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

Customizing property names


As shown earlier, the default behavior of JSON serialization is to use the attribute names as they're found in the class, as the attribute names of the resultant JSON object. It's very common that you may need to change the resulting property name, according to the project's specification. Therefore, the @JsonbProperty annotation is available to be used on class fields, in order to provide custom names for the annotated attributes in the resulting JSON string.

Let's try customizing the property name of the movie's title in the following example:

public class Movie { 
 
    private long id; 
    @JsonbProperty("movie-title") 
    private String title; 
 
    // getters and setters here 
 
} 
 
JsonbConfig config = new JsonbConfig().withFormatting(true); 
Jsonb jsonb = JsonbBuilder.create(config); 
 
Movie movie = new Movie(); 
movie.setId(15); 
movie.setTitle("Beauty and The Beast"); 
 
String json = jsonb.toJson(movie); 
System.out.println(json); 

By running the previous...