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Java EE 8 Design Patterns and Best Practices

You're reading from Java EE 8 Design Patterns and Best Practices Build enterprise-ready scalable applications with architectural design patterns

Product type Paperback

Published in Aug 2018

Publisher Packt

ISBN-13 9781788830621

Length 314 pages

Edition 1st Edition

Languages

Java

Tools

Java EE

Concepts

Design Patterns

Authors (3):

Alberto Simoes

Rocha

Purificação

View More author details

Table of Contents (20) Chapters

Title Page

Copyright and Credits

Dedication

Packt Upsell

Contributors

Preface

1. Introduction to Design Patterns FREE CHAPTER

2. Presentation Patterns

3. Business Patterns

4. Integration Patterns

5. Aspect-Oriented Programming and Design Patterns

6. Reactive Patterns

7. Microservice Patterns

8. Cloud-Native Application Patterns

9. Security Patterns

10. Deployment Patterns

11. Operational Patterns

12. MicroProfile

1. Other Books You May Enjoy

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Index

Implementing an asynchronous REST service

As an example of implementing an asynchronous REST service, we will use the same scenario used in the example of the event in the CDI and the asynchronous EJB method. Here, we will create an application that makes it possible to upload three types (or extensions) of files—ZIP, JPG, and PDF extensions. Depending on the extension received, we want the file received to be kept in its respective directory on the filesystem. To develop this example, we have the following classes:

FileUploadResource: This is a class that represents the resource that works with asynchronous processes to receive all requests to upload, and calls the respective EJB according to the file extension.
JpgHandler: This is an EJB with an available method for saving a JPG file on a disk.
PdfHandler: This is an EJB with an available method for saving a PDF file on a disk.
ZipHandler: This is an EJB with an available method for saving a ZIP file on a disk.
FileSystemUtils: This is a utility...

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Authors (3)

Alberto Simoes

Alberto Simoes

See other products by Alberto Simoes

Rocha

Rocha

Rhuan Rocha is from Brazil and has experience with development using the Java language and Java EE. Currently, he works as senior Middleware consultant in a partnership between Red Hat and FbricaDS, and he applies Red Hat solutions using Red Hat Middlewares. Furthermore, he has 8 years, experience with Java development and Java EE development, developing enterprise applications and government applications.

See other products by Rocha

Purificação

Purificação

João Purificação is an electronic engineer from Brazil with a master's in systems engineering. He started working with software development as a C and C ++ programmer. He has worked on the analysis, development, and architecture of Java-based enterprise applications. As a Java/JavaEE consultant, he has participated in the development and architecture of applications for private and government companies. He currently works as a senior architect at Resource IT, a company based in São Paulo.

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