This guide will help you create a simple REST service using Spring Boot. How forex api programmer bootstrap a Rest Service application with Spring Initializr?
How to create a Get REST Service for retrieving the courses that a student registered for? How to create a Post REST Service for registering a course for student? How to execute Rest Services from Postman? REST stands for REpresentational State Transfer. REST specifies a set of architectural constraints. Any service which satisfies these constraints is called RESTful Service.
The service results should be Cacheable. Service should assume a Layered architecture. Richardson Maturity Model Richardson Maturity Model is used to identify the maturity level of a Restful Web Service. Level 0 : Expose SOAP web services in REST style. However, HTTP Methods are not used. For example, to update an account, you do a PUT to .
The create an account, you do a POST to . You will tell not only about the information being requested but also about the next possible actions that the service consumer can do. When requesting information about a facebook user, a REST service can return user details along with information about how to get his recent posts, how to get his recent comments and how to retrieve his friend’s list. Using appropriate Request Methods Always use HTTP Methods. GET : Should not update anything. POST : Should create new resource.
Ideally return JSON with link to newly created resource. Same return codes as get possible. PUT : Update a known resource. DELETE : Used to delete a resource. Project Structure Following screenshot shows the structure of the project we will create. Rest controller exposing all the three service methods discussed above. Integration Tests for the Rest Services.
Unit Tests for the Rest Services. Launcher for the Spring Boot Application. To run the application, just launch this file as Java Application. Contains all the dependencies needed to build this project. We will use Spring Boot Starter Web. Bootstrapping REST Services with Spring Initializr Creating a REST service with Spring Initializr is a cake walk.
We will use Spring Web MVC as our web framework. If you want to understand all the files that are part of this project, you can go here. Implementing Business Service for your Application All applications need data. A student can take multiple courses. A course has an id, name, description and a list of steps you need to complete to finish the course. Exposing a Get Service for retrieving specific course of a student.