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How can you separate protocol-specific error handling from the business logic in an API implementation class?

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Pragya Keshap answered on February 17, 2023 Popularity 1/10 Helpfulness 1/10

answer How can you separate protocol-specific error handling from the business logic in an API implementation class?

How can you separate protocol-specific error handling from the business logic in an API implementation class?

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You can use a common class annotated as @RestControllerAdvice

and declare exception handler methods for the exceptions that the business

logic might throw. For example, mapping InvalidInputException to the

HTTP response code UNPROCESSABLE_ENTITY might appear as follows:

@ResponseStatus(UNPROCESSABLE_ENTITY)
@ExceptionHandler(InvalidInputException.class)
public @ResponseBody HttpErrorInfo handleInvalidInputException(
ServerHttpRequest request, Exception ex) {
 return createHttpErrorInfo(UNPROCESSABLE_ENTITY, request, ex);
}

Popularity 1/10 Helpfulness 1/10 Language java

Source: Grepper

Tags: business-logic error-handling implementation java

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