topic Problems with web services task! in Alfresco Archive

Problems with web services task!

massimosassi — Mon, 31 Mar 2014 15:28:28 GMT

Hello, I’m trying to implement a web service task with activiti but I'm not able to solve a problem.I'm following examples in “activiti in action book” and in the “cxf-module SimplisticDataFlow” example on the github activiti repository (https://github.com/Activiti/Activiti/tree/master/modules/activ

Re: Problems with web services task!

trademak — Tue, 01 Apr 2014 07:05:33 GMT

Hi Massimo,

One thing I see is that the IsValidISBN10 and isValidISBN10Result structure refs are not using the correct namespace. Because the imported WSDL has http://webservices.daehosting.com/ISBN and you are using the target namespace in the process definition.

Best regards,

Re: Problems with web services task!

massimosassi — Wed, 02 Apr 2014 11:44:02 GMT

Thanks for the reply,
Now I've changed the BPMN file with the http://webservices.daehosting.com/ISBN namespace

Now the situation is that the process enters in the “web service task” and parse the wsdl, but then it is not able to correctly create the Web service request.

Here the new BPMN file and the current error.


<?xml version="1.0" encoding="UTF-8"?>
<definitions xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL"
 xmlns:activiti="http://activiti.org/bpmn"
 targetNamespace="http://www.bpmnwithactiviti.org" 
 xmlns:tns="http://www.bpmnwithactiviti.org"
 xmlns:isbn="http://webservices.daehosting.com/ISBN">

 <import importType="http://schemas.xmlsoap.org/wsdl/"
  namespace="http://webservices.daehosting.com/ISBN" location="http://webservices.daehosting.com/services/isbnservice.wso?WSDL'/>


 <process id="webserviceprocess">
 
  <startEvent id="startevent" name="Start" />
  <sequenceFlow sourceRef="startevent" targetRef="theScriptTask" />
  
  <scriptTask id="theScriptTask" scriptFormat="groovy" name="Execute script">
   <script>
     System.out.println("sISBNInput : "+sISBNInput);
   </script>
  </scriptTask>
  <sequenceFlow sourceRef="theScriptTask" targetRef="webService" />
  
  <serviceTask id="webService"
   name="request web service"
   implementation="##WebService"
   operationRef="tns:IsValidISBN10Operation">
 
<!–        Warning: The following code abuses the syntax of Data Associations        for a radical shortcut.      –>

   <dataInputAssociation>
    <sourceRef>sISBNInput</sourceRef>
    <targetRef>sISBN</targetRef>
   </dataInputAssociation>
   
   <dataOutputAssociation>
    <sourceRef>IsValidISBN10Result</sourceRef>
    <targetRef>webserviceResponse</targetRef>
   </dataOutputAssociation>
  </serviceTask>
  <sequenceFlow sourceRef="webService" targetRef="waitState" />
  <receiveTask id="waitState" />
  <sequenceFlow sourceRef="waitState" targetRef="endevent" />
  <endEvent id="endevent" name="End" />
 </process>
 
 <itemDefinition id="sISBN" structureRef="string" />
 <itemDefinition id="sISBNInput" structureRef="string" />
 <itemDefinition id="IsValidISBN10Result" structureRef="boolean" />
 <itemDefinition id="webserviceResponse" structureRef="boolean" />
 
 <interface name="Web Service request" implementationRef="isbn:ISBNServiceSoapType">
  <operation id="IsValidISBN10Operation" name="iban operation" implementationRef="isbn:IsValidISBN10">
   <inMessageRef>IsValidISBN10SoapRequestMessage</inMessageRef>
   <outMessageRef>IsValidISBN10SoapResponseMessage</outMessageRef>
  </operation>
 </interface>
 
 <message id="IsValidISBN10SoapRequestMessage" itemRef="tns:IsValidISBN10SoapRequestItem"/>
 <message id="IsValidISBN10SoapResponseMessage" itemRef="tns:IsValidISBN10SoapResponseItem"/> 


 <itemDefinition id="IsValidISBN10SoapRequestItem" structureRef="isbn:IsValidISBN10"/>
 <itemDefinition id="IsValidISBN10SoapResponseItem" structureRef="isbn:IsValidISBN10Response"/>
 
</definitions>


apr 02, 2014 1:39:06 PM org.activiti.engine.impl.webservice.WSOperation safeSend
WARNING: Error calling WS http://webservices.daehosting.com/ISBN:ISBNService
org.apache.cxf.interceptor.Fault: Response was of unexpected text/html ContentType.  Incoming portion of HTML stream: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"/>
<title>500 - Internal server error.</title>
<style type="text/css">
<!–
body{margin:0;font-size:.7em;font-family:Verdana, Arial, Helvetica, sans-serif;background:#EEEEEE;}
fieldset{padding:0 15px 10px 15px;} 
h1{font-size:2.4em;margin:0;color:#FFF;}
……..

I’ve captured a trace with wireshark and the request it’s not well formed
It’s appears in the following way:



<soap:Envelope xmlns:s11='http://schemas.xmlsoap.org/soap/envelope/'>
  <soap:Body>
    <sValidISBN10 xmlns: ='http://webservices.daehosting.com/ISBN'>
  </soap:Body>
</soap:Envelope>

So the request doesn’t contain the sISBN element in the sValidISBN10 operation.

Could you help me to go ahead ?

Thanks a lot in advances!!
Massimo

P.s. I have also tried in this way with the same result

   <ioSpecification>
    <dataInput
     itemSubjectRef="tns:IsValidISBN10SoapRequestItem" id="dataInput" />
    <dataOutput
     itemSubjectRef="tns:IsValidISBN10SoapResponseItem" id="dataOutput" />
    <inputSet>
     <dataInputRefs>dataInput</dataInputRefs>
    </inputSet>
    <outputSet>
     <dataOutputRefs>dataOutput</dataOutputRefs>
    </outputSet>
   </ioSpecification>

<!–        Warning: The following code abuses the syntax of Data Associations        for a radical shortcut.      –>

   <dataInputAssociation>
    <sourceRef>sISBNInput</sourceRef>
    <targetRef>dataInput</targetRef>
    <assignment>
     <from>${sISBNInput}</from>
     <to>${dataInput.sISBN}</to>
    </assignment>
   </dataInputAssociation>

Re: Problems with web services task!

trademak — Mon, 07 Apr 2014 09:53:03 GMT

If you create a unit test project so I can reproduce it easily I can look into it in more detail.
Could you do that?

Re: Problems with web services task!

massimosassi — Tue, 08 Apr 2014 07:54:32 GMT

I've uploaded the unit test project here https://github.com/MassimoSassi/WSsimpleUnitTest1
Let'me know if you can read and reproduce the unit test project

Thanks a lot,
Massimo

Re: Problems with web services task!

trademak — Tue, 08 Apr 2014 13:16:03 GMT

Hi Massimo,

I just gave the web service a try, first with SoapUI. It gives me back a HTTP 500 error when I make a valid request.
Are you sure this web service is working as expected?

Best regards,

Re: Problems with web services task!

massimosassi — Wed, 09 Apr 2014 09:21:28 GMT

Hi Tiijs,
yes the Web service is working if the request is well formed, otherwise the server returns the HTTP 500 error.
The sISBN parameter in the IsValidISBN10 operation must contain a 10 char string (You have to pass a 10 digits number)
For example if you pass "0123456789" in the sISBN the server return "true" in the result
I've tried also with soapUI and it's ok.

   <soapenv:Header/>
   <soapenv:Body>
      <isbn:IsValidISBN10>
         <isbn:sISBN>0123456789</isbn:sISBN>
      </isbn:IsValidISBN10>
   </soapenv:Body>
</soapenv:Envelope>

I've also implemented the request with an activiti process but using a "java service task" instead of a BPMN "web services task".
And with the java service task is ok!
I'd like to implement and test it also with a BPMN "web services task", but I'm not able to insert the right sISBN parameter in the operation.

Thanks a lot,
Massimo

Re: Problems with web services task!

trademak — Mon, 14 Apr 2014 07:27:44 GMT

Hi Massimo,

Ok, yes now I get a valid response back.
I've also found the error in the BPMN process definition. The sISBN input parameter should be in lower case, so sisbn. Then it works. Why it needs to be in lowercase right now I haven't found yet, shouldn't be needed of course. Maybe you could create a JIRA for that.

Best regards,

Re: Problems with web services task!

massimosassi — Wed, 16 Apr 2014 09:56:54 GMT

Thanks TiJs,
in lower case it's ok.
I'll try to create a Jira in the next days if it can useful.

Thks & regards,
Massimo

Re: Problems with web services task!

robinmehta — Tue, 05 Aug 2014 11:06:22 GMT

Hello..
I like this valuable concept and also want to discuss my problem here.. I used Web Service Task to import data from wsdl web link to an xml.The service is made with ws Http Binding, i think this is the problem , but can't find the reson of this problem..Please tell me what i can do..!!
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Re: Problems with web services task!

fahad1 — Wed, 27 Aug 2014 15:35:02 GMT

I am still getting null for the output value. If anyone can help especially Massimo or trademak, who have discussed on this topic. I am using the same project https://github.com/MassimoSassi/WSsimpleUnitTest1 and running it very well.
I noticed that the web service is invoked CORRECTLY, but the response is NULL.
Can someone told me why my response is null?? I am using sisbn as input and input is reached at server correctly, but response is becoming null ??

Waiting for any suggestion please?