Mule 流末尾错误路径上的HTTP出站端点异常

当我在子流中使用HTTP出站端点（Mule 3.3.1）时，如下所示：

<http:outbound-endpoint exchange-pattern="request-response" host="www.myhost.com" port="80" path="SOMESERVICE.asmx?wsdl" contentType="text/xml" method="GET"/>

完整配置：

<flow name="main">
    <http:inbound-endpoint exchange-pattern="request-response" address="http://localhost:8181/my-service/v1" doc:name="HTTP"/>
    <cxf:proxy-service doc:name="SOAP" wsdlLocation="classpath:my-1.0.wsdl" 
        namespace="http://myservice.com/wsdl/my-service/1.0" service="myService" payload="envelope"/>
    <logger level="TRACE" doc:name="Payload Logger" category="main" message="Payload: #[payload:java.lang.String]"/>

    <flow-ref name="ping"/>

    <!-- Exception should be catched here. -->
    <catch-exception-strategy doc:name="Catch Exception Strategy">
        <logger message="Exception: #[payload:java.lang.String]" level="ERROR" category="main" doc:name="Logger"/>
        <set-payload value="&lt;dummy/&gt;" doc:name="Reset Payload"/>
        <mulexml:xslt-transformer maxIdleTransformers="2" maxActiveTransformers="5" xsl-file="exception-response.xslt" doc:name="Exception Transformer">
            <mulexml:context-property key="faultString" value="Unexpected Exception"/>
            <mulexml:context-property key="errorCode" value="-1"/>
            <mulexml:context-property key="errorMessage" value="Unexpected Exception."/>
        </mulexml:xslt-transformer>
    </catch-exception-strategy>
</flow>

<sub-flow name="ping">
    <logger message="Request payload: #[payload:java.lang.String]" level="TRACE" category="ping" doc:name="Logger"/>

    <flow-ref name="http" />

    <mulexml:xslt-transformer maxIdleTransformers="2" maxActiveTransformers="5" doc:name="Response Transformation" xsl-file="response.xslt"/>

    <!-- Here the correct response is printed and no exception. -->
    <logger message="Response payload after transformation: #[payload:java.lang.String]" level="TRACE" category="ping" doc:name="Logger"/>
</sub-flow>

<sub-flow name="http">
    <logger message="Request payload: #[payload:java.lang.String]" level="TRACE" category="http" />

    <http:outbound-endpoint exchange-pattern="request-response" address="www.myhost.com:80/SOMESERVICE.asmx?wsdl" contentType="text/xml" method="GET"/>

    <choice doc:name="Choice">
        <when expression="#[message.inboundProperties['http.status'] == 200]">
            <set-payload value="&lt;result&gt;OK&lt;/result&gt;" doc:name="OK"/>
        </when>
        <otherwise>
            <set-payload value="&lt;result&gt;NotAvailable&lt;/result&gt;" doc:name="NotAvailable"/>
        </otherwise>
    </choice>
</sub-flow>

我的主流确实使用捕获异常策略，但这并没有捕获异常。 你知道哪里不对吗

干杯

---

Tuno

我猜在不查看配置的情况下，您可能已将

子流

声明为

---

而非HTTP状态>=400本身不被视为例外
如果你想让你的异常策略发挥作用，你需要根据HTTP状态码抛出一个异常。只需在

之后添加以下内容：

<message-filter throwOnUnaccepted="true">
    <message-property-filter pattern="message.inboundProperties['http.status'] >= 400" />
</message-filter>

您能分享您的完整配置吗？添加了完整配置。这也正是我的想法。我最初确实有

，但最近被重构为

。问题仍然是一样的。奇怪的是，在

之后，有效负载是正确的xml响应，而不是异常。请参见

和

。我的日志证实了这一点。我不知道为什么这个异常仍然存在于主流程的末尾。添加

消息过滤器

只会抛出

消息已被过滤器拒绝。消息负载的类型为：byte[]

exception，并隐藏不应该存在的原始异常。

Caused by: org.mule.api.transport.DispatchException: Failed to route event via endpoint: DefaultOutboundEndpoint{endpointUri=http://www.myhost.com:80/SOMESERVICE.asmx?wsdl, connector=HttpConnector
{
  name=connector.http.mule.default
  lifecycle=start
  this=6215723d
  numberOfConcurrentTransactedReceivers=4
  createMultipleTransactedReceivers=true
  connected=true
  supportedProtocols=[http]
  serviceOverrides=<none>
}
,  name='endpoint.http.www.myhost.com.80.SOMESERVICE.asmx.wsdl', mep=REQUEST_RESPONSE, properties={wsdl=, http.method=GET}, transactionConfig=Transaction{factory=null, action=INDIFFERENT, timeout=0}, deleteUnacceptedMessages=false, initialState=started, responseTimeout=10000, endpointEncoding=UTF-8, disableTransportTransformer=false}. Message payload is of type: GetMethod
    at org.mule.transport.http.HttpClientMessageDispatcher.doSend(HttpClientMessageDispatcher.java:278)

Caused by: org.mule.transport.http.HttpResponseException: Not Found, code: 404
    at org.mule.transport.http.HttpClientMessageDispatcher.doSend(HttpClientMessageDispatcher.java:278)

<flow name="main">
    <http:inbound-endpoint exchange-pattern="request-response" address="http://localhost:8181/my-service/v1" doc:name="HTTP"/>
    <cxf:proxy-service doc:name="SOAP" wsdlLocation="classpath:my-1.0.wsdl" 
        namespace="http://myservice.com/wsdl/my-service/1.0" service="myService" payload="envelope"/>
    <logger level="TRACE" doc:name="Payload Logger" category="main" message="Payload: #[payload:java.lang.String]"/>

    <flow-ref name="ping"/>

    <!-- Exception should be catched here. -->
    <catch-exception-strategy doc:name="Catch Exception Strategy">
        <logger message="Exception: #[payload:java.lang.String]" level="ERROR" category="main" doc:name="Logger"/>
        <set-payload value="&lt;dummy/&gt;" doc:name="Reset Payload"/>
        <mulexml:xslt-transformer maxIdleTransformers="2" maxActiveTransformers="5" xsl-file="exception-response.xslt" doc:name="Exception Transformer">
            <mulexml:context-property key="faultString" value="Unexpected Exception"/>
            <mulexml:context-property key="errorCode" value="-1"/>
            <mulexml:context-property key="errorMessage" value="Unexpected Exception."/>
        </mulexml:xslt-transformer>
    </catch-exception-strategy>
</flow>

<sub-flow name="ping">
    <logger message="Request payload: #[payload:java.lang.String]" level="TRACE" category="ping" doc:name="Logger"/>

    <flow-ref name="http" />

    <mulexml:xslt-transformer maxIdleTransformers="2" maxActiveTransformers="5" doc:name="Response Transformation" xsl-file="response.xslt"/>

    <!-- Here the correct response is printed and no exception. -->
    <logger message="Response payload after transformation: #[payload:java.lang.String]" level="TRACE" category="ping" doc:name="Logger"/>
</sub-flow>

<sub-flow name="http">
    <logger message="Request payload: #[payload:java.lang.String]" level="TRACE" category="http" />

    <http:outbound-endpoint exchange-pattern="request-response" address="www.myhost.com:80/SOMESERVICE.asmx?wsdl" contentType="text/xml" method="GET"/>

    <choice doc:name="Choice">
        <when expression="#[message.inboundProperties['http.status'] == 200]">
            <set-payload value="&lt;result&gt;OK&lt;/result&gt;" doc:name="OK"/>
        </when>
        <otherwise>
            <set-payload value="&lt;result&gt;NotAvailable&lt;/result&gt;" doc:name="NotAvailable"/>
        </otherwise>
    </choice>
</sub-flow>

<message-filter throwOnUnaccepted="true">
    <message-property-filter pattern="message.inboundProperties['http.status'] >= 400" />
</message-filter>