Book Image

Spring 5.0 Projects

By : Nilang Patel
Book Image

Spring 5.0 Projects

By: Nilang Patel

Overview of this book

Spring makes it easy to create RESTful applications, merge with social services, communicate with modern databases, secure your system, and make your code modular and easy to test. With the arrival of Spring Boot, developers can really focus on the code and deliver great value, with minimal contour. This book will show you how to build various projects in Spring 5.0, using its features and third party tools. We'll start by creating a web application using Spring MVC, Spring Data, the World Bank API for some statistics on different countries, and MySQL database. Moving ahead, you'll build a RESTful web services application using Spring WebFlux framework. You'll be then taken through creating a Spring Boot-based simple blog management system, which uses Elasticsearch as the data store. Then, you'll use Spring Security with the LDAP libraries for authenticating users and create a central authentication and authorization server using OAuth 2 protocol. Further, you'll understand how to create Spring Boot-based monolithic application using JHipster. Toward the end, we'll create an online book store with microservice architecture using Spring Cloud and Net?ix OSS components, and a task management system using Spring and Kotlin. By the end of the book, you'll be able to create coherent and ?exible real-time web applications using Spring Framework.
Table of Contents (13 chapters)
Title Page
About Packt
Contributors
Preface
Index

Spring supports for Kotlin


Due to its stunning features, Kotlin has rapidly grown in popularity, and many frameworks have started supporting it. The Spring Framework has allowed the development of Spring applications with Kotlin since version 5. Though Kotlin is fully interoperable with Java, you can write an application with pure and fully idiomatic Kotlin code. The diverse range of Kotlin features enhances productivity and combines well with Spring for application development.

As we have seen, the extension function in Kotlin is a non-intrusive way of providing a better alternative to the utility class or creating a class hierarchy for adding new features. Spring has used this feature to apply new Kotlin specific capabilities to existing Spring APIs. It is mainly used for dependency management. In the same way, Spring has also made framework APIs null safe to take full advantage of Kotlin.

Even Spring Boot has first-class Kotlin support, starting from version 2.x. This means you can write...