[Solved] What does the @RequestParam annotation do in a Spring Boot controller? — Ans: It extracts query string parameters from the URL and passes them to the method. | Spring Boot

Spring Boot - REST Controllers

What does the @RequestParam annotation do in a Spring Boot controller?

AIt maps the URL path to a controller method.

BIt extracts query string parameters from the URL and passes them to the method.

CIt defines the HTTP method type like GET or POST.

DIt handles exceptions thrown by the controller.

Step-by-Step Solution

Solution:

Step 1: Understand the role of @RequestParam
@RequestParam is used to get values from the URL query string, like ?name=John.
Step 2: Compare with other annotations
@RequestMapping maps URLs, @RequestParam extracts query parameters, others handle HTTP methods or errors.
Final Answer:
It extracts query string parameters from the URL and passes them to the method. -> Option B
Quick Check:
@RequestParam reads query parameters = A [OK]

Quick Trick: Remember: @RequestParam reads URL query values [OK]

Common Mistakes:

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What does the @RequestParam annotation do in a Spring Boot controller?