Garzec
Garzec
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Created by Garzec on 1/12/2025 in #java-help
How to apply request body validation with error details?
yes, I think I got this ( as shown in my code above )
56 replies
JCHJava Community | Help. Code. Learn.
Created by Garzec on 1/12/2025 in #java-help
How to apply request body validation with error details?
no, same for INTERNAL_SERVER_ERROR Is there some Spring magic required? Do I have to place this exception handler file into a specific directory with a conventional name or so...
56 replies
JCHJava Community | Help. Code. Learn.
Created by Garzec on 1/12/2025 in #java-help
How to apply request body validation with error details?
yes, the default Spring behavior for invalid request bodies I guess
56 replies
JCHJava Community | Help. Code. Learn.
Created by Garzec on 1/12/2025 in #java-help
How to apply request body validation with error details?
if /foo is valid, it executes the rest handler, if it's invalid then Spring responds with a 400, so handleValidationException never runs
56 replies
JCHJava Community | Help. Code. Learn.
Created by Garzec on 1/12/2025 in #java-help
How to apply request body validation with error details?
sorry, the function handleValidationException never runs
56 replies
JCHJava Community | Help. Code. Learn.
Created by Garzec on 1/12/2025 in #java-help
How to apply request body validation with error details?
yes please
56 replies
JCHJava Community | Help. Code. Learn.
Created by Garzec on 1/12/2025 in #java-help
How to apply request body validation with error details?
you only get a 400 with 
{
    "timestamp": "2025-01-12T18:11:01.102+00:00",
    "path": "/foo",
    "status": 400,
    "error": "Bad Request",
    "requestId": "2e927c69-2"
}
{
    "timestamp": "2025-01-12T18:11:01.102+00:00",
    "path": "/foo",
    "status": 400,
    "error": "Bad Request",
    "requestId": "2e927c69-2"
}
56 replies
JCHJava Community | Help. Code. Learn.
Created by Garzec on 1/12/2025 in #java-help
How to apply request body validation with error details?
nothing, when I set a breakpoint, it won't run the function
56 replies
JCHJava Community | Help. Code. Learn.
Created by Garzec on 1/12/2025 in #java-help
How to apply request body validation with error details?
you mean like so? 
import org.springframework.http.HttpStatus
import org.springframework.validation.FieldError
import org.springframework.web.bind.MethodArgumentNotValidException
import org.springframework.web.bind.annotation.ExceptionHandler
import org.springframework.web.bind.annotation.ResponseStatus
import org.springframework.web.bind.annotation.RestControllerAdvice

@RestControllerAdvice
class ValidationExceptionHandler {
    @ResponseStatus(HttpStatus.BAD_REQUEST)
    @ExceptionHandler(MethodArgumentNotValidException::class)
    fun handleValidationException(
        exception: MethodArgumentNotValidException
    ): ValidationErrorResponse {
        val fieldErrors = exception.bindingResult.allErrors.associate { error ->
            val fieldName = (error as FieldError).field
            val errorMessage = error.defaultMessage

            fieldName to errorMessage
        }

        return ValidationErrorResponse(fieldErrors)
    }
}

data class ValidationErrorResponse(val fieldErrors: Map<String, String?>)
import org.springframework.http.HttpStatus
import org.springframework.validation.FieldError
import org.springframework.web.bind.MethodArgumentNotValidException
import org.springframework.web.bind.annotation.ExceptionHandler
import org.springframework.web.bind.annotation.ResponseStatus
import org.springframework.web.bind.annotation.RestControllerAdvice

@RestControllerAdvice
class ValidationExceptionHandler {
    @ResponseStatus(HttpStatus.BAD_REQUEST)
    @ExceptionHandler(MethodArgumentNotValidException::class)
    fun handleValidationException(
        exception: MethodArgumentNotValidException
    ): ValidationErrorResponse {
        val fieldErrors = exception.bindingResult.allErrors.associate { error ->
            val fieldName = (error as FieldError).field
            val errorMessage = error.defaultMessage

            fieldName to errorMessage
        }

        return ValidationErrorResponse(fieldErrors)
    }
}

data class ValidationErrorResponse(val fieldErrors: Map<String, String?>)
That still doesn't work 😦
56 replies
JCHJava Community | Help. Code. Learn.
Created by Garzec on 1/12/2025 in #java-help
How to apply request body validation with error details?
@ayylmao123xdd thank you. I tried to follow the blog post and just changed from @ControllerAdvice to @RestControllerAdvice since ErrorMessage is just a custom type, I want to make use of problem details later on Still, doesn't work 😦
56 replies
JCHJava Community | Help. Code. Learn.
Created by Garzec on 1/12/2025 in #java-help
How to apply request body validation with error details?
would you mind telling me how to do this? ValidationExceptionHandler is wrong?
56 replies