异常时骡请求回复挂起

Question

我有一个 mule 流程，我在其中配置了请求回复范围。流程如下：

<flow name="RequestReplyFlow">
    <http:listener config-ref="HTTP_Listener_Configuration" path="/test" doc:name="HTTP" />
    <set-payload value="#['Sample Payload']" doc:name="Set Payload" />
    <request-reply doc:name="Request-Reply">
        <vm:outbound-endpoint exchange-pattern="one-way" path="request" doc:name="VM" />
        <vm:inbound-endpoint exchange-pattern="one-way" path="reply" doc:name="VM" />
    </request-reply>
</flow>

和

<flow name="RequestReplyFlow1">
    <vm:inbound-endpoint exchange-pattern="one-way" path="request" doc:name="VM" />
    <logger message="Executing with payload: #[payload]" level="INFO" doc:name="Logger" />
    <component class="org.ram.BusinessComponent" doc:name="Java" />
    <catch-exception-strategy doc:name="Catch Exception Strategy">
        <logger level="INFO" doc:name="Logger"/>
    </catch-exception-strategy>
</flow>

当组件org.ram.BusinessComponent抛出异常时，调用上述流程的浏览器刚刚挂掉，完全没有响应。

当org.ram.BusinessComponent 没有抛出异常时，浏览器会得到响应。

谁能解决这个问题？

Answer 1

我可以在 Mule 3.6.2 中重现该问题。问题是，当抛出异常时，流程不会重定向到请求-回复以继续流程，在这些情况下，您可以通过添加“vm:outbound-endpoint”在“catch-exception”中手动指定重定向" 与“回复”路径。示例如下：

<flow name="RequestReplyFlow">
    <http:listener config-ref="HTTP_Listener_Configuration" path="/test" doc:name="HTTP" />
    <set-payload value="#['Sample Payload']" doc:name="Set Payload" />
    <request-reply doc:name="Request-Reply">
        <vm:outbound-endpoint exchange-pattern="one-way" path="request" doc:name="VM" />
        <vm:inbound-endpoint exchange-pattern="one-way" path="reply" doc:name="VM" />
    </request-reply>
</flow>

<flow name="RequestReplyFlow1">
    <vm:inbound-endpoint exchange-pattern="one-way" path="request" doc:name="VM" />
    <logger message="Executing with payload: #[payload]" level="INFO" doc:name="Logger" />
    <component class="org.ram.BusinessComponent" doc:name="Java" />
    <catch-exception-strategy doc:name="Catch Exception Strategy">
        <logger level="INFO" doc:name="Logger"/>
        <vm:outbound-endpoint exchange-pattern="one-way" path="reply" doc:name="VM" />
    </catch-exception-strategy>
</flow>