org.mule.api.transformer.TransformerException：为变压器"JAXBMarshallerTransformer"指定了无效的返回类型"class [B"

Question

我正在使用Mule中的CXF组件来消费网络服务。我在使用 Mule 3.8 时收到以下错误

Message               : An invalid return type "class [B" was specified for transformer "JAXBMarshallerTransformer"
Transformer           : JAXBMarshallerTransformer{this=52baa6b2, name='JAXBMarshallerTransformer', ignoreBadInput=false, returnClass=SimpleDataType{type=[B, mimeType='*/*', encoding='null'}, sourceTypes=[SimpleDataType{type=java.lang.Object, mimeType='*/*', encoding='null'}]}
Root Exception stack trace:
org.mule.api.transformer.TransformerException: An invalid return type "class [B" was specified for transformer "JAXBMarshallerTransformer"

尝试了多个选项，添加了不同的变压器作为响应; 没有任何效果！我的流程终于看起来像这样了：

<http:listener-config name="HTTP_Listener_Configuration" host="localhost" port="8081" basePath="/mule" doc:name="HTTP Listener Configuration"/>
<cxf:configuration name="CXF_Configuration" enableMuleSoapHeaders="false" initializeStaticBusInstance="false" doc:name="CXF Configuration"/>
<spring:beans>
<spring:bean name="StringToDocumentXfm" class="invoke.StringToDocumentTransformer"/>
</spring:beans>
<mulexml:jaxb-context name="JAXB_Context" packageNames="EmployeeSOAClient" doc:name="JAXB Context"/>
<flow name="mule-testproj-soapclientFlow">
<http:listener config-ref="HTTP_Listener_Configuration" path="/sample" doc:name="HTTP" allowedMethods="GET"/>
<set-payload value="#[message.inboundProperties.'http.query.params'.empno]" doc:name="Set Payload"/>
<cxf:jaxws-client operation="getEmployeeDetails" clientClass="EmployeeSOAClient.EmployeeService" port="EmployeePort" wsdlLocation="classpath:Employee.wsdl" doc:name="CXF">
<cxf:aegis-databinding/>
</cxf:jaxws-client>
<outbound-endpoint address="http://localhost:8080/EmployeeSOA/services/Employee" doc:name="Generic" exchange-pattern="request-response"/>
<response>
<object-to-string-transformer doc:name="Object to String"/>
<logger message="#[payload]" level="INFO" doc:name="Logger"/>
<invoke name="Invoke" object-ref="StringToDocumentXfm" method="covertStringToDocument" methodArguments="#[payload]" methodArgumentTypes="java.lang.String"/>
<mulexml:dom-to-xml-transformer doc:name="DOM to XML"/>
<logger message="Output after DOM to XML: #[payload]" level="INFO" doc:name="Logger"/>
</response>
</flow>

我错过了什么？

谢谢 阿尼什。

Answer 1

JAXBMarshallerTransformer 不知道如何转换为字节数组("class [B"(。尝试将返回类设置为 java.lang.String