RelayUtils Error while building Passthrough stream-error in wso2esb - wso2

Question

I'm using wso2esb 4.7.0 and wso2dss 3.0.0..I have written a query in wso2dss.It's working fine in dss. also but when i wish to work with wso2esb in sequence mediator it shows error as above
ERROR - RelayUtils Error while building Passthrough stream
org.apache.axiom.om.OMException: com.ctc.wstx.exc.WstxEOFException: Unexpected EOF in prolog
at [row,col {unknown-source}]: [1,0]
at org.apache.axiom.om.impl.builder.StAXOMBuilder.next(StAXOMBuilder.java:296)
at org.apache.axiom.soap.impl.builder.StAXSOAPModelBuilder.getSOAPEnvelope(StAXSOAPModelBuilder.java:204)
at org.apache.axiom.soap.impl.builder.StAXSOAPModelBuilder.<init>(StAXSOAPModelBuilder.java:154)
at org.apache.axiom.om.impl.AbstractOMMetaFactory.createStAXSOAPModelBuilder(AbstractOMMetaFactory.java:73)
at org.apache.axiom.om.impl.AbstractOMMetaFactory.createSOAPModelBuilder(AbstractOMMetaFactory.java:79)
at org.apache.axiom.om.OMXMLBuilderFactory.createSOAPModelBuilder(OMXMLBuilderFactory.java:196)
at org.apache.axis2.builder.SOAPBuilder.processDocument(SOAPBuilder.java:55)
at org.apache.synapse.transport.passthru.util.DeferredMessageBuilder.getDocument(DeferredMessageBuilder.java:118)
at org.apache.synapse.transport.passthru.util.RelayUtils.builldMessage(RelayUtils.java:116)
at org.apache.synapse.transport.passthru.util.RelayUtils.buildMessage(RelayUtils.java:91)
at org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:62)
at org.apache.synapse.mediators.base.SequenceMediator.mediate(SequenceMediator.java:114)
at org.apache.synapse.core.axis2.Axis2SynapseEnvironment.injectMessage(Axis2SynapseEnvironment.java:232)
at org.apache.synapse.core.axis2.SynapseCallbackReceiver.handleMessage(SynapseCallbackReceiver.java:443)
at org.apache.synapse.core.axis2.SynapseCallbackReceiver.receive(SynapseCallbackReceiver.java:166)
at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:180)
at org.apache.synapse.transport.passthru.ClientWorker.run(ClientWorker.java:222)
at org.apache.axis2.transport.base.threads.NativeWorkerPool$1.run(NativeWorkerPool.java:172)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1146)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:679)
Caused by: com.ctc.wstx.exc.WstxEOFException: Unexpected EOF in prolog
at [row,col {unknown-source}]: [1,0]
at com.ctc.wstx.sr.StreamScanner.throwUnexpectedEOF(StreamScanner.java:677)
at com.ctc.wstx.sr.BasicStreamReader.handleEOF(BasicStreamReader.java:2116)
at com.ctc.wstx.sr.BasicStreamReader.nextFromProlog(BasicStreamReader.java:2022)
at com.ctc.wstx.sr.BasicStreamReader.next(BasicStreamReader.java:1114)
at org.apache.axiom.util.stax.wrapper.XMLStreamReaderWrapper.next(XMLStreamReaderWrapper.java:225)
at org.apache.axiom.util.stax.dialect.DisallowDoctypeDeclStreamReaderWrapper.next(DisallowDoctypeDeclStreamReaderWrapper.java:34)
at org.apache.axiom.util.stax.wrapper.XMLStreamReaderWrapper.next(XMLStreamReaderWrapper.java:225)
at org.apache.axiom.om.impl.builder.StAXOMBuilder.parserNext(StAXOMBuilder.java:681)
at org.apache.axiom.om.impl.builder.StAXOMBuilder.next(StAXOMBuilder.java:214)
... 20 more
.
.
My proxy service is :
<inSequence>
<property name="messageType" value="application/json" scope="axis2"/>
<property name="username"
expression="//username/text()"
scope="default"
type="STRING"/>
<property name="userid"
expression="//userid/text()"
scope="default"
type="STRING"/>
<log>
<property name="username" expression="get-property('username')"/>
<property name="userid" expression="get-property('userid')"/>
</log>
<payloadFactory media-type="xml">
<format>
<p:trail_op xmlns:p="http://ws.wso2.org/dataservice">
<p:username>$1</p:username>
<p:userid>$2</p:userid>
</p:trail_op>
</format>
<args>
<arg evaluator="xml" expression="get-property('username')"/>
<arg evaluator="xml" expression="get-property('userid')"/>
</args>
</payloadFactory>
<header name="Action" value=""/>
<property name="SOAPAction" value="" scope="transport"/>
<send receive="Capp_Login_seq1">
<endpoint>
<address uri="http://192.168.1.23:9764/services/Capp_muser_dataservice/"
format="soap12"/>
</endpoint>
</send>
<log level="full"/>
</inSequence>
<outSequence>
<send/>
</outSequence>
and sequence is:
<sequence xmlns="http://ws.apache.org/ns/synapse" name="Capp_Login_seq1">
<property name="messageType" value="application/json" scope="axis2"/>
<property xmlns:ns="http://org.apache.synapse/xsd" xmlns:s="http://ws.wso2.org/dataservice" name="userid" expression="get-property('userid')" scope="default" type="STRING"/>
<log>
<property xmlns:ns="http://org.apache.synapse/xsd" name="userid" expression="get-property('userid')"/>
</log>
<send/>
</sequence>
I'm sending request like:
curl -v -H "Accept:application/json" -H "Content-Type:application/json" -d '{"username":"Harry","userid":"347367127872701992"}' http://youtility-desktop:8282/services/Capp_LoginProxy
How should i fix the error? Please let me know..

Answer 1

I got the same issue in ESB 5 and DAS 3. It could get fixed by adding relevant messageFormatters and messageBuilders in axis2.xml located in esb/repository/conf/axis2.xml
In my scenario, these two entries were added to axis2.xml
messageFormatter contentType="text/html"
class="org.wso2.carbon.relay.ExpandingMessageFormatter"/>
messageBuilder contentType="text/html" class="org.wso2.carbon.relay.BinaryRelayBuilder"/>