Error in generated webservice client

Question

Hello all,
I've been working on some webservice that receives large attachments, and my eye fell on the "streaming attachments" functionality of oc4j 10.1.3. So I've followed the examples of the "Oracle Application server Web Services Developer's Guide" pdf, assembled my webservice and deployed it. No problem so far. So, intent on testing my fresh service, I took the wsdl that was generated and used the WebserviceAssembler to generate a clientwith the genProxy command.
However, everytime I try to run the client I get the following error:
java.rmi.RemoteException: Error parsing envelope: (1, 1) Start of root element expected.; nested exception is:
     javax.xml.soap.SOAPException: Error parsing envelope: (1, 1) Start of root element expected.
     at com.xplanation.workflow.soap.runtime.HttpSoap11Binding_Stub.launch(HttpSoap11Binding_Stub.java:124)
     at com.xplanation.workflow.soap.ProjectLaunchPortClient.launch(ProjectLaunchPortClient.java:74)
     at com.xplanation.workflow.soap.ProjectLaunchPortClient.main(ProjectLaunchPortClient.java:57)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:324)
     at com.intellij.rt.execution.application.AppMain.main(AppMain.java:78)
Caused by: javax.xml.soap.SOAPException: Error parsing envelope: (1, 1) Start of root element expected.
     at oracle.j2ee.ws.saaj.soap.soap11.SOAPImplementation11.createEnvelope(SOAPImplementation11.java:93)
     at oracle.j2ee.ws.saaj.soap.SOAPPartImpl.getEnvelope(SOAPPartImpl.java:75)
     at oracle.j2ee.ws.saaj.soap.MessageImpl.getSOAPBody(MessageImpl.java:678)
     at oracle.j2ee.ws.client.StreamingSender._preHandlingHook(StreamingSender.java:662)
     at oracle.j2ee.ws.client.StubBase._preHandlingHook(StubBase.java:634)
     at oracle.j2ee.ws.client.StreamingSender._sendImpl(StreamingSender.java:194)
     at oracle.j2ee.ws.client.StreamingSender._send(StreamingSender.java:110)
     at com.xplanation.workflow.soap.runtime.HttpSoap11Binding_Stub.launch(HttpSoap11Binding_Stub.java:96)
     ... 7 more
Caused by: oracle.xml.parser.v2.XMLParseException: Start of root element expected.
     at oracle.xml.parser.v2.XMLError.flushErrors1(XMLError.java:320)
     at oracle.xml.parser.v2.NonValidatingParser.parseRootElement(NonValidatingParser.java:328)
     at oracle.xml.parser.v2.NonValidatingParser.parseDocument(NonValidatingParser.java:290)
     at oracle.xml.parser.v2.XMLParser.parse(XMLParser.java:199)
     at oracle.j2ee.ws.saaj.soap.soap11.SOAPImplementation11.createEnvelope(SOAPImplementation11.java:67)
     ... 14 more
Is there any way to check the SOAP message that is being sent? Maybe I'm initializing the Attachments incorrectly?
Here's the code I use for that...
DataSource dataSource = new InputStreamDataSource("application/octet-stream", new FileInputStream(file));
                    dataHandler = new DataHandler(dataSource);
                    att = new AttachmentImpl(file.getName(), dataHandler);
                    System.out.println(" - attachment created for " + att.getId());
//                    att = factory.createAttachment(file.getName(), "application/octet-stream", new FileInputStream(file));
                    atts.getOutgoingAttachments().addAttachment(att);
Finding documentation about these streaming attachments is such a drag, that I'm considering switching to MIME or DIME. Does anyone have any suggestions? Keep in mind that I'll have to deal with possibly large files (certainly up to 20MB)...
Regards,
Stan

Answer 1

Thought I'd add the generated WSDL file...
Thanks in advance for any replies!
<?xml version = '1.0' encoding = 'UTF-8'?>
<definitions xmlns="http://schemas.xmlsoap.org/wsdl/" xmlns:soap12="http://schemas.xmlsoap.org/wsdl/soap12/" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:mime="http://schemas.xmlsoap.org/wsdl/mime/" xmlns:tns="http://soap.workflow.xplanation.com/" name="projectlaunch" targetNamespace="http://soap.workflow.xplanation.com/">
<types>
<schema xmlns="http://www.w3.org/2001/XMLSchema" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:soap11-enc="http://schemas.xmlsoap.org/soap/encoding/" targetNamespace="http://soap.workflow.xplanation.com/" elementFormDefault="qualified">
<complexType name="launch">
<sequence>
<element name="processCode" type="string" nillable="true"/>
<element name="processType" type="string" nillable="true"/>
<element name="projectTitle" type="string" nillable="true"/>
<element name="projectNumber" type="string" nillable="true"/>
<element name="docTypeCode" type="string" nillable="true"/>
<element name="domainCode" type="string" nillable="true"/>
<element name="sourceLanguage" type="string" nillable="true"/>
<element name="targetLanguages" type="string" nillable="true" minOccurs="0" maxOccurs="unbounded"/>
<element name="dueDate" type="string" nillable="true"/>
<element name="userLogin" type="string" nillable="true"/>
<element name="password" type="string" nillable="true"/>
</sequence>
</complexType>
<complexType name="launchResponse">
<sequence>
<element name="result" type="int" nillable="true"/>
</sequence>
</complexType>
<complexType name="IOException">
<sequence>
<element name="message" type="string" nillable="true"/>
</sequence>
</complexType>
<element name="launchElement" type="tns:launch"/>
<element name="launchResponseElement" type="tns:launchResponse"/>
<element name="IOExceptionElement" type="tns:IOException"/>
</schema>
</types>
<message name="StreamedProjectLaunch_launchResponse">
<part name="parameters" element="tns:launchResponseElement"/>
</message>
<message name="StreamedProjectLaunch_launch">
<part name="parameters" element="tns:launchElement"/>
</message>
<message name="IOException">
<part name="IOExceptionElement" element="tns:IOExceptionElement"/>
</message>
<portType name="StreamedProjectLaunch">
<operation name="launch">
<input message="tns:StreamedProjectLaunch_launch"/>
<output message="tns:StreamedProjectLaunch_launchResponse"/>
<fault name="IOException" message="tns:IOException"/>
</operation>
</portType>
<binding name="HttpSoap11Binding" type="tns:StreamedProjectLaunch">
<soap:binding style="document" transport="http://schemas.xmlsoap.org/soap/http"/>
<operation name="launch">
<soap:operation soapAction="http://soap.workflow.xplanation.com//launch"/>
<sa:stream-attachments xmlns:sa="http://oracle.com/schemas/webservices/streaming-attachments" name="attachments"/>
<input>
<soap:body use="literal" parts="parameters"/>
</input>
<output>
<soap:body use="literal" parts="parameters"/>
</output>
<fault name="IOException">
<soap:fault name="IOException" use="literal" encodingStyle=""/>
</fault>
</operation>
</binding>
<service name="projectlaunch">
<port name="ProjectLaunchPort" binding="tns:HttpSoap11Binding">
<soap:address location="http://localhost:8888/projectlaunch/projectlaunch"/>
</port>
</service>
</definitions>