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Spring Boot 4 Complete Guide · Lesson

Handling HTTP Requests & Responses

Learn to process request parameters, path variables, request bodies, and craft appropriate HTTP responses.

Requests & Responses

When you interact with a web application, your browser sends an HTTP Request to a server. The server then processes it and sends back an HTTP Response.

In Spring Boot, we write code to listen for these requests, extract information, perform actions, and then craft a suitable response.

Getting Query Params: @RequestParam

Sometimes, extra data is sent in the URL after a ?, like /search?keyword=java. These are query parameters.

Spring Boot uses the @RequestParam annotation to easily extract these values into your method parameters.

All lessons in this course

  1. Creating REST Controllers
  2. Handling HTTP Requests & Responses
  3. Input Validation & Error Handling
  4. Documenting REST APIs with OpenAPI and Swagger
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