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Developing Middleware in Java EE 8

You're reading from   Developing Middleware in Java EE 8 Build robust middleware solutions using the latest technologies and trends

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Product type Paperback
Published in Jun 2018
Publisher Packt
ISBN-13 9781788391078
Length 252 pages
Edition 1st Edition
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Author (1):
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Abdalla Mahmoud Abdalla Mahmoud
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Abdalla Mahmoud
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Table of Contents (12) Chapters Close

Preface 1. Delving into Java EE 8 FREE CHAPTER 2. Dependency Injection Using CDI 2.0 3. Accessing the Database with JPA 2.1 4. Validating Data with Bean Validation 2.0 5. Exposing Web Services with JAX-RS 2.1 6. Manipulating JSON with JSON-B 1.0 7. Communicating with Different Systems with JMS 2.0 8. Sending Mails with JavaMail 1.6 9. Securing an Application with Java Security 1.0 10. Making Interactive Applications with WebSockets 1.1 11. Other Books You May Enjoy

Validating Data with Bean Validation 2.0

Validating data is one of the most common and important operations in an enterprise solution. Whatever your application domain is, you should always validate your data against the proposed business constraints, and in the different layers of your application. You should always validate data entered directly by the user (in the presentation layer), data received by your web services, data received by your business objects, and data before being sent to the database (in the data access layer).

But why you should validate your data in all application layers rather than the presentation layer, which has direct contact with your end user? 

The answer is this: you may expose a web service layer to allow integration with third parties, or even have a set of web services to support your frontend without an intent to expose them to third parties...

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