Try have exception advising in spring for RouterFunction (webflux)

ProblemWebExceptionHandler.kt

@Component
@Order(-2)
class GlobalErrorWebExceptionHandler(
        private val configurer: ServerCodecConfigurer,
        private val exceptionAdvisor: ExceptionAdvisor,
        private val errorAttributes: ErrorAttributes,
        private val resourceProperties: ResourceProperties,
        private val applicationContext: ApplicationContext)
    : AbstractErrorWebExceptionHandler(errorAttributes, resourceProperties, applicationContext) {

    init {
        this.setMessageWriters(configurer.writers)
    }

    override fun getRoutingFunction(errorAttributes: ErrorAttributes): RouterFunction<ServerResponse> {
        return RouterFunctions.route(RequestPredicates.all(), HandlerFunction {
            request: ServerRequest -> renderErrorResponse(request) 
        })
    }



    private fun renderErrorResponse(request: ServerRequest): Mono<ServerResponse> {
        return when (val throwable = getError(request)) {
            is Problem -> exceptionAdvisor.ProblemHandler(throwable, request.exchange())
            else -> exceptionAdvisor.handleThrowable(throwable, request.exchange())
        }.flatMap { it.toServerResponse() }

    }
}