[Solved] In Spring Boot, what is the role of the @PathVariable annotation in a REST controller method? — Ans: It binds a method parameter to a URI template variable. | Spring Boot

Spring Boot - REST Controllers

In Spring Boot, what is the role of the @PathVariable annotation in a REST controller method?

AIt binds a method parameter to a URI template variable.

BIt binds a method parameter to a query string parameter.

CIt binds a method parameter to a request header value.

DIt binds a method parameter to a form data parameter.

Step-by-Step Solution

Solution:

Step 1: Understand URI Templates
URI templates contain variables enclosed in braces, e.g., /user/{id}.
Step 2: Role of @PathVariable
@PathVariable binds the method parameter to the value of the URI template variable.
Final Answer:
It binds a method parameter to a URI template variable. -> Option A
Quick Check:
Check if the parameter matches the URI variable [OK]

Quick Trick: Binds method param to URI variable, not query or headers [OK]

Common Mistakes:

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