Mil*_*nda 5 spring-boot spring-webflux
我试图ErrorWebExceptionHandler通过扩展默认启动项在Spring Boot 2中创建自己的启动项,但是我的应用程序无法以以下消息启动:
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]
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我的处理程序(科特琳代码):
@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
}
}
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可能是什么原因?
您需要messageWriters在该实例上设置on,因为这里需要它们。您可能应该将其创建为a @Bean,就像Spring Boot在专用自动配置中所做的那样。
请尝试在构造函数中添加ServerCodecConfigurer的依赖项
GlobalErrorWebExceptionHandler(ErrorAttributes errorAttributes,
ResourceProperties resourceProperties, ApplicationContext applicationContext, ServerCodecConfigurer configurer) {
super(errorAttributes, resourceProperties, applicationContext);
this.setMessageWriters(configurer.getWriters());
}
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