@GetMapping

Learn how to create a GET mapping in the REST service that returns a list of POJOs as JSON.

We'll cover the following

Defining the service layer method
- Calling the findAll repository method
- Defining the controller method
Testing the endpoint

Starting from this lesson, we will build a REST service that provides basic CRUD functionality. The client sends an HTTP request to the REST service. The dispatcher servlet handles the request and if the request has JSON data, the HttpMessageConverter converts it to Java objects. The request is mapped to a controller which calls service layer methods. The service layer delegates the call to repository and returns the data as POJO. The MessageConverter converts the data to JSON and it is sent back to the client. The flow of request is shown below:

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Introduction

Spring Basics

Spring In-depth

Spring Boot

Spring JDBC

Spring Data JPA

Spring REST Fundamentals

Spring REST Advanced Operations and Error Management

Database Relationships in Spring

Spring Aspect Orientated Programming (AOP)

Configuring a Basic Enterprise Web Application

Spring MVC Fundamentals

Spring MVC Advanced Concepts

Unit Testing in Spring

Interview Questions

Epilogue

@GetMapping