topic Re: [resolved] Error with ESB Service (Unexpected EOF in prolog) in Talend Studio

[resolved] Error with ESB Service (Unexpected EOF in prolog)

Anonymous — Sat, 16 Nov 2024 12:13:06 GMT

I have a simple webservice created with Talend ESB, which receives a request, then reads an xml file and outputs 1..n rows to the response.
The service starts up normally, but when I call it, I get the error "org.apache.cxf.interceptor.Fault: Could not generate the XML stream caused by: com.ctc.wstx.exc.WstxEOFException: Unexpected EOF in prolog
at : ."
Can anyone help me with this? I don't understand the error message enough to even try anything to solve it.
Full exception:
elo 21, 2012 11:12:02 AP. org.apache.cxf.phase.PhaseInterceptorChain doDefaultLogging
WARNING: Interceptor for {http://www.talend.org/service/}CurrentPriceLists#{http://www.talend.org/service/}CurrentPriceListsOperation has thrown exception, unwinding now
org.apache.cxf.interceptor.Fault: Could not generate the XML stream caused by: com.ctc.wstx.exc.WstxEOFException: Unexpected EOF in prolog
at : .
at org.apache.cxf.databinding.source.XMLStreamDataWriter.write(XMLStreamDataWriter.java:73)
at org.apache.cxf.databinding.source.XMLStreamDataWriter.write(XMLStreamDataWriter.java:50)
at org.apache.cxf.databinding.source.XMLStreamDataWriter.write(XMLStreamDataWriter.java:46)
at org.apache.cxf.interceptor.AbstractOutDatabindingInterceptor.writeParts(AbstractOutDatabindingInterceptor.java:119)
at org.apache.cxf.interceptor.BareOutInterceptor.handleMessage(BareOutInterceptor.java:68)
at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:262)
at org.apache.cxf.interceptor.OutgoingChainInterceptor.handleMessage(OutgoingChainInterceptor.java:77)
at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:262)
at org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:122)
at org.apache.cxf.transport.http_jetty.JettyHTTPDestination.serviceRequest(JettyHTTPDestination.java:344)
at org.apache.cxf.transport.http_jetty.JettyHTTPDestination.doService(JettyHTTPDestination.java:310)
at org.apache.cxf.transport.http_jetty.JettyHTTPHandler.handle(JettyHTTPHandler.java:72)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:943)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:879)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)
at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:250)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:110)
at org.eclipse.jetty.server.Server.handle(Server.java:345)
at org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:441)
at org.eclipse.jetty.server.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:919)
at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:588)
at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:218)
at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:51)
at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:586)
at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:44)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:598)
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:533)
at java.lang.Thread.run(Unknown Source)
Caused by: com.ctc.wstx.exc.WstxEOFException: Unexpected EOF in prolog
at :
at com.ctc.wstx.sr.StreamScanner.throwUnexpectedEOF(StreamScanner.java:677)
at com.ctc.wstx.sr.BasicStreamReader.handleEOF(BasicStreamReader.java:2119)
at com.ctc.wstx.sr.BasicStreamReader.nextFromProlog(BasicStreamReader.java:2025)
at com.ctc.wstx.sr.BasicStreamReader.next(BasicStreamReader.java:1117)
at org.apache.cxf.staxutils.StaxUtils.copy(StaxUtils.java:568)
at org.apache.cxf.staxutils.StaxUtils.copy(StaxUtils.java:527)
at org.apache.cxf.staxutils.StaxUtils.copy(StaxUtils.java:481)
at org.apache.cxf.databinding.source.XMLStreamDataWriter.write(XMLStreamDataWriter.java:70)
... 27 more

Re: [resolved] Error with ESB Service (Unexpected EOF in prolog)

Anonymous — Tue, 21 Aug 2012 10:37:43 GMT

Hi,
this error occurs if there's no output for the web service. As you see - the subjob was not invoked (there is no statistic info on the routes), so no data flowed to the tESBResponse.
For web services - I believe you still have to keep everything in one subjob. you can trigger further processing by "onComponentOk" or iterate links.
Have fun
Gabriel

Re: [resolved] Error with ESB Service (Unexpected EOF in prolog)

Anonymous — Tue, 21 Aug 2012 12:12:30 GMT

Hi gusto2,
Thank you, changing the job to use "iterate" link from request instead of "on subjob ok" solved the issue.

Re: [resolved] Error with ESB Service (Unexpected EOF in prolog)

Anonymous — Fri, 07 Dec 2012 12:49:30 GMT

Hi Gabriel,
you wrote "this error occurs if there's no output for the web service."
As you can see in the images I have output for the web service, but the error occurs.
Can anyone help me ?

Rebecca

Re: [resolved] Error with ESB Service (Unexpected EOF in prolog)

Anonymous — Sun, 09 Dec 2012 22:23:47 GMT

is there some reason you need the log output from tXMLmap? The outputs from tXMLmap should be tied to some tESBresponse or tESBfault and I htink there should only be one path triggered.

Re: [resolved] Error with ESB Service (Unexpected EOF in prolog)

Anonymous — Mon, 10 Dec 2012 07:13:30 GMT

There is no reason for the log output. It's only there, to see what the txmlMap produces.
If I start the job without the log output, I get the same error.

Re: [resolved] Error with ESB Service (Unexpected EOF in prolog)

Anonymous — Mon, 10 Dec 2012 12:47:02 GMT

Rebecca,
as eoast wrote, try to create only one output flow
... -> tXMLMap -> tLogRow -> tESBResponse
to see the real output. The WS flow needs to be on one transaction and I don't know how multiple outputs affects this feature
Gabriel

Re: [resolved] Error with ESB Service (Unexpected EOF in prolog)

Anonymous — Tue, 11 Dec 2012 07:35:06 GMT

Gabriel,
as I wrote in my last reply, I have the same error without the complete tLogRow, but I test your suggestion.
You can see the result in the images. I have the same error, but the output of the tLogRow ("Beijing") is OK.

Rebecca