May be this error is valid.
When the media type of the payload factory is set to XML it is expecting an
XML block inside the format tag. A non XML string would be invalid for an
XML type payload.
If the requirement is to generated a plain text payload, the backend
endpoint might be expecting text/plain. If so the following would work:
<payloadFactory media-type="xml">
<format>
<ms11:text xmlns:ms11="
http://ws.apache.org/commons/ns/payload";>$1</ms11:text>
</format>
<args>
<arg value="Sample text"></arg>
</args>
</payloadFactory>
<property name="messageType" value="text/plain"
scope="axis2"></property>
If the requirement is to generate an XML payload on a condition and a JSON
on the other may be two different payload factories could be used with a
filter. WDYT?
On Mon, Jan 27, 2014 at 1:14 AM, Subash Chaturanga <sub...@wso2.com> wrote:
> Hi,
> My scenario is as follows. Following is not possible and cannot save . And
> I have added the exception thrown. For the media type "json" I could save
> the api.
>
> <payloadFactory media-type="xml">
> <format>$1</format>
> <args>
> <arg evaluator="xml"
> expression="$body/root:rootelement/child::out/child::*"></arg>
> </args>
> </payloadFactory>
>
>
> Following is the error. But if I add <format><root>$1<root></format> then
> it works fine and output is embedded inside "root". But If I do not want a
> such dummy "root" element to be part of my response. Any idea to sort this
> out ? Is it a bug ?
>
>
> [2014-01-27 11:30:36,318] ERROR - RPCMessageReceiver Exception occurred
> while trying to invoke service method updateApiFromString
> java.lang.reflect.InvocationTargetException
> at sun.reflect.GeneratedMethodAccessor59.invoke(Unknown Source)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at
> org.apache.axis2.rpc.receivers.RPCUtil.invokeServiceClass(RPCUtil.java:212)
> at
> org.apache.axis2.rpc.receivers.RPCMessageReceiver.invokeBusinessLogic(RPCMessageReceiver.java:117)
> at
> org.apache.axis2.receivers.AbstractInOutMessageReceiver.invokeBusinessLogic(AbstractInOutMessageReceiver.java:40)
> at
> org.apache.axis2.receivers.AbstractMessageReceiver.receive(AbstractMessageReceiver.java:110)
> at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:180)
> at
> org.apache.axis2.transport.local.LocalTransportReceiver.processMessage(LocalTransportReceiver.java:169)
> at
> org.apache.axis2.transport.local.LocalTransportReceiver.processMessage(LocalTransportReceiver.java:82)
> at
> org.wso2.carbon.core.transports.local.CarbonLocalTransportSender.finalizeSendWithToAddress(CarbonLocalTransportSender.java:45)
> at
> org.apache.axis2.transport.local.LocalTransportSender.invoke(LocalTransportSender.java:77)
> at org.apache.axis2.engine.AxisEngine.send(AxisEngine.java:442)
> at
> org.apache.axis2.description.OutInAxisOperationClient.send(OutInAxisOperation.java:398)
> at
> org.apache.axis2.description.OutInAxisOperationClient.executeImpl(OutInAxisOperation.java:224)
> at
> org.apache.axis2.client.OperationClient.execute(OperationClient.java:149)
> at
> org.wso2.carbon.rest.api.stub.RestApiAdminStub.updateApiFromString(RestApiAdminStub.java:3386)
> at
> org.wso2.carbon.rest.api.ui.client.RestApiAdminClient.updateApiFromString(RestApiAdminClient.java:230)
> at
> org.apache.jsp.api.savesource_002dajaxprocessor_jsp._jspService(org.apache.jsp.api.savesource_002dajaxprocessor_jsp:133)
> at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:111)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
> at
> org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:403)
> at
> org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:492)
> at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:378)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
> at org.wso2.carbon.ui.JspServlet.service(JspServlet.java:155)
> at org.wso2.carbon.ui.TilesJspServlet.service(TilesJspServlet.java:80)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
> at
> org.eclipse.equinox.http.helper.ContextPathServletAdaptor.service(ContextPathServletAdaptor.java:37)
> at
> org.eclipse.equinox.http.servlet.internal.ServletRegistration.service(ServletRegistration.java:61)
> at
> org.eclipse.equinox.http.servlet.internal.ProxyServlet.processAlias(ProxyServlet.java:128)
> at
> org.eclipse.equinox.http.servlet.internal.ProxyServlet.service(ProxyServlet.java:68)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
> at
> org.wso2.carbon.tomcat.ext.servlet.DelegationServlet.service(DelegationServlet.java:68)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
> at
> org.wso2.carbon.tomcat.ext.filter.CharacterSetFilter.doFilter(CharacterSetFilter.java:61)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
> at
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
> at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
> at
> org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
> at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
> at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
> at
> org.wso2.carbon.tomcat.ext.valves.CompositeValve.continueInvocation(CompositeValve.java:178)
> at
> org.wso2.carbon.tomcat.ext.valves.TomcatValveContainer.invokeValves(TomcatValveContainer.java:49)
> at
> org.wso2.carbon.tomcat.ext.valves.CompositeValve.invoke(CompositeValve.java:141)
> at
> org.wso2.carbon.tomcat.ext.valves.CarbonStuckThreadDetectionValve.invoke(CarbonStuckThreadDetectionValve.java:156)
> at
> org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:936)
> at
> org.wso2.carbon.tomcat.ext.valves.CarbonContextCreatorValve.invoke(CarbonContextCreatorValve.java:52)
> at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
> at
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
> at
> org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1004)
> at
> org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
> at
> org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1653)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)
> at java.lang.Thread.run(Thread.java:662)
> Caused by: java.lang.NullPointerException
> at
> org.apache.synapse.config.xml.PayloadFactoryMediatorFactory.createSpecificMediator(PayloadFactoryMediatorFactory.java:74)
> at
> org.apache.synapse.config.xml.AbstractMediatorFactory.createMediator(AbstractMediatorFactory.java:91)
> at
> org.apache.synapse.config.xml.MediatorFactoryFinder.getMediator(MediatorFactoryFinder.java:223)
> at
> org.apache.synapse.config.xml.AbstractListMediatorFactory.addChildren(AbstractListMediatorFactory.java:41)
> at
> org.apache.synapse.config.xml.SequenceMediatorFactory.createAnonymousSequence(SequenceMediatorFactory.java:70)
> at
> org.apache.synapse.config.xml.AggregateMediatorFactory.createSpecificMediator(AggregateMediatorFactory.java:145)
> at
> org.apache.synapse.config.xml.AbstractMediatorFactory.createMediator(AbstractMediatorFactory.java:91)
> at
> org.apache.synapse.config.xml.MediatorFactoryFinder.getMediator(MediatorFactoryFinder.java:223)
> at
> org.apache.synapse.config.xml.AbstractListMediatorFactory.addChildren(AbstractListMediatorFactory.java:41)
> at
> org.apache.synapse.config.xml.SequenceMediatorFactory.createAnonymousSequence(SequenceMediatorFactory.java:70)
> at
> org.apache.synapse.config.xml.rest.ResourceFactory.configureSequences(ResourceFactory.java:115)
> at
> org.apache.synapse.config.xml.rest.ResourceFactory.createResource(ResourceFactory.java:46)
> at
> org.apache.synapse.config.xml.rest.APIFactory.createAPI(APIFactory.java:81)
> at
> org.wso2.carbon.rest.api.service.RestApiAdmin.updateApiFromString(RestApiAdmin.java:155)
> ... 58 more
> [2014-01-27 11:30:36,321] ERROR - RestApiAdminClient Exception occurred
> while trying to invoke service method updateApiFromString
> org.apache.axis2.AxisFault: Exception occurred while trying to invoke
> service method updateApiFromString
> at
> org.apache.axis2.util.Utils.getInboundFaultFromMessageContext(Utils.java:531)
> at
> org.apache.axis2.description.OutInAxisOperationClient.handleResponse(OutInAxisOperation.java:367)
> at
> org.apache.axis2.description.OutInAxisOperationClient.send(OutInAxisOperation.java:413)
> at
> org.apache.axis2.description.OutInAxisOperationClient.executeImpl(OutInAxisOperation.java:224)
> at
> org.apache.axis2.client.OperationClient.execute(OperationClient.java:149)
> at
> org.wso2.carbon.rest.api.stub.RestApiAdminStub.updateApiFromString(RestApiAdminStub.java:3386)
> at
> org.wso2.carbon.rest.api.ui.client.RestApiAdminClient.updateApiFromString(RestApiAdminClient.java:230)
> at
> org.apache.jsp.api.savesource_002dajaxprocessor_jsp._jspService(org.apache.jsp.api.savesource_002dajaxprocessor_jsp:133)
> at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:111)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
> at
> org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:403)
> at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:492)
> at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:378)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
> at org.wso2.carbon.ui.JspServlet.service(JspServlet.java:155)
> at org.wso2.carbon.ui.TilesJspServlet.service(TilesJspServlet.java:80)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
> at
> org.eclipse.equinox.http.helper.ContextPathServletAdaptor.service(ContextPathServletAdaptor.java:37)
> at
> org.eclipse.equinox.http.servlet.internal.ServletRegistration.service(ServletRegistration.java:61)
> at
> org.eclipse.equinox.http.servlet.internal.ProxyServlet.processAlias(ProxyServlet.java:128)
> at
> org.eclipse.equinox.http.servlet.internal.ProxyServlet.service(ProxyServlet.java:68)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
> at
> org.wso2.carbon.tomcat.ext.servlet.DelegationServlet.service(DelegationServlet.java:68)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
> at
> org.wso2.carbon.tomcat.ext.filter.CharacterSetFilter.doFilter(CharacterSetFilter.java:61)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
> at
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
> at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
> at
> org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
> at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
> at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
> at
> org.wso2.carbon.tomcat.ext.valves.CompositeValve.continueInvocation(CompositeValve.java:178)
> at
> org.wso2.carbon.tomcat.ext.valves.TomcatValveContainer.invokeValves(TomcatValveContainer.java:49)
> at
> org.wso2.carbon.tomcat.ext.valves.CompositeValve.invoke(CompositeValve.java:141)
> at
> org.wso2.carbon.tomcat.ext.valves.CarbonStuckThreadDetectionValve.invoke(CarbonStuckThreadDetectionValve.java:156)
> at
> org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:936)
> at
> org.wso2.carbon.tomcat.ext.valves.CarbonContextCreatorValve.invoke(CarbonContextCreatorValve.java:52)
> at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
> at
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
> at
> org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1004)
> at
> org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
> at
> org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1653)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)
> at java.lang.Thread.run(Thread.java:662)
> [2014-01-27 11:31:55,364] ERROR - RPCMessageReceiver Exception occurred
> while trying to invoke service method updateApiFromString
> java.lang.reflect.InvocationTargetException
> at sun.reflect.GeneratedMethodAccessor59.invoke(Unknown Source)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at
> org.apache.axis2.rpc.receivers.RPCUtil.invokeServiceClass(RPCUtil.java:212)
> at
> org.apache.axis2.rpc.receivers.RPCMessageReceiver.invokeBusinessLogic(RPCMessageReceiver.java:117)
> at
> org.apache.axis2.receivers.AbstractInOutMessageReceiver.invokeBusinessLogic(AbstractInOutMessageReceiver.java:40)
> at
> org.apache.axis2.receivers.AbstractMessageReceiver.receive(AbstractMessageReceiver.java:110)
> at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:180)
> at
> org.apache.axis2.transport.local.LocalTransportReceiver.processMessage(LocalTransportReceiver.java:169)
> at
> org.apache.axis2.transport.local.LocalTransportReceiver.processMessage(LocalTransportReceiver.java:82)
> at
> org.wso2.carbon.core.transports.local.CarbonLocalTransportSender.finalizeSendWithToAddress(CarbonLocalTransportSender.java:45)
> at
> org.apache.axis2.transport.local.LocalTransportSender.invoke(LocalTransportSender.java:77)
> at org.apache.axis2.engine.AxisEngine.send(AxisEngine.java:442)
> at
> org.apache.axis2.description.OutInAxisOperationClient.send(OutInAxisOperation.java:398)
> at
> org.apache.axis2.description.OutInAxisOperationClient.executeImpl(OutInAxisOperation.java:224)
> at
> org.apache.axis2.client.OperationClient.execute(OperationClient.java:149)
> at
> org.wso2.carbon.rest.api.stub.RestApiAdminStub.updateApiFromString(RestApiAdminStub.java:3386)
> at
> org.wso2.carbon.rest.api.ui.client.RestApiAdminClient.updateApiFromString(RestApiAdminClient.java:230)
> at
> org.apache.jsp.api.savesource_002dajaxprocessor_jsp._jspService(org.apache.jsp.api.savesource_002dajaxprocessor_jsp:133)
> at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:111)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
> at
> org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:403)
> at
> org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:492)
> at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:378)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
> at org.wso2.carbon.ui.JspServlet.service(JspServlet.java:155)
> at org.wso2.carbon.ui.TilesJspServlet.service(TilesJspServlet.java:80)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
> at
> org.eclipse.equinox.http.helper.ContextPathServletAdaptor.service(ContextPathServletAdaptor.java:37)
> at
> org.eclipse.equinox.http.servlet.internal.ServletRegistration.service(ServletRegistration.java:61)
> at
> org.eclipse.equinox.http.servlet.internal.ProxyServlet.processAlias(ProxyServlet.java:128)
> at
> org.eclipse.equinox.http.servlet.internal.ProxyServlet.service(ProxyServlet.java:68)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
> at
> org.wso2.carbon.tomcat.ext.servlet.DelegationServlet.service(DelegationServlet.java:68)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
> at
> org.wso2.carbon.tomcat.ext.filter.CharacterSetFilter.doFilter(CharacterSetFilter.java:61)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
> at
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
> at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
> at
> org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
> at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
> at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
> at
> org.wso2.carbon.tomcat.ext.valves.CompositeValve.continueInvocation(CompositeValve.java:178)
> at
> org.wso2.carbon.tomcat.ext.valves.TomcatValveContainer.invokeValves(TomcatValveContainer.java:49)
> at
> org.wso2.carbon.tomcat.ext.valves.CompositeValve.invoke(CompositeValve.java:141)
> at
> org.wso2.carbon.tomcat.ext.valves.CarbonStuckThreadDetectionValve.invoke(CarbonStuckThreadDetectionValve.java:156)
> at
> org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:936)
> at
> org.wso2.carbon.tomcat.ext.valves.CarbonContextCreatorValve.invoke(CarbonContextCreatorValve.java:52)
> at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
> at
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
> at
> org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1004)
> at
> org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
> at
> org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1653)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)
> at java.lang.Thread.run(Thread.java:662)
> Caused by: java.lang.NullPointerException
> at
> org.apache.synapse.config.xml.PayloadFactoryMediatorFactory.createSpecificMediator(PayloadFactoryMediatorFactory.java:74)
> at
> org.apache.synapse.config.xml.AbstractMediatorFactory.createMediator(AbstractMediatorFactory.java:91)
> at
> org.apache.synapse.config.xml.MediatorFactoryFinder.getMediator(MediatorFactoryFinder.java:223)
> at org.apac
>
>
>
> --
> Thanks
> /subash
>
> *Subash Chaturanga*
> Senior Software Engineer :Integration TG; WSO2 Inc. http://wso2.com
>
> email: sub...@wso2.com
> blog: http://subashsdm.blogspot.com/
> twitter: @subash89
> phone: +9477 2225922
> Lean . Enterprise . Middleware
>
> _______________________________________________
> Dev mailing list
> Dev@wso2.org
> http://wso2.org/cgi-bin/mailman/listinfo/dev
>
>
--
*Imesh Gunaratne*
Technical Lead
WSO2 Inc: http://wso2.com
T: +94 11 214 5345 M: +94 77 374 2057
W: http://imesh.gunaratne.org
Lean . Enterprise . Middleware
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