Hi, I am seeing an error in ESB 5.0.0 when making SOAP to JSON conversion via a proxy service. When I invoke the proxy using following curl command the operation was successful, but I could see some errors logged in the console.
When I search for the error, I found a solution given in [1]. When I try it, the error got resolved. But still, I am getting a SOAP payload as the response message. Here is my proxy service. <?xml version="1.0" encoding="UTF-8"?> <proxy xmlns="http://ws.apache.org/ns/synapse"; name="newproxy1.2" startOnLoad="true" statistics="disable" trace="disable" transports="http,https"> <target> <inSequence> <header name="Authorization" scope="transport" value="Basic cGlyaXlhOnBpcml5YTEyMw=="/> <log> <property expression="$axis2:HTTP_METHOD" name="httpmethod === "/> </log> <switch source="$axis2:HTTP_METHOD"> <case regex="^(.*(GET)).*$"> <payloadFactory media-type="xml"> <format> <soapenv:Envelope xmlns:soapenv=" http://schemas.xmlsoap.org/soap/envelope/"; xmlns:ser=" http://service.sample.ninewells.com";> <soapenv:Header> <abc>2611</abc> </soapenv:Header> <soapenv:Body> <ser:readNinewells> <ser:patientId>$1</ser:patientId> </ser:readNinewells> </soapenv:Body> </soapenv:Envelope> </format> <args> <arg xmlns:ns="http://org.apache.synapse/xsd"; evaluator="xml" expression="$url:patientId"/> </args> </payloadFactory> <property name="SOAPAction" scope="transport" type="STRING" value="urn:readNinewells"/> <header name="Action" scope="default" value="urn:readNinewells"/> <property name="messageType" scope="axis2" type="STRING" value="application/xml"/> <send> <endpoint> <address format="soap11" uri="https:// <IP>:<PORT>/services/NinewellsPatientService"/> </endpoint> </send> </case> <case regex="^(.*(DELETE)).*$"> <payloadFactory media-type="xml"> <format> <soapenv:Envelope xmlns:soapenv=" http://schemas.xmlsoap.org/soap/envelope/"; xmlns:ser=" http://service.sample.ninewells.com";> <soapenv:Header> <abc>2611</abc> </soapenv:Header> <soapenv:Body> <ser:deleteNinewells> <ser:patientId>$1</ser:patientId> </ser:deleteNinewells> </soapenv:Body> </soapenv:Envelope> </format> <args> <arg xmlns:ns="http://org.apache.synapse/xsd"; evaluator="xml" expression="$url:patientId"/> </args> </payloadFactory> <property name="SOAPAction" scope="transport" type="STRING" value="urn:deleteNinewells"/> <header name="Action" scope="default" value="urn:deleteNinewells"/> <property name="messageType" scope="axis2" type="STRING" value="application/xml"/> <send> <endpoint> <address format="soap11" uri="https:// <IP>:<PORT>/services/NinewellsPatientService"/> </endpoint> </send> </case> <default/> </switch> </inSequence> <outSequence> <property name="messageType" scope="axis2" type="STRING" value="application/json"/> <send/> </outSequence> </target> <description/> </proxy> My curl command is curl -X DELETE http://piriya-ThinkPad-X1-Carbon-5th:8284/services/newproxy1.2?patientId=1031 The exception in the console is: ERROR - JsonUtil #writeAsJson. Payload could not be written as JSON. MessageID: urn:uuid:752a8cd2-03a7-4564-8645-7652db5c8666 [2017-11-17 10:06:30,700] ERROR - PassThroughHttpSender Failed to submit the response org.apache.axis2.AxisFault: Payload could not be written as JSON. at org.apache.synapse.commons.json.JsonUtil.writeAsJson(JsonUtil.java:264) at org.apache.synapse.commons.json.JsonStreamFormatter.writeTo(JsonStreamFormatter.java:61) at org.apache.synapse.transport.passthru.PassThroughHttpSender.submitResponse(PassThroughHttpSender.java:566) at org.apache.synapse.transport.passthru.PassThroughHttpSender.invoke(PassThroughHttpSender.java:264) at org.apache.axis2.engine.AxisEngine.send(AxisEngine.java:442) at org.apache.synapse.core.axis2.Axis2Sender.sendBack(Axis2Sender.java:222) at org.apache.synapse.core.axis2.Axis2SynapseEnvironment.send(Axis2SynapseEnvironment.java:531) at org.apache.synapse.mediators.builtin.SendMediator.mediate(SendMediator.java:118) at org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:97) at org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:59) at org.apache.synapse.mediators.base.SequenceMediator.mediate(SequenceMediator.java:158) at org.apache.synapse.core.axis2.Axis2SynapseEnvironment.injectMessage(Axis2SynapseEnvironment.java:337) at org.apache.synapse.core.axis2.SynapseCallbackReceiver.handleMessage(SynapseCallbackReceiver.java:560) at org.apache.synapse.core.axis2.SynapseCallbackReceiver.receive(SynapseCallbackReceiver.java:194) at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:180) at org.apache.synapse.transport.passthru.ClientWorker.run(ClientWorker.java:260) at org.apache.axis2.transport.base.threads.NativeWorkerPool$1.run(NativeWorkerPool.java:172) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:748) [2017-11-17 10:06:30,702] ERROR - Axis2Sender Content-Type:application/json,<?xml version='1.0' encoding='utf-8'?><soapenv:Envelope xmlns:soapenv=" http://schemas.xmlsoap.org/soap/envelope/";><soapenv:Body/></soapenv:Envelope> Unexpected error sending message back org.apache.axis2.AxisFault: Failed to submit the response at org.apache.synapse.transport.passthru.PassThroughHttpSender.handleException(PassThroughHttpSender.java:624) at org.apache.synapse.transport.passthru.PassThroughHttpSender.invoke(PassThroughHttpSender.java:266) at org.apache.axis2.engine.AxisEngine.send(AxisEngine.java:442) at org.apache.synapse.core.axis2.Axis2Sender.sendBack(Axis2Sender.java:222) at org.apache.synapse.core.axis2.Axis2SynapseEnvironment.send(Axis2SynapseEnvironment.java:531) at org.apache.synapse.mediators.builtin.SendMediator.mediate(SendMediator.java:118) at org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:97) at org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:59) at org.apache.synapse.mediators.base.SequenceMediator.mediate(SequenceMediator.java:158) at org.apache.synapse.core.axis2.Axis2SynapseEnvironment.injectMessage(Axis2SynapseEnvironment.java:337) at org.apache.synapse.core.axis2.SynapseCallbackReceiver.handleMessage(SynapseCallbackReceiver.java:560) at org.apache.synapse.core.axis2.SynapseCallbackReceiver.receive(SynapseCallbackReceiver.java:194) at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:180) at org.apache.synapse.transport.passthru.ClientWorker.run(ClientWorker.java:260) at org.apache.axis2.transport.base.threads.NativeWorkerPool$1.run(NativeWorkerPool.java:172) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:748) Caused by: org.apache.axis2.AxisFault: Payload could not be written as JSON. at org.apache.synapse.commons.json.JsonUtil.writeAsJson(JsonUtil.java:264) at org.apache.synapse.commons.json.JsonStreamFormatter.writeTo(JsonStreamFormatter.java:61) at org.apache.synapse.transport.passthru.PassThroughHttpSender.submitResponse(PassThroughHttpSender.java:566) at org.apache.synapse.transport.passthru.PassThroughHttpSender.invoke(PassThroughHttpSender.java:264) [1] [Dev] [ESB] JSON to SOAP conversion issue Could you please suggest how I can overcome this issue or correct me if I am wrong? Thanks, Piriya -- Regards, *Piriya Sivalingam* *Software Engineer - Support Team* *WSO2* *Mobile : +94 77 8462039* [image: http://wso2.com/signature] <http://wso2.com/signature>
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