我已经转换为字节数组，但我不断收到此错误：
ERROR 2015-02-25 11:12:30,517 [[ESR].HTTP_Request_Listener.worker.01] org.mule.exception.DefaultMessagingExceptionStrategy:
********************************************************************************
Message : Response code 400 mapped as failure. Message payload is of type: BufferInputStream
Code : MULE_ERROR--2
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Exception stack is:
1. Response code 400 mapped as failure. Message payload is of type: BufferInputStream (org.mule.module.http.internal.request.ResponseValidatorException)
org.mule.module.http.internal.request.SuccessStatusCodeValidator:37 (http://www.mulesoft.org/docs/site/current3/apidocs/org/mule/module/http/internal/request/ResponseValidatorException.html)
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Root Exception stack trace:
org.mule.module.http.internal.request.ResponseValidatorException: Response code 400 mapped as failure. Message payload is of type: BufferInputStream
at org.mule.module.http.internal.request.SuccessStatusCodeValidator.validate(SuccessStatusCodeValidator.java:37)
at org.mule.module.http.internal.request.DefaultHttpRequester.innerProcess(DefaultHttpRequester.java:202)
at org.mule.module.http.internal.request.DefaultHttpRequester.process(DefaultHttpRequester.java:166)
+ 3 more (set debug level logging or '-Dmule.verbose.exceptions=true' for everything)
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这是我的流程：
<sub-flow name="requestBeanCreate">
<object-to-byte-array-transformer />
<set-payload value="#[app.registry.messageBean.createServiceRequest(message.inboundProperties['http.uri.params']['name'],payload)]"/>
</sub-flow>
<flow name = "RequestsEntryFlow" >
<http:listener allowedMethods="POST" parseRequest="false" config-ref="HTTP_Request_Listener" path="/{name}" doc:name="HTTP Entry Flow" />
<flow-ref name="requestBeanCreate" />
<choice doc:name="Choice">
<when expression="#[app.registry.messageBean.isEMCRequired(payload)]">
<jms:outbound-endpoint connector-ref="jms-connector" ref="EMCRequiredRequestsQueue" />
</when>
<otherwise>
<flow-ref name="req" />
</otherwise>
</choice>
</flow>
<http:request-config parseResponse="false" name="HTTP_Request_Configuration" />
<sub-flow name = "req">
<set-variable variableName="id" value="#[payload]" doc:name="Variable" />
<set-variable variableName="destination" value="#[app.registry.routerBean.getDestination(app.registry.messageBean.getReceiverID(payload))]" doc:name="Variable" />
<set-payload value="#[app.registry.messageBean.sendRequestToDestination(payload)]" />
<processor-chain>
<http:request parseResponse="false" config-ref="HTTP_Request_Configuration" host="#[flowVars.destination]" port="80" path="/" method="POST" />
<object-to-byte-array-transformer />
<expression-component>
app.registry.messageBean.sendResponseToSender(flowVars.id);
app.registry.messageBean.messageProcessedSuccessfully(flowVars.id);
</expression-component>
</processor-chain>
</sub-flow>
您似乎从 HTTP 请求中获取了 400 状态代码，这甚至在到达转换器之前就导致了异常。尝试添加一个涵盖所有情况的成功状态代码验证器（您可以选择稍后考虑哪些情况）：
<http:request parseResponse="false" config-ref="HTTP_Request_Configuration" host="#[flowVars.destination]" port="80" path="/" method="POST">
<http:success-status-code-validator values="0..599"/>
</http:request>
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