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 Model-View-Controller web flow


The next step is to add Spring MVC capabilities. In the previous step, the required starter dependencies for the web are added to the pom.xml file. Next, we will define Spring MVC artifacts in our application.

Since this is a Spring Boot application, we are not required to declare everything from scratch. It is essential to define the controllers and view layer. First, we will declare a Spring MVC controller, as in the following snippet:

@Controller
public class BlogController {
  private Logger logger = LoggerFactory.getLogger(BlogController.class);
  @GetMapping("/")
  public String showLandingPage(Model model) {
    logger.info("This is show home page method ");
    return "home";
  }
}

The @Controller annotation describes this class as a Spring MVC controller. It basically instructs the Spring Boot application that this component will serve a web-based request. It matches the correct URL pattern to call a specific controller and its method.

In the previous...