Menu
I am trying to create my own ErrorWebExceptionHandler in Spring Boot 2 by extending the default one but my application fails to start with the following message:
Caused by: java.lang.IllegalArgumentException: Property 'messageWriters' is required
at org.springframework.boot.autoconfigure.web.reactive.error.AbstractErrorWebExceptionHandler.afterPropertiesSet(AbstractErrorWebExceptionHandler.java:214) ~[spring-boot-autoconfigure-2.0.4.RELEASE.jar:2.0.4.RELEASE]
My handler (Kotlin code):
@Component
@Order(-2)
class SampleErrorWebExceptionHandler(
errorAttributes: ErrorAttributes?,
resourceProperties: ResourceProperties?,
errorProperties: ErrorProperties?,
applicationContext: ApplicationContext?
) : DefaultErrorWebExceptionHandler(errorAttributes, resourceProperties, errorProperties, applicationContext) {
override fun logError(request: ServerRequest, errorStatus: HttpStatus) {
// do something
}
}
What could be the cause?
761
There are three ways that we can use onErrorResume to handle errors: Compute a dynamic fallback value. Execute an alternative path with a fallback method. Catch, wrap and re-throw an error, e.g., as a custom business exception.
Default value if mono is empty. If you want to provide a default value when the mono is completed without any data, then use defaultIfEmpty method. For example, the following code tries to fetch the customer data from the database by using the customer id .
Please try to add dependency of ServerCodecConfigurer in your constructor
GlobalErrorWebExceptionHandler(
ErrorAttributes errorAttributes,
ResourceProperties resourceProperties,
ApplicationContext applicationContext,
ServerCodecConfigurer configurer
) {
super(errorAttributes, resourceProperties, applicationContext);
this.setMessageWriters(configurer.getWriters());
}
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
