tExtractJsonFields error when restclient result array size is 0

[Anonymous]

hi all:

 here is my design to get restult from rest api:

the patern of the restclient url is :

http://services.groupkt.com/state/search/{countryCode}?text={text to search}

the url is set is :

"http://services.groupkt.com/state/search/"+req.countryCode+"?text="+req.searchText

 

when i call with parameter

<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ser="http://www.talend.org/service/">
   <soapenv:Header/>
   <soapenv:Body>
      <ser:CountrySearchWebServiceOperationRequest>
         <countryCode>IND</countryCode>
         <searchText>pradesh</searchText>
      </ser:CountrySearchWebServiceOperationRequest>
   </soapenv:Body>
</soapenv:Envelope>

the rest client URL should be:

http://services.groupkt.com/state/search/IND?text=pradesh

the json result should be:

{
  "RestResponse" : {
    "messages" : [ "Total [5] records found." ],
    "result" : [ {
      "id" : 69,
      "country" : "IND",
      "name" : "Madhya Pradesh",
      "abbr" : "MP",
      "area" : "72626809SKM",
      "largest_city" : "Bhopal",
      "capital" : "Bhopal"
    }, {
      "id" : 82,
      "country" : "IND",
      "name" : "Uttar Pradesh",
      "abbr" : "UP",
      "area" : "199812341SKM",
      "largest_city" : "Lucknow",
      "capital" : "Lucknow"
    }]
  }
}

the result is OK :

but when the paramter is changed, and the json "result" value is blank, the service throw an exception:

the parameter:

the rest client URL should be:

http://services.groupkt.com/state/search/IND?text=pradesh3

the result of the api is:

{
  "RestResponse" : {
    "messages" : [ "No matching state found for requested code [IND->pradesh3]." ],
    "result" : [ ]
  }
}

the talend studio print the error:

[WARN ]: org.apache.cxf.phase.PhaseInterceptorChain - Interceptor for {http://www.talend.org/service/}CountrySearchWebService#{http://www.talend.org/service/}CountrySearchWebServiceOperation 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 [row,col {unknown-source}]: [2,0].
	at org.apache.cxf.databinding.source.XMLStreamDataWriter.write(XMLStreamDataWriter.java:115)
	at org.apache.cxf.databinding.source.XMLStreamDataWriter.write(XMLStreamDataWriter.java:65)
	at org.apache.cxf.databinding.source.XMLStreamDataWriter.write(XMLStreamDataWriter.java:53)
	at org.apache.cxf.interceptor.AbstractOutDatabindingInterceptor.writeParts(AbstractOutDatabindingInterceptor.java:137)
	at org.apache.cxf.wsdl.interceptors.BareOutInterceptor.handleMessage(BareOutInterceptor.java:68)
	at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:308)
	at org.apache.cxf.interceptor.OutgoingChainInterceptor.handleMessage(OutgoingChainInterceptor.java:90)
	at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:308)
	at org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:121)
	at org.apache.cxf.transport.http.AbstractHTTPDestination.invoke(AbstractHTTPDestination.java:267)
	at org.apache.cxf.transport.http_jetty.JettyHTTPDestination.doService(JettyHTTPDestination.java:247)
	at org.apache.cxf.transport.http_jetty.JettyHTTPHandler.handle(JettyHTTPHandler.java:79)
	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1182)
	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1116)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
	at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:213)
	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:134)
	at org.eclipse.jetty.server.Server.handle(Server.java:534)
	at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:320)
	at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:251)
	at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:273)
	at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:95)
	at org.eclipse.jetty.io.SelectChannelEndPoint$2.run(SelectChannelEndPoint.java:93)
	at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.executeProduceConsume(ExecuteProduceConsume.java:303)
	at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceConsume(ExecuteProduceConsume.java:148)
	at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:136)
	at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:671)
	at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:589)
	at java.lang.Thread.run(Unknown Source)
Caused by: com.ctc.wstx.exc.WstxEOFException: Unexpected EOF in prolog
 at [row,col {unknown-source}]: [2,0]
	at com.ctc.wstx.sr.StreamScanner.throwUnexpectedEOF(StreamScanner.java:685)
	at com.ctc.wstx.sr.BasicStreamReader.handleEOF(BasicStreamReader.java:2141)
	at com.ctc.wstx.sr.BasicStreamReader.nextFromProlog(BasicStreamReader.java:2047)
	at com.ctc.wstx.sr.BasicStreamReader.next(BasicStreamReader.java:1131)
	at org.apache.cxf.staxutils.StaxUtils.copy(StaxUtils.java:793)
	at org.apache.cxf.staxutils.StaxUtils.copy(StaxUtils.java:722)
	at org.apache.cxf.staxutils.StaxUtils.copy(StaxUtils.java:648)
	at org.apache.cxf.databinding.source.XMLStreamDataWriter.write(XMLStreamDataWriter.java:111)
	... 28 more

is that the empty "result" cause the error?

please help me out, thank you!

[Anonymous]

anyone had this problem?