gateway 进行Dubbo 调用，设置了Route 降级，降级后返回httpstatus 为 200 ，内容为空，而不是设置的返回状态，调整多个设置都无用

boengood commented 2 years ago

Issue Description

通过 Route ID 设置了降级后，在gatewayFilter 通过dubbo调用鉴权服务，鉴权服务返回错误后，首次通过接口调用返回状态 500 是正常，但降级后，返回状态是 200 ，字符为空，

filter 设置了 Mono 返回也无效
在 ErrorWebExceptionHandler 获取到了 ParamFlowException ，按照这篇文章的，设置了自定义返回 Mono 也无效，依然改变了我设置的返回状态和内容
未进入 BlockRequestHandler

错误信息，但拦截错误，设置了返回状态也无用： com.alibaba.csp.sentinel.slots.block.flow.param.ParamFlowException: $D Suppressed: reactor.core.publisher.FluxOnAssembly$OnAssemblyException: Error has been observed at the following site(s): | checkpoint ⇢ springfox.boot.starter.autoconfigure.SwaggerUiWebFluxConfiguration$CustomWebFilter [DefaultWebFilterChain] | checkpoint ⇢ org.springframework.web.cors.reactive.CorsWebFilter [DefaultWebFilterChain] | checkpoint ⇢ org.springframework.cloud.gateway.filter.WeightCalculatorWebFilter [DefaultWebFilterChain] | checkpoint ⇢ org.springframework.boot.actuate.metrics.web.reactive.server.MetricsWebFilter [DefaultWebFilterChain] |_ checkpoint ⇢ HTTP GET "/demo/dubbo/echo" [ExceptionHandlingWebHandler] Stack trace:

Tell us your environment

  <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-gateway</artifactId>
        <version>2.2.3.RELEASE</version>
    </dependency>

    <dependency>
        <groupId>com.alibaba.cloud</groupId>
        <artifactId>spring-cloud-starter-alibaba-sentinel</artifactId>
        <version>2.2.5.RELEASE</version>
    </dependency>

    <dependency>
        <groupId>com.alibaba.cloud</groupId>
        <artifactId>spring-cloud-alibaba-sentinel-gateway</artifactId>
        <version>2.2.5.RELEASE</version>
    </dependency>

Anything else we need to know?

如何设置，才能返回我设置的状态和内容？或者还有其他解决方案吗？

boengood commented 2 years ago

简单说，就是配置了限流后，如果没有进入spring boot 服务，直接gateway 返回了，就会导致返回为空的问题

kiritoowo commented 2 years ago

有解决方案了嘛？

alibaba / Sentinel