Chapter 16: Spring Boot REST API with Request Param | Spring Boot Course

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Spring Boot REST API with Path Variable — @PathVariable

Introduction

In this chapter, we will explore how to create a Spring Boot REST API that uses the @RequestParam annotation to handle query parameters. Query parameters are a common way to pass data to REST endpoints, especially for filtering, sorting, or paginating results. We will continue from the previous chapters and extend our StudentController to demonstrate the use of @RequestParam.

@RequestParam Annotation

What is @RequestParam?

The @RequestParam annotation in Spring Boot is used to extract query parameters from the URL and bind them to method parameters in a controller. It helps in mapping specific query parameters in the URL to method parameters, allowing for more flexible and dynamic request handling.

How @RequestParam Works

When a client sends a request to a specific URL with query parameters, the @RequestParam annotation extracts these parameters and assigns them to method parameters. This is useful for accessing and processing additional information provided in the query string of…