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Serialization problem, VB.Net Client consuming Java Axis Web Service

I get the following exception when my VB.NET app calls a Java web service that returns an array of objects. The same call works for a single object though. So looks like there is no problem serializing the object but there seems to be a problem serializing an array of objects. Any help will be appreciated

"Cannot assign object of type System.Object[] to an object of type ElectronicWalle t.C2PTest.Payme ntItem."

[System.InvalidO perationExcepti on]: {System.Invalid OperationExcept ion
HelpLink: Nothin
InnerException: {System.Invalid CastException
Message: "There is an error in XML document (12, 19).
Source: "System.Xml

StackTrace: " at System.Xml.Seri alization.XmlSe rializer.Deseri alize(XmlReader xmlReader, String encodingStyle
at System.Xml.Seri alization.XmlSe rializer.Deseri alize(XmlReader xmlReader
at System.Web.Serv ices.Protocols. SoapHttpClientP rotocol.ReadRes ponse(SoapClien tMessage message, WebResponse response, Stream responseStream, Boolean asyncCall
at System.Web.Serv ices.Protocols. SoapHttpClientP rotocol.Invoke( String methodName, Object[] parameters
at ElectronicWalle t.C2PTest.SOAPP aymentServiceSe rvice.method1(S tring par1, String par2, String par3, Int64 par4, String par5, String par6, Boolean par7, String par8, String par9, String par10, String par11) in C:\Projects\Gat eway\Electronic Wallet\Electron icWalletWebServ ice\Web References\C2PT est\Reference.v b:line 4
at ElectronicWalle t.PayoutCommon. DoPayout(Int64 lngTransID, XmlDocument& oWSReq, XmlDocument& oWSResp) in C:\Projects\Gat eway\Electronic Wallet\Electron icWalletWebServ ice\PayoutCommo n.vb:line 22
at ElectronicWalle t.Process.EWPay out(String s_Payout) in C:\Projects\Gat eway\Electronic Wallet\Electron icWalletWebServ ice\Process.asm x.vb:line 153
TargetSite: {System.Reflect ion.RuntimeMeth odInfo
?ex.InnerExcept ion
{System.Invalid CastException
[System.InvalidC astException]: {System.Invalid CastException
HelpLink: Nothin
InnerException: Nothin
Message: "Cannot assign object of type System.Object[] to an object of type ElectronicWalle t.C2PTest.Payme ntItem[].
Source: "fqsomxwu
StackTrace: " at Microsoft.Xml.S erialization.Ge neratedAssembly .XmlSerializati onReader1.Read3 _ResponsePar6l(
at System.Xml.Seri alization.XmlSe rializationRead er.ReadReferenc ingElement(Stri ng name, String ns, Boolean elementCanBeTyp e, String& fixupReference
at System.Xml.Seri alization.XmlSe rializationRead er.ReadReferenc edElements(
at Microsoft.Xml.S erialization.Ge neratedAssembly .XmlSerializati onReader1.Read6 _method1Respons e()
TargetSite: {System.Reflect ion.RuntimeMeth odInfo

Related code from .NET proxy class.......... ............... ...

'<remarks/
<System.Web.Ser vices.Protocols .SoapRpcMethodA ttribute("", RequestNamespac e:="http://somewebsite", ResponseNamespa ce:="https://somewebsite/method1")>
Public Function method1(ByVal par1 As String, ByVal par2 As String, ByVal par3 As String, ByVal par4 As Long, ByVal par5 As String, ByVal par6 As String, ByVal par7 As Boolean, ByVal par8 As String, ByVal par9 As String, ByVal par10 As String, ByVal par11 As String) As <System.Xml.Ser ialization.Soap ElementAttribut e("method1Retur n")> ResponseMode
Dim results() As Object = Me.Invoke("meth od1", New Object() {par1, par2, par3,_u97 ?mount, par5, par6, par7, par8, par9, par10, par11}

Return CType(results(0 ),ResponseModel
End Functio

'<remarks/
<System.Xml.Ser ialization.Soap TypeAttribute(" ResponseModel", "http://somewebsite")>
Public Class ResponseMode

'<remarks/
Public ret1 As Strin

'<remarks/
Public ret2 As Strin

'<remarks/
Public ret 3 As Strin

'<remarks/
Public paymentItems() As PaymentIte
End Clas

'<remarks/
<System.Xml.Ser ialization.Soap TypeAttribute(" PaymentItem", "http://somewebsite")>
Public Class PaymentIte

'<remarks/
Public ret4 As Strin

'<remarks/
Public ret5 As Strin

'<remarks/>
Public ret6 As String
End Class
Here is the VB.NET code........... ............... ...

Dim SoapRequest As New C2PTest.SOAPPay mentServiceServ ice
Dim C2PResult As New C2PTest.Respons eModel
Dim Dict As New Collections.Spe cialized.String Dictionary
C2PResult = SoapRequest.met hod1(Dict("par1 "), Dict("par2"), Dict("par3"), Dict("par4"), _
Dict("par5"), Dict("Par6"), Dict("par7"), Dict("par8"), Dict("par9"), _
Dict("par10"), Dict("par11"))
Here is the WSDL file........... ............... ...

<wsdl:definitio ns targetNamespace ="https://somewebsite/method1" xmlns="http://schemas.xmlsoap .org/wsdl/" xmlns:apachesoa p="http://xml.apache.org/xml-soap" xmlns:impl="htt ps://somewebsite/method1" xmlns:intf="htt ps://somewebsite/method1" xmlns:soapenc=" http://schemas.xmlsoap .org/soap/encoding/" xmlns:tns1="htt p://somewebsite" xmlns:wsdl="htt p://schemas.xmlsoap .org/wsdl/" xmlns:wsdlsoap= "http://schemas.xmlsoap .org/wsdl/soap/" xmlns:xsd="http ://www.w3.org/2001/XMLSchema">
<wsdl:types>
<schema targetNamespace ="http://somewebsite" xmlns="http://www.w3.org/2001/XMLSchema">
<import namespace="http ://schemas.xmlsoap .org/soap/encoding/"/>
<complexType name="PaymentIt em">
<sequence>
<element name="ret4" nillable="true" type="xsd:strin g"/>
<element name="ret5" nillable="true" type="xsd:strin g"/>
<element name="ret6" nillable="true" type="xsd:strin g"/>
</sequence>
</complexType>
<complexType name="ResponseM odel">
<sequence>
<element name="ret1" nillable="true" type="xsd:strin g"/>
<element name="ret2" nillable="true" type="xsd:strin g"/>
<element name="ret3" nillable="true" type="xsd:strin g"/>
<element name="paymentIt ems" nillable="true" type="impl:Arra yOf_tns1_Paymen tItem"/>
</sequence>
</complexType>
</schema>
<schema targetNamespace ="https://somewebsite/method1" xmlns="http://www.w3.org/2001/XMLSchema">
<import namespace="http ://schemas.xmlsoap .org/soap/encoding/"/>
<complexType name="ArrayOf_t ns1_PaymentItem ">
<complexContent >
<restriction base="soapenc:A rray">
<attribute ref="soapenc:ar rayType" wsdl:arrayType= "tns1:PaymentIt em[]"/>
</restriction>
</complexContent>
</complexType>
</schema>
</wsdl:types>
<wsdl:message name="method1Re quest">
<wsdl:part name="par1" type="xsd:strin g"/>
<wsdl:part name="par2" type="xsd:strin g"/>
<wsdl:part name="par3" type="xsd:strin g"/>
<wsdl:part name="par4" type="xsd:long"/>
<wsdl:part name="par5" type="xsd:strin g"/>
<wsdl:part name="par6" type="xsd:strin g"/>
<wsdl:part name="par7" type="xsd:boole an"/>
<wsdl:part name="par8" type="xsd:strin g"/>
<wsdl:part name="par9" type="xsd:strin g"/>
<wsdl:part name="par10" type="xsd:strin g"/>
<wsdl:part name="par11" type="xsd:strin g"/>
</wsdl:message>
<wsdl:message name="method1Re sponse">
<wsdl:part name="method1Re turn" type="tns1:Resp onseModel"/>
</wsdl:message>
<wsdl:portTyp e name="SOAPPayme ntService">
<wsdl:operati on name="method1" parameterOrder= "par1 par2 par3 par4 par5 par6 par7 par8 par9 par10 par11">
<wsdl:input message="impl:m ethod1Request" name="method1Re quest"/>
<wsdl:output message="impl:m ethod1Response" name="method1Re sponse"/>
</wsdl:operation>
</wsdl:portType>
<wsdl:binding name="method1So apBinding" type="impl:SOAP PaymentService" >
<wsdlsoap:bindi ng style="rpc" transport="http ://schemas.xmlsoap .org/soap/http"/>
<wsdl:operati on name="method1">
<wsdlsoap:opera tion soapAction=""/>
<wsdl:input name="method1Re quest">
<wsdlsoap:bod y encodingStyle=" http://schemas.xmlsoap .org/soap/encoding/" namespace="http ://somewebsite" use="encoded"/>
</wsdl:input>
<wsdl:output name="method1Re sponse">
<wsdlsoap:bod y encodingStyle=" http://schemas.xmlsoap .org/soap/encoding/" namespace="http s://somewebsite/method1" use="encoded"/>
</wsdl:output>
</wsdl:operation>
</wsdl:binding>
<wsdl:service name="SOAPPayme ntServiceServic e">
<wsdl:port binding="impl:m ethod1SoapBindi ng" name="method1">
<wsdlsoap:addre ss location="https ://somewebsite/method1"/>
</wsdl:port>
</wsdl:service>
</wsdl:definition s>


---
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Nov 18 '05 #1
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