Book Image

Developing Middleware in Java EE 8

Book Image

Developing Middleware in Java EE 8

Overview of this book

Middleware is the infrastructure in software based applications that enables businesses to solve problems, operate more efficiently, and make money. As the use of middleware extends beyond a single application, the importance of having it written by experts increases substantially. This book will help you become an expert in developing middleware for a variety of applications. The book starts off by exploring the latest Java EE 8 APIs with newer features and managing dependencies with CDI 2.0. You will learn to implement object-to-relational mapping using JPA 2.1 and validate data using bean validation. You will also work with different types of EJB to develop business logic, and with design RESTful APIs by utilizing different HTTP methods and activating JAX-RS features in enterprise applications. You will learn to secure your middleware with Java Security 1.0 and implement various authentication techniques, such as OAuth authentication. In the concluding chapters, you will use various test technologies, such as JUnit and Mockito, to test applications, and Docker to deploy your enterprise applications. By the end of the book, you will be proficient in developing robust, effective, and distributed middleware for your business.
Table of Contents (18 chapters)
Title Page
Copyright and Credits
Dedication
Packt Upsell
Contributors
Preface
Index

Using binary


As JSON is a text-based format, associating binary data (such as file content) inside a JSON document directly is not technically feasible. Therefore, a text representation for the binary data should be used in order to be shown in the resulting JSON as an alternative to the direct bytes array.

JSON-B supports three different strategies to represent the bytes array in JSON documents:

  • Binary: Using this strategy, binary data is encoded as a byte array.
  • Base 64: Using this strategy, binary data is encoded using the Base64 encoding scheme as specified in RFC 4648 and RFC 2045.
  • Base 64 URL: Using this strategy, binary data is encoded using the URL and Filename safe Base64 Alphabet as specified in Table 2 of RFC 4648. This is compliant with the Internet JSON (I-JSON) profile.

For example, let's define a movie object, with a binary array representing its thumbnail, and load the binary data from a file, as shown in the following example:

public class Movie { 
    private long id; 
    private...