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Building Applications with Spring 5 and Kotlin

You're reading from Building Applications with Spring 5 and Kotlin Build scalable and reactive applications with Spring combined with the productivity of Kotlin

Product type Paperback

Published in May 2018

Publisher Packt

ISBN-13 9781788394802

Length 310 pages

Edition 1st Edition

Languages

Kotlin

Tools

Spring

Concepts

Server Side Web Development

Author (1):

Vasić

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Table of Contents (16) Chapters

Title Page

Packt Upsell

Contributors

Preface

1. Starting Up FREE CHAPTER

2. Starting with Spring

3. Building Your First Spring RESTful Service with Kotlin

4. Working with Spring Data JPA and MySQL

5. Securing Applications with Spring Security

6. Spring Cloud

7. Using Project Reactor

8. Development Practices

9. Testing

10. Project Deployment

1. Other Books You May Enjoy

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Index

Adding an @Service component

We will continue our work by introducing a Service component. So, what is a Spring service exactly? An @Service annotated class is Service, originally defined by domain-driven design. That is an operation offered as an interface that stands alone in the model, with no encapsulated state.

Spring offers the following commonly used annotations:

@Component
@Controller
@Repository
@Service

Let's explain the difference between them.

@Component is a generalization stereotype for any component managed by Spring Framework.

The following specializations are available: @Repository, @Service, and @Controller. Each is specialized for a different use:

@Repository annotation is a marker for any class that fulfills the role of a Data Access Object (DAO) of a repository. It also offers the automatic translation of exceptions. We will explain its usage soon.
@Controller annotation has already been covered in the previous examples.
@Service annotated class will have the purpose of connecting...

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Authors (1)

Vasić

Vasić

Milo Vasi is a software engineer, author and open source enthusiasts. Milo holds a Bachelor degree in Programming of computer graphics and Master degree in the field of Android programming, both degrees he obtained at the Singidunum University. He published his first book Fundamental Kotlin in October 2016 and thus achieved his dream of becoming an author.

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