Deserializer error : could not find deserializer for type

Question

Hi folks,
I am trying to send a XML file in web service request and trying to get the same back, I am getting the following exception while trying to do this,
org.xml.sax.SAXException: Deserializing parameter 'echo':  could not find deserializer for type {Echo}echo
AxisFault
faultCode: {http://schemas.xmlsoap.org/soap/envelope/}Server.userException
faultSubcode:
faultString: org.xml.sax.SAXException: Deserializing parameter 'echo':  could not find deserializer for type {Echo}echo
faultActor:
faultNode:
faultDetail:
     {http://xml.apache.org/axis/}hostname:localhost
org.xml.sax.SAXException: Deserializing parameter 'echo':  could not find deserializer for type {Echo}echo
     at org.apache.axis.message.SOAPFaultBuilder.createFault(SOAPFaultBuilder.java:222)
     at org.apache.axis.message.SOAPFaultBuilder.endElement(SOAPFaultBuilder.java:129)
     at org.apache.axis.encoding.DeserializationContext.endElement(DeserializationContext.java:1087)
     at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endElement(Unknown Source)
     at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanEndElement(Unknown Source)
     at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(Unknown Source)
     at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(Unknown Source)
     at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(Unknown Source)
     at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
     at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
     at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
     at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown Source)
     at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Unknown Source)
     at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
     at javax.xml.parsers.SAXParser.parse(Unknown Source)
     at org.apache.axis.encoding.DeserializationContext.parse(DeserializationContext.java:227)
     at org.apache.axis.SOAPPart.getAsSOAPEnvelope(SOAPPart.java:696)
     at org.apache.axis.Message.getSOAPEnvelope(Message.java:435)
     at org.apache.axis.handlers.soap.MustUnderstandChecker.invoke(MustUnderstandChecker.java:62)
     at org.apache.axis.client.AxisClient.invoke(AxisClient.java:206)
     at org.apache.axis.client.Call.invokeEngine(Call.java:2784)
     at org.apache.axis.client.Call.invoke(Call.java:2767)
     at org.apache.axis.client.Call.invoke(Call.java:2443)
     at org.apache.axis.client.Call.invoke(Call.java:2366)
     at org.apache.axis.client.Call.invoke(Call.java:1812)
     at com.sel.services.EchoRequest.main(EchoRequest.java:42)
The following is my client code,
import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.xml.namespace.QName;
import javax.xml.rpc.ParameterMode;
import org.apache.axis.client.Call;
import org.apache.axis.client.Service;
import org.apache.axis.encoding.ser.JAFDataHandlerDeserializerFactory;
import org.apache.axis.encoding.ser.JAFDataHandlerSerializerFactory;
public class EchoRequest {
      * @param args
     public static void main(String[] args) {
          try {
                    String endpoint = "http://localhost:8080/axis/Echo.jws";
                    Service  service = new Service();
                  Call     call    = (Call) service.createCall();
                  call.setTargetEndpointAddress( new java.net.URL(endpoint) );
                  call.setOperationName(new QName(("Echo"),"DataHandler"));
                  QName qName = new QName("Echo" , "echo");
                  DataHandler dhSource = new DataHandler(new FileDataSource("D:/Workspace/Sandbox/Request.xml"));
                  call.registerTypeMapping(dhSource.getClass(),qName,JAFDataHandlerSerializerFactory.class,JAFDataHandlerDeserializerFactory.class );
                  call.addParameter("echo", qName , ParameterMode.IN);
                  call.setProperty(call.ATTACHMENT_ENCAPSULATION_FORMAT, call.ATTACHMENT_ENCAPSULATION_FORMAT_MIME);
                  call.setReturnType(qName);                 
                  Object ret = call.invoke(new Object[] {dhSource});
                    System.out.println();
                } catch (Exception e) {
                  System.err.println(e.toString());
                  e.printStackTrace();
     }The following is my jws,
import java.io.Serializable;
import javax.activation.DataHandler;
public class Echo implements Serializable{
     public DataHandler echo(DataHandler echo){
          return echo;
}The following is my deploy.wsdd,
<deployment     xmlns="http://xml.apache.org/axis/wsdd/"
                       xmlns:java="http://xml.apache.org/axis/wsdd/providers/java"
                       xmlns:ns1="Echo">
     <service name="Echo" provider="java:RPC">
             <parameter name="className" value="Echo"/>
          <parameter name="allowedMethods" value="echo"/>
          <operation name="echoString" returnQName="returnqName" returnType="ns1:DataHandler">
                 <parameter name="echo" type="ns1:DataHandler"/>
         </operation>
          <typeMapping deserializer="org.apache.axis.encoding.ser.JAFDataHandlerDeserializerFactory"
               languageSpecificType="java:javax.activation.DataHandler" qname="ns1:DataHandler"
                  serializer="org.apache.axis.encoding.ser.JAFDataHandlerSerializerFactory"
              encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"/>
       </service>
</deployment>And following is my server-config.wsdd,
<?xml version="1.0" encoding="UTF-8"?>
<deployment xmlns="http://xml.apache.org/axis/wsdd/" xmlns:java="http://xml.apache.org/axis/wsdd/providers/java">
<globalConfiguration>
  <parameter name="sendMultiRefs" value="true"/>
  <parameter name="disablePrettyXML" value="true"/>
  <parameter name="adminPassword" value="admin"/>
  <parameter name="attachments.Directory" value="D:\ApacheTomcat5.5.26\webapps\axis\WEB-INF\attachments"/>
  <parameter name="dotNetSoapEncFix" value="true"/>
  <parameter name="enableNamespacePrefixOptimization" value="false"/>
  <parameter name="sendXMLDeclaration" value="true"/>
  <parameter name="attachments.implementation" value="org.apache.axis.attachments.AttachmentsImpl"/>
  <parameter name="sendXsiTypes" value="true"/>
  <requestFlow>
   <handler type="java:org.apache.axis.handlers.JWSHandler">
    <parameter name="scope" value="session"/>
   </handler>
   <handler type="java:org.apache.axis.handlers.JWSHandler">
    <parameter name="scope" value="request"/>
    <parameter name="extension" value=".jwr"/>
   </handler>
  </requestFlow>
</globalConfiguration>
<handler name="LocalResponder" type="java:org.apache.axis.transport.local.LocalResponder"/>
<handler name="URLMapper" type="java:org.apache.axis.handlers.http.URLMapper"/>
<handler name="Authenticate" type="java:org.apache.axis.handlers.SimpleAuthenticationHandler"/>
<service name="AdminService" provider="java:MSG">
  <parameter name="allowedMethods" value="AdminService"/>
  <parameter name="enableRemoteAdmin" value="false"/>
  <parameter name="className" value="org.apache.axis.utils.Admin"/>
  <namespace>http://xml.apache.org/axis/wsdd/</namespace>
</service>
<service name="Version" provider="java:RPC">
  <parameter name="allowedMethods" value="getVersion"/>
  <parameter name="className" value="org.apache.axis.Version"/>
</service>
<service name="Echo" provider="java:RPC">
  <operation name="echoString" returnQName="returnqName" returnType="ns1:DataHandler" soapAction="" xmlns:ns1="Echo">
   <parameter name="echo" type="ns1:DataHandler"/>
  </operation>
  <parameter name="allowedMethods" value="echo"/>
  <parameter name="className" value="Echo"/>
  <typeMapping deserializer="org.apache.axis.encoding.ser.JAFDataHandlerDeserializerFactory" encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" qname="ns2:DataHandler" serializer="org.apache.axis.encoding.ser.JAFDataHandlerSerializerFactory" type="java:javax.activation.DataHandler" xmlns:ns2="Echo"/>
</service>
<transport name="http">
  <requestFlow>
   <handler type="URLMapper"/>
   <handler type="java:org.apache.axis.handlers.http.HTTPAuthHandler"/>
  </requestFlow>
  <parameter name="qs:list" value="org.apache.axis.transport.http.QSListHandler"/>
  <parameter name="qs:wsdl" value="org.apache.axis.transport.http.QSWSDLHandler"/>
  <parameter name="qs.list" value="org.apache.axis.transport.http.QSListHandler"/>
  <parameter name="qs.method" value="org.apache.axis.transport.http.QSMethodHandler"/>
  <parameter name="qs:method" value="org.apache.axis.transport.http.QSMethodHandler"/>
  <parameter name="qs.wsdl" value="org.apache.axis.transport.http.QSWSDLHandler"/>
</transport>
<transport name="local">
  <responseFlow>
   <handler type="LocalResponder"/>
  </responseFlow>
</transport>
</deployment>The following is the directory structure which I have in my tomcat for this service
- axis
-----WEB-INF
----------classes
----------jwsClasses
----------lib
----------deploy.wsdd
----------server-config.wsdd
I am really not sure where I am getting wrong. Please help me with this.
Thanks
Edited by: Jadaaih on Jun 19, 2008 1:52 AM

Answer 1

Ok, this may not be your problem, but I was getting this error as well.
I had multiple services running, and I was able to use SOAP test clients and connect to them and get responses, no problem.
I wrote some client code to connect to one, and it worked just fine.
Then I wrote some client code to connect to the other, and I got an error like
faultString: org.xml.sax.SAXException: Deserializing parameter 'initiateIn':  could not find deserializer for type {urn:SOAPFulfillmentAPI}DoSomething
...I tore my hair out trying to figure out why a service that functions perfectly using other tests would fail in java. Then I realized I was pointing to the end point URL.
It looks like AJAX tries to deserialize the parameters before it does any of basic sanity check to see the method your looking for even exists (even in debug mode). So instead of getting a useful error like "Cant find method 'DoSomething' " you get some crap about not being able to understand the datatype for an arguement.
I hope this helps someone one day =)