If a Spring Boot controller method is annotated with @GetMapping(produces = "application/json") and the client sends Accept: text/html, what will happen?

medium📝 component behavior Q5 of 15

Spring Boot - Request and Response Handling

If a Spring Boot controller method is annotated with @GetMapping(produces = "application/json") and the client sends Accept: text/html, what will happen?

ASpring Boot returns JSON anyway

BSpring Boot returns HTTP 406 Not Acceptable

CSpring Boot returns HTML format

DSpring Boot ignores Accept header and returns XML

Step-by-Step Solution

Solution:

Step 1: Check produces and Accept header mismatch
The method only produces JSON but client wants HTML.
Step 2: Understand Spring Boot behavior on mismatch
Spring Boot responds with HTTP 406 error when no matching format is found.
Final Answer:
Spring Boot returns HTTP 406 Not Acceptable -> Option B
Quick Check:
Mismatch Accept and produces = 406 error [OK]

Quick Trick: No matching format causes 406 Not Acceptable error [OK]

Common Mistakes:

Assuming server returns default JSON anyway
Thinking server converts formats automatically
Ignoring HTTP 406 error possibility

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More Spring Boot Quizzes

If a Spring Boot controller method is annotated with @GetMapping(produces = "application/json") and the client sends Accept: text/html, what will happen?

Step 1: Check produces and Accept header mismatch

Step 2: Understand Spring Boot behavior on mismatch

Final Answer:

Quick Check:

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