Contexts and Dependency Injection

Named beans

Dependency injection

Qualifiers

CDI bean scopes

CDI events

CDI Lite

Summary

Chapter 3: Jakarta RESTful Web Services

Chapter 3: Jakarta RESTful Web Services

Introduction to RESTful web services

Developing a simple RESTful web service

Developing a RESTful web service client

Seamlessly converting between Java and JSON

Query and path parameters

Server-sent events

Summary

Chapter 4: JSON Processing and JSON Binding

Chapter 4: JSON Processing and JSON Binding

Jakarta JSON Processing

Jakarta JSON Binding

Summary

Chapter 5: Microservices Development with Jakarta EE

Chapter 5: Microservices Development with Jakarta EE

An introduction to microservices

Microservices and Jakarta EE

Developing microservices using Jakarta EE

Summary

Chapter 6: Jakarta Faces

Chapter 6: Jakarta Faces

Introduction to Jakarta Faces

Developing our first Faces application

Custom data validation

Customizing default messages

Summary

Chapter 7: Additional Jakarta Faces Features

Chapter 7: Additional Jakarta Faces Features

Ajax-enabled Faces applications

Jakarta Faces HTML5 support

Faces Flows

Faces WebSocket support

Additional Faces component libraries

Summary

Chapter 8: Object Relational Mapping with Jakarta Persistence

Chapter 8: Object Relational Mapping with Jakarta Persistence

The CUSTOMERDB database

Configuring Jakarta Persistence

Persisting data with Jakarta Persistence

Entity relationships

Composite primary keys

Jakarta Persistence Query Language

Criteria API

Bean Validation support

Final notes

Summary

Chapter 9: WebSockets

Chapter 9: WebSockets

Developing WebSocket server endpoints

Developing WebSocket clientsin JavaScript

Summary

Chapter 10: Securing Jakarta EE Applications

Chapter 10: Securing Jakarta EE Applications

Identity stores

Authentication mechanisms

Summary

Chapter 11: Servlet Development and Deployment

Chapter 11: Servlet Development and Deployment

What is a servlet?

Request forwarding and response redirection

Persisting application data across requests

Passing initialization parameters to a servlet via annotations

Servlet filters

Servlet listeners

Pluggability

Configuring web applications programmatically

Asynchronous processing

HTTP/2 server push support

Summary

Chapter 12: Jakarta Enterprise Beans

Chapter 12: Jakarta Enterprise Beans

Session beans

Message-driven beans

Transactions in enterprise beans

Enterprise bean life cycles

Enterprise bean timer service

Enterprise bean security

Summary

Chapter 13: Jakarta Messaging

Chapter 13: Jakarta Messaging

Working with message queues

Working with message topics

Summary

Chapter 14: Web Services with Jakarta XML Web Services

Chapter 14: Web Services with Jakarta XML Web Services

Developing web services with Jakarta XML Web Services

Exposing Enterprise Beans as web services

Summary

Chapter 15: Putting it All Together

Chapter 15: Putting it All Together

The sample application

Summary

Index

Index

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Conventions used

There are a number of text conventions used throughout this book.

Code in text: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: “As can be seen in the example, we generate an instance of JsonObject by invoking the add() method on an instance of JsonObjectBuilder.”

A block of code is set as follows:

<!DOCTYPE html>
<html>
  <head>
    <meta http-equiv="Content-Type" content="text/html;
      charset=UTF-8">
    <title>Login Error</title>
  </head>
  <body>
    There was an error logging in.
    <br />
    <a href="login.html">Try again</a>
  </body>
</html>

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

package com.ensode.jakartaeebook.security.basicauthexample;
//imports omitted for brevity
@BasicAuthenticationMechanismDefinition
@WebServlet(name = "SecuredServlet", urlPatterns = {"/securedServlet"})
@ServletSecurity(
        @HttpConstraint(rolesAllowed = "admin"))
public class SecuredServlet extends HttpServlet {
  @Override
  protected void doGet(HttpServletRequest request,
    HttpServletResponse response) throws ServletException, IOException {
    response.getOutputStream().print(
      "Congratulations, login successful.");
  }
}

Any command-line input or output is written as follows:

appclient -client simplesessionbeanclient.jar

Bold: Indicates a new term, an important word, or words that you see onscreen. For instance, words in menus or dialog boxes appear in bold. Here is an example: “Now that we have created a customer, our Customer List page displays a data table listing the customer we just created.”

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