一、Problemdetails

RFC 7807: RFC 7807: Problem Details for HTTP APIs

错误信息返回新格式

源码：

@Configuration(proxyBeanMethods = false)
//配置过一个属性 spring.mvc.problemdetails.enabled=true
@ConditionalOnProperty(prefix = "spring.mvc.problemdetails", name = "enabled", havingValue = "true")
static class ProblemDetailsErrorHandlingConfiguration {

    @Bean
    @ConditionalOnMissingBean(ResponseEntityExceptionHandler.class)
    ProblemDetailsExceptionHandler problemDetailsExceptionHandler() {
        return new ProblemDetailsExceptionHandler();
    }

}

1、ProblemDetailsExceptionHandler 是一个 @ControllerAdvice集中处理系统异常。

2、处理以下异常。如果系统出现以下异常，会被SpringBoot支持以 RFC 7807规范方式返回错误数据。

	@ExceptionHandler({
			HttpRequestMethodNotSupportedException.class, //请求方式不支持
			HttpMediaTypeNotSupportedException.class,
			HttpMediaTypeNotAcceptableException.class,
			MissingPathVariableException.class,
			MissingServletRequestParameterException.class,
			MissingServletRequestPartException.class,
			ServletRequestBindingException.class,
			MethodArgumentNotValidException.class,
			NoHandlerFoundException.class,
			AsyncRequestTimeoutException.class,
			ErrorResponseException.class,
			ConversionNotSupportedException.class,
			TypeMismatchException.class,
			HttpMessageNotReadableException.class,
			HttpMessageNotWritableException.class,
			BindException.class
		})

 没有开启problemdetails

# problemdetails默认为关闭状态
spring.mvc.problemdetails.enabled=false

开启problemdetails

# problemdetails默认为关闭状态
spring.mvc.problemdetails.enabled=true

 使用了新的媒体类型