I am testing some interoperability between a Java Client using Axis and
a .NET ASMX Webservice and am experiencing a problem and was wondering
if anyone has an idea of what is going on.
If I have a class that contains a data member that is abstract and try to pass
a
derived class type into the webservice, an XML error is generated. If I receive
the
same exact structure from the webservice all works as expected.
I have a full .NET webservice and java client that will demonstrate the issue
if
anyone wants the code.
I am including the soap messages that are received on the service.
The class definition follows the SOAP Messages.
Thanks,Dave
WebbertSolutions[at]hotmail[dot]com
Good Message - don't send address in - receive
address============================== ----- SoapRequest at 2/27/2007 2:01:41 PM
-----<soapenv:Envelope
xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/";
xmlns:xsd="http://www.w3.org/2001/XMLSchema";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";> <soapenv:Body>
<GetAdmin xmlns="urn:emp:service"> <ns1:person xmlns:ns1="urn:emp:data">
<ns1:Name>Hello World</ns1:Name> <ns1:Age>12</ns1:Age>
</ns1:person> </GetAdmin> </soapenv:Body></soapenv:Envelope> -----
SoapResponse at 2/27/2007 2:01:41 PM -----<soap:Envelope
xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xmlns:xsd="http://www.w3.org/2001/XMLSchema";> <soap:Body> <GetAdminResponse
xmlns="urn:emp:service"> <GetAdminResult xsi:type="Admin"
xmlns="urn:emp:data"> <Name>Hello World</Name> <Age>12</Age>
<Address xsi:type="HomeAddress"> <HouseNumber>234 State
Street</HouseNumber> </Address> <HasPassword>true</HasPassword>
</GetAdminResult> </GetAdminResponse> </soap:Body></soap:Envelope>
Bad Message - populate HomeAddress - send HomeAddress
in============================== ----- SoapRequest at 2/27/2007 2:01:13 PM
-----<soapenv:Envelope
xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/";
xmlns:xsd="http://www.w3.org/2001/XMLSchema";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";> <soapenv:Body>
<GetAdmin xmlns="urn:emp:service"> <ns1:person xmlns:ns1="urn:emp:data">
<ns1:Name>Hello World</ns1:Name> <ns1:Age>12</ns1:Age>
<ns1:Address /> </ns1:person> </GetAdmin>
</soapenv:Body></soapenv:Envelope> ----- SoapResponse at 2/27/2007 2:01:13 PM
-----<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xmlns:xsd="http://www.w3.org/2001/XMLSchema";> <soap:Body> <soap:Fault>
<faultcode>soap:Client</faultcode>
<faultstring>System.Web.Services.Protocols.SoapException: Server was unable to
read request. ---> System.InvalidOperationException: There is an error in XML
document (1, 353). ---> System.InvalidOperationException: The specified type is
abstract: name='Address', namespace='urn:emp:data', at <Address
xmlns='urn:emp:data'>. at
Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationReader1.Read5_Address(Boolean
isNullable, Boolean checkType) at
Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationReader1.Read6_Person(Boolean
isNullable, Boolean checkType) at
Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationReader1.Read7_GetAdmin()
at
Microsoft.Xml.Serialization.GeneratedAssembly.ArrayOfObjectSerializer.Deserialize(XmlSerializationReader
reader) at System.Xml.Serialization.XmlSerializer.Deserialize(XmlReader
xmlReader, String encodingStyle, XmlDeserializationEvents events) --- End of
inner exception stack trace --- at
System.Xml.Serialization.XmlSerializer.Deserialize(XmlReader xmlReader, String
encodingStyle, XmlDeserializationEvents events) at
System.Xml.Serialization.XmlSerializer.Deserialize(XmlReader xmlReader, String
encodingStyle) at
System.Web.Services.Protocols.SoapServerProtocol.ReadParameters() --- End of
inner exception stack trace --- at
System.Web.Services.Protocols.SoapServerProtocol.ReadParameters() at
System.Web.Services.Protocols.WebServiceHandler.CoreProcessRequest()</faultstring>
<detail /> </soap:Fault> </soap:Body></soap:Envelope> public
abstract class PersonBase{ protected PersonBase() { } private string
_name; public string Name { get { return ( _name ); } set
{ _name = value; } }} public class Person : PersonBase{ private int
_age; private Address _address; public int Age { get { return
( _age ); } set { _age = value; } } public Address Address {
get { return ( _address ); } set { _address = value; } }}
public abstract class Address{ protected Address() { }} public class
HomeAddress : Address{ public HomeAddress() { } private string
_houseNumber; public string HouseNumber { get { return (
_houseNumber ); } set { _houseNumber = value; } }}
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