我最近开始在 Anypoint 工作室中使用 Mule ，当然我经常会遇到错误。
目前我正在使用<cxf:jaxws-client>和<http:outbound-endpoint>访问 SOAP 服务，并且从我得到的SOAP响应中，我想对特定的body元素执行检查。
这是我的流程：
<flow name="Send-To-Selligent">
<cxf:jaxws-client
wsdlLocation="http://online.vikingdirekt.at/automation/individual.asmx?WSDL"
clientClass="org.tempuri.Individual" port="IndividualSoap" operation="TriggerCampaign"
enableMuleSoapHeaders="false" doc:name="CXF">
<cxf:inInterceptors>
<spring:bean class="org.apache.cxf.interceptor.LoggingInInterceptor" />
</cxf:inInterceptors>
<cxf:outInterceptors>
<spring:bean class="org.apache.cxf.interceptor.LoggingOutInterceptor" />
</cxf:outInterceptors>
</cxf:jaxws-client>
<mulexml:dom-to-xml-transformer
doc:name="DOM to XML" />
<http:outbound-endpoint exchange-pattern="request-response"
address="http://online.vikingdirekt.at/automation/individual.asmx"
method="POST" doc:name="HTTP">
<response>
<object-to-string-transformer />
</response>
</http:outbound-endpoint>
<message-filter onUnaccepted="ExceptionFlow"
doc:name="SOAP response must be successfull">
<expression-filter
expression="#[xpath3('/soap:Envelope/soap:Body/TriggerCampaignResponse/TriggerCampaignResult').text == '0']"
doc:name="Expression" />
</message-filter>
</flow>
从mule debuging我已经提取了这个信息：
在<http:outbound-endpoint>有效负载包含ReleasingInputStream之后，我转换为字符串（soap响应xml）并带有
<response>
<object-to-string-transformer />
</response>
不幸的是，当流量达到xpath3(...)
我明白了
2015-05-06 15:56:29 WARN PhaseInterceptorChain:289 - Interceptor for {http://tempuri.org/}Individual#{http://tempuri.org/}TriggerCampaign has thrown exception, unwinding now
org.apache.cxf.interceptor.Fault: Execution of the expression "xpath3('/soap:Envelope/soap:Body/TriggerCampaignResponse/TriggerCampaignResult').text == '0'" failed. (org.mule.api.expression.ExpressionRuntimeException). Message payload is of type: String
at org.mule.module.cxf.transport.MuleUniversalConduit$2.handleMessage(MuleUniversalConduit.java:194)
at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:263)
at org.apache.cxf.endpoint.ClientImpl.doInvoke(ClientImpl.java:531)
at org.apache.cxf.endpoint.ClientImpl.invoke(ClientImpl.java:462)
at org.apache.cxf.endpoint.ClientImpl.invoke(ClientImpl.java:365)
at org.apache.cxf.endpoint.ClientImpl.invoke(ClientImpl.java:318)
at org.apache.cxf.frontend.ClientProxy.invokeSync(ClientProxy.java:95)
at org.apache.cxf.jaxws.JaxWsClientProxy.invoke(JaxWsClientProxy.java:134)
at com.sun.proxy.$Proxy44.triggerCampaign(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.mule.module.cxf.CxfOutboundMessageProcessor.doSendWithProxy(CxfOutboundMessageProcessor.java:185)
at org.mule.module.cxf.CxfOutboundMessageProcessor.process(CxfOutboundMessageProcessor.java:127)
at org.mule.execution.ExceptionToMessagingExceptionExecutionInterceptor.execute(ExceptionToMessagingExceptionExecutionInterceptor.java:24)
at org.mule.execution.MessageProcessorNotificationExecutionInterceptor.execute(MessageProcessorNotificationExecutionInterceptor.java:58)
at org.mule.execution.MessageProcessorExecutionTemplate.execute(MessageProcessorExecutionTemplate.java:44)
at org.mule.processor.chain.DefaultMessageProcessorChain.doProcess(DefaultMessageProcessorChain.java:94)
at org.mule.processor.chain.AbstractMessageProcessorChain.process(AbstractMessageProcessorChain.java:67)
at org.mule.execution.ExceptionToMessagingExceptionExecutionInterceptor.execute(ExceptionToMessagingExceptionExecutionInterceptor.java:24)
at org.mule.execution.MessageProcessorExecutionTemplate.execute(MessageProcessorExecutionTemplate.java:44)
at org.mule.processor.AbstractInterceptingMessageProcessorBase.processNext(AbstractInterceptingMessageProcessorBase.java:102)
at org.mule.interceptor.AbstractEnvelopeInterceptor.process(AbstractEnvelopeInterceptor.java:51)
at org.mule.processor.AsyncInterceptingMessageProcessor.processNextTimed(AsyncInterceptingMessageProcessor.java:118)
at org.mule.processor.AsyncInterceptingMessageProcessor$AsyncMessageProcessorWorker$1.process(AsyncInterceptingMessageProcessor.java:189)
at org.mule.processor.AsyncInterceptingMessageProcessor$AsyncMessageProcessorWorker$1.process(AsyncInterceptingMessageProcessor.java:182)
at org.mule.execution.ExecuteCallbackInterceptor.execute(ExecuteCallbackInterceptor.java:16)
at org.mule.execution.HandleExceptionInterceptor.execute(HandleExceptionInterceptor.java:30)
at org.mule.execution.HandleExceptionInterceptor.execute(HandleExceptionInterceptor.java:14)
at org.mule.execution.BeginAndResolveTransactionInterceptor.execute(BeginAndResolveTransactionInterceptor.java:54)
at org.mule.execution.ResolvePreviousTransactionInterceptor.execute(ResolvePreviousTransactionInterceptor.java:44)
at org.mule.execution.SuspendXaTransactionInterceptor.execute(SuspendXaTransactionInterceptor.java:50)
at org.mule.execution.ValidateTransactionalStateInterceptor.execute(ValidateTransactionalStateInterceptor.java:40)
at org.mule.execution.IsolateCurrentTransactionInterceptor.execute(IsolateCurrentTransactionInterceptor.java:41)
at org.mule.execution.ExternalTransactionInterceptor.execute(ExternalTransactionInterceptor.java:48)
at org.mule.execution.RethrowExceptionInterceptor.execute(RethrowExceptionInterceptor.java:28)
at org.mule.execution.RethrowExceptionInterceptor.execute(RethrowExceptionInterceptor.java:13)
at org.mule.execution.TransactionalErrorHandlingExecutionTemplate.execute(TransactionalErrorHandlingExecutionTemplate.java:109)
at org.mule.execution.TransactionalErrorHandlingExecutionTemplate.execute(TransactionalErrorHandlingExecutionTemplate.java:30)
at org.mule.processor.AsyncInterceptingMessageProcessor$AsyncMessageProcessorWorker.doRun(AsyncInterceptingMessageProcessor.java:181)
at org.mule.work.AbstractMuleEventWork.run(AbstractMuleEventWork.java:39)
at org.mule.work.WorkerContext.run(WorkerContext.java:286)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.mule.api.MessagingException: Execution of the expression "xpath3('/soap:Envelope/soap:Body/TriggerCampaignResponse/TriggerCampaignResult').text == '0'" failed. (org.mule.api.expression.ExpressionRuntimeException). Message payload is of type: String
at org.mule.execution.ExceptionToMessagingExceptionExecutionInterceptor.execute(ExceptionToMessagingExceptionExecutionInterceptor.java:32)
at org.mule.execution.MessageProcessorNotificationExecutionInterceptor.execute(MessageProcessorNotificationExecutionInterceptor.java:58)
at org.mule.execution.MessageProcessorExecutionTemplate.execute(MessageProcessorExecutionTemplate.java:44)
at org.mule.processor.chain.DefaultMessageProcessorChain.doProcess(DefaultMessageProcessorChain.java:94)
at org.mule.processor.chain.AbstractMessageProcessorChain.process(AbstractMessageProcessorChain.java:67)
at org.mule.execution.ExceptionToMessagingExceptionExecutionInterceptor.execute(ExceptionToMessagingExceptionExecutionInterceptor.java:24)
at org.mule.execution.MessageProcessorExecutionTemplate.execute(MessageProcessorExecutionTemplate.java:44)
at org.mule.processor.AbstractInterceptingMessageProcessorBase.processNext(AbstractInterceptingMessageProcessorBase.java:102)
at org.mule.processor.AbstractFilteringMessageProcessor.process(AbstractFilteringMessageProcessor.java:40)
at org.mule.execution.ExceptionToMessagingExceptionExecutionInterceptor.execute(ExceptionToMessagingExceptionExecutionInterceptor.java:24)
at org.mule.execution.MessageProcessorNotificationExecutionInterceptor.execute(MessageProcessorNotificationExecutionInterceptor.java:58)
at org.mule.execution.MessageProcessorExecutionTemplate.execute(MessageProcessorExecutionTemplate.java:44)
at org.mule.processor.chain.DefaultMessageProcessorChain.doProcess(DefaultMessageProcessorChain.java:94)
at org.mule.processor.chain.AbstractMessageProcessorChain.process(AbstractMessageProcessorChain.java:67)
at org.mule.execution.ExceptionToMessagingExceptionExecutionInterceptor.execute(ExceptionToMessagingExceptionExecutionInterceptor.java:24)
at org.mule.execution.MessageProcessorExecutionTemplate.execute(MessageProcessorExecutionTemplate.java:44)
at org.mule.processor.AbstractInterceptingMessageProcessorBase.processNext(AbstractInterceptingMessageProcessorBase.java:102)
at org.mule.module.cxf.CxfOutboundMessageProcessor.processNext(CxfOutboundMessageProcessor.java:160)
at org.mule.module.cxf.transport.MuleUniversalConduit.processNext(MuleUniversalConduit.java:345)
at org.mule.module.cxf.transport.MuleUniversalConduit.dispatchMuleMessage(MuleUniversalConduit.java:248)
at org.mule.module.cxf.transport.MuleUniversalConduit$2.handleMessage(MuleUniversalConduit.java:190)
... 45 more
Caused by: org.mule.api.expression.ExpressionRuntimeException: Execution of the expression "xpath3('/soap:Envelope/soap:Body/TriggerCampaignResponse/TriggerCampaignResult').text == '0'" failed.
at org.mule.el.mvel.MVELExpressionLanguage.evaluateInternal(MVELExpressionLanguage.java:202)
at org.mule.el.mvel.MVELExpressionLanguage.evaluate(MVELExpressionLanguage.java:183)
at org.mule.el.mvel.MVELExpressionLanguage.evaluate(MVELExpressionLanguage.java:161)
at org.mule.expression.DefaultExpressionManager.evaluate(DefaultExpressionManager.java:229)
at org.mule.expression.DefaultExpressionManager.evaluateBoolean(DefaultExpressionManager.java:356)
at org.mule.routing.filters.ExpressionFilter.accept(ExpressionFilter.java:123)
at org.mule.routing.MessageFilter.accept(MessageFilter.java:85)
at org.mule.processor.AbstractFilteringMessageProcessor.process(AbstractFilteringMessageProcessor.java:38)
at org.mule.execution.ExceptionToMessagingExceptionExecutionInterceptor.execute(ExceptionToMessagingExceptionExecutionInterceptor.java:24)
... 65 more
Caused by: [Error: null pointer or function not found: xpath3]
[Near : {... xpath3('/soap:Envelope/soap:Bo ....}]
^
[Line: 1, Column: 1]
at org.mule.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.getMethod(ReflectiveAccessorOptimizer.java:1028)
at org.mule.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.getMethod(ReflectiveAccessorOptimizer.java:993)
at org.mule.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(ReflectiveAccessorOptimizer.java:343)
at org.mule.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.optimizeAccessor(ReflectiveAccessorOptimizer.java:140)
at org.mule.mvel2.ast.ASTNode.optimize(ASTNode.java:159)
at org.mule.mvel2.ast.ASTNode.getReducedValueAccelerated(ASTNode.java:115)
at org.mule.mvel2.ast.BinaryOperation.getReducedValueAccelerated(BinaryOperation.java:112)
at org.mule.mvel2.MVELRuntime.execute(MVELRuntime.java:86)
at org.mule.mvel2.compiler.CompiledExpression.getDirectValue(CompiledExpression.java:123)
at org.mule.mvel2.compiler.CompiledExpression.getValue(CompiledExpression.java:119)
at org.mule.mvel2.compiler.CompiledExpression.getValue(CompiledExpression.java:113)
at org.mule.mvel2.MVEL.executeExpression(MVEL.java:943)
at org.mule.el.mvel.MVELExpressionExecutor.execute(MVELExpressionExecutor.java:72)
at org.mule.el.mvel.MVELExpressionLanguage.evaluateInternal(MVELExpressionLanguage.java:198)
... 73 more
2015-05-06 15:56:31 ERROR CatchMessagingExceptionStrategy:337 -
********************************************************************************
Message : Execution of the expression "xpath3('/soap:Envelope/soap:Body/TriggerCampaignResponse/TriggerCampaignResult').text == '0'" failed. (org.mule.api.expression.ExpressionRuntimeException). Message payload is of type: String
Code : MULE_ERROR--2
--------------------------------------------------------------------------------
Exception stack is:
1. [Error: null pointer or function not found: xpath3]
[Near : {... xpath3('/soap:Envelope/soap:Bo ....}]
^
[Line: 1, Column: 1] (org.mule.mvel2.PropertyAccessException)
org.mule.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer:1028 (http://www.mulesoft.org/docs/site/current3/apidocs/org/mule/mvel2/PropertyAccessException.html)
2. Execution of the expression "xpath3('/soap:Envelope/soap:Body/TriggerCampaignResponse/TriggerCampaignResult').text == '0'" failed. (org.mule.api.expression.ExpressionRuntimeException)
org.mule.el.mvel.MVELExpressionLanguage:202 (http://www.mulesoft.org/docs/site/current3/apidocs/org/mule/api/expression/ExpressionRuntimeException.html)
3. Execution of the expression "xpath3('/soap:Envelope/soap:Body/TriggerCampaignResponse/TriggerCampaignResult').text == '0'" failed. (org.mule.api.expression.ExpressionRuntimeException). Message payload is of type: String (org.mule.api.MessagingException)
org.mule.execution.ExceptionToMessagingExceptionExecutionInterceptor:32 (http://www.mulesoft.org/docs/site/current3/apidocs/org/mule/api/MessagingException.html)
--------------------------------------------------------------------------------
Root Exception stack trace:
[Error: null pointer or function not found: xpath3]
[Near : {... xpath3('/soap:Envelope/soap:Bo ....}]
^
[Line: 1, Column: 1]
at org.mule.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.getMethod(ReflectiveAccessorOptimizer.java:1028)
at org.mule.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.getMethod(ReflectiveAccessorOptimizer.java:993)
at org.mule.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(ReflectiveAccessorOptimizer.java:343)
+ 3 more (set debug level logging or '-Dmule.verbose.exceptions=true' for everything)
********************************************************************************
根据Mule documentation字符串输入应该没问题。
有什么想法吗？
由于
答案 0 :(得分：0)
错误的根本原因是：
Error: null pointer or function not found: xpath3
所以它与有效载荷完全无关，而是与Mule无法将xpath3识别为有效函数的事实有关。
XPal 3已添加到Mule 3.6.0中，因此请确保在此版本的运行时上运行应用程序。
答案 1 :(得分：0)
如David所述，根本原因将是xpath3表示法。
将xpath3更改为xpath后，确保必须在流程中将空间管理器命名为＆＃34; soap＆＃34;和targeturi因此。
答案 2 :(得分：0)
您可以在debug中运行该应用程序并检查xpath表达式。
并且还观察到你仍然在表达式中使用xpath3。