Spring Boot - Exception Handling
You wrote a custom exception handler to return Problem Details but the API returns a plain error message instead. What is the most likely cause?
You wrote a custom exception handler to return Problem Details but the API returns a plain error message instead. What is the most likely cause?
medium📝 Debug Q14 of 15
Step-by-Step Solution
Solution:
Step 1: Check exception handler setup
Custom handlers must use @ExceptionHandler to catch exceptions and format responses.Step 2: Identify missing annotation impact
Without @ExceptionHandler, Spring Boot won't invoke the handler, so default error response is sent.Final Answer:
The handler method is missing @ExceptionHandler annotation -> Option DQuick Check:
@ExceptionHandler missing = no custom error [OK]
Quick Trick: Always add @ExceptionHandler to custom error methods [OK]
Common Mistakes:
- Thinking controller mapping affects exception handling
- Assuming properties file controls error format
- Believing exception must extend RuntimeException
Master "Exception Handling" in Spring Boot
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