I am using javax validations in my controller with @Valid @RequestBody. When the server receives invalid data it throws error but I want to handle that error and return custom formatted error. I am unable to catch exception in my controller advice. I am using spring webFlux so can't use the bindingResult. How can I handle that exception? Here is my code
Controller
@PostMapping fun createPerson(@Valid @RequestBody resource: PersonResource): Mono<Person> { return personService.save(resource.toPerson()) }Resource
data class PersonResource( val id: String?, @field:NotEmpty val name: String, ...
}ErrorHandler
@ControllerAdvice
class ApiErrorHandler { @ExceptionHandler(IllegalArgumentException::class) fun handleValidationErrors(e: IllegalArgumentException): ResponseEntity<*> { // never reaches here }
}1 Answer
I think you are catching a different exception. I am using @ControllerAdvice to catch WebExchangeBindException as validation errors and it worked for me.
A specialization of ServerWebInputException thrown when after data binding and validation failure. Implements BindingResult (and its super-interface Errors) to allow for direct analysis of binding and validation errors.
