Using DII in JAX-RPC

Question

I've been trying to connect (unsuccessfully so far) to a webservice using DII in JAX-RPC. Was able to connect to the said webservice successfully using static stubs. But our requirement is for dynamic invocation. Sorry if a topic like this has been posted already. I did search the forums but couldn't find the answer to my problem.
The WSDL for the web service is as follows:
<?xml version="1.0" encoding="utf-8"?>
<definitions xmlns:http="http://schemas.xmlsoap.org/wsdl/http/" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:s="http://www.w3.org/2001/XMLSchema" xmlns:s0="http://secure.yehey.com/2003/01/PayPlus" xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/" xmlns:tm="http://microsoft.com/wsdl/mime/textMatching/" xmlns:mime="http://schemas.xmlsoap.org/wsdl/mime/" targetNamespace="http://secure.yehey.com/2003/01/PayPlus" xmlns="http://schemas.xmlsoap.org/wsdl/">
<types>
<s:schema elementFormDefault="qualified" targetNamespace="http://secure.yehey.com/2003/01/PayPlus">
<s:element name="Process">
<s:complexType>
<s:sequence>
<s:element minOccurs="0" maxOccurs="1" name="inpData" type="s:string" />
</s:sequence>
</s:complexType>
</s:element>
<s:element name="ProcessResponse">
<s:complexType>
<s:sequence>
<s:element minOccurs="0" maxOccurs="1" name="ProcessResult" type="s:string" />
</s:sequence>
</s:complexType>
</s:element>
<s:element name="GetStatus">
<s:complexType>
<s:sequence>
<s:element minOccurs="0" maxOccurs="1" name="inxml" type="s:string" />
</s:sequence>
</s:complexType>
</s:element>
<s:element name="GetStatusResponse">
<s:complexType>
<s:sequence>
<s:element minOccurs="0" maxOccurs="1" name="GetStatusResult" type="s:string" />
</s:sequence>
</s:complexType>
</s:element>
<s:element name="GetRedirectURL">
<s:complexType>
<s:sequence>
<s:element minOccurs="0" maxOccurs="1" name="inpURL" type="s:string" />
</s:sequence>
</s:complexType>
</s:element>
<s:element name="GetRedirectURLResponse">
<s:complexType>
<s:sequence>
<s:element minOccurs="0" maxOccurs="1" name="GetRedirectURLResult" type="s:string" />
</s:sequence>
</s:complexType>
</s:element>
<s:element name="string" nillable="true" type="s:string" />
</s:schema>
</types>
<message name="ProcessSoapIn">
<part name="parameters" element="s0:Process" />
</message>
<message name="ProcessSoapOut">
<part name="parameters" element="s0:ProcessResponse" />
</message>
<message name="GetStatusSoapIn">
<part name="parameters" element="s0:GetStatus" />
</message>
<message name="GetStatusSoapOut">
<part name="parameters" element="s0:GetStatusResponse" />
</message>
<message name="GetRedirectURLSoapIn">
<part name="parameters" element="s0:GetRedirectURL" />
</message>
<message name="GetRedirectURLSoapOut">
<part name="parameters" element="s0:GetRedirectURLResponse" />
</message>
<message name="ProcessHttpGetIn">
<part name="inpData" type="s:string" />
</message>
<message name="ProcessHttpGetOut">
<part name="Body" element="s0:string" />
</message>
<message name="GetStatusHttpGetIn">
<part name="inxml" type="s:string" />
</message>
<message name="GetStatusHttpGetOut">
<part name="Body" element="s0:string" />
</message>
<message name="GetRedirectURLHttpGetIn">
<part name="inpURL" type="s:string" />
</message>
<message name="GetRedirectURLHttpGetOut">
<part name="Body" element="s0:string" />
</message>
<message name="ProcessHttpPostIn">
<part name="inpData" type="s:string" />
</message>
<message name="ProcessHttpPostOut">
<part name="Body" element="s0:string" />
</message>
<message name="GetStatusHttpPostIn">
<part name="inxml" type="s:string" />
</message>
<message name="GetStatusHttpPostOut">
<part name="Body" element="s0:string" />
</message>
<message name="GetRedirectURLHttpPostIn">
<part name="inpURL" type="s:string" />
</message>
<message name="GetRedirectURLHttpPostOut">
<part name="Body" element="s0:string" />
</message>
<portType name="PayplusSoap">
<operation name="Process">
<input message="s0:ProcessSoapIn" />
<output message="s0:ProcessSoapOut" />
</operation>
<operation name="GetStatus">
<input message="s0:GetStatusSoapIn" />
<output message="s0:GetStatusSoapOut" />
</operation>
<operation name="GetRedirectURL">
<input message="s0:GetRedirectURLSoapIn" />
<output message="s0:GetRedirectURLSoapOut" />
</operation>
</portType>
<portType name="PayplusHttpGet">
<operation name="Process">
<input message="s0:ProcessHttpGetIn" />
<output message="s0:ProcessHttpGetOut" />
</operation>
<operation name="GetStatus">
<input message="s0:GetStatusHttpGetIn" />
<output message="s0:GetStatusHttpGetOut" />
</operation>
<operation name="GetRedirectURL">
<input message="s0:GetRedirectURLHttpGetIn" />
<output message="s0:GetRedirectURLHttpGetOut" />
</operation>
</portType>
<portType name="PayplusHttpPost">
<operation name="Process">
<input message="s0:ProcessHttpPostIn" />
<output message="s0:ProcessHttpPostOut" />
</operation>
<operation name="GetStatus">
<input message="s0:GetStatusHttpPostIn" />
<output message="s0:GetStatusHttpPostOut" />
</operation>
<operation name="GetRedirectURL">
<input message="s0:GetRedirectURLHttpPostIn" />
<output message="s0:GetRedirectURLHttpPostOut" />
</operation>
</portType>
<binding name="PayplusSoap" type="s0:PayplusSoap">
<soap:binding transport="http://schemas.xmlsoap.org/soap/http" style="document" />
<operation name="Process">
<soap:operation soapAction="http://secure.yehey.com/2003/01/PayPlus/Process" style="document" />
<input>
<soap:body use="literal" />
</input>
<output>
<soap:body use="literal" />
</output>
</operation>
<operation name="GetStatus">
<soap:operation soapAction="http://secure.yehey.com/2003/01/PayPlus/GetStatus" style="document" />
<input>
<soap:body use="literal" />
</input>
<output>
<soap:body use="literal" />
</output>
</operation>
<operation name="GetRedirectURL">
<soap:operation soapAction="http://secure.yehey.com/2003/01/PayPlus/GetRedirectURL" style="document" />
<input>
<soap:body use="literal" />
</input>
<output>
<soap:body use="literal" />
</output>
</operation>
</binding>
<binding name="PayplusHttpGet" type="s0:PayplusHttpGet">
<http:binding verb="GET" />
<operation name="Process">
<http:operation location="/Process" />
<input>
<http:urlEncoded />
</input>
<output>
<mime:mimeXml part="Body" />
</output>
</operation>
<operation name="GetStatus">
<http:operation location="/GetStatus" />
<input>
<http:urlEncoded />
</input>
<output>
<mime:mimeXml part="Body" />
</output>
</operation>
<operation name="GetRedirectURL">
<http:operation location="/GetRedirectURL" />
<input>
<http:urlEncoded />
</input>
<output>
<mime:mimeXml part="Body" />
</output>
</operation>
</binding>
<binding name="PayplusHttpPost" type="s0:PayplusHttpPost">
<http:binding verb="POST" />
<operation name="Process">
<http:operation location="/Process" />
<input>
<mime:content type="application/x-www-form-urlencoded" />
</input>
<output>
<mime:mimeXml part="Body" />
</output>
</operation>
<operation name="GetStatus">
<http:operation location="/GetStatus" />
<input>
<mime:content type="application/x-www-form-urlencoded" />
</input>
<output>
<mime:mimeXml part="Body" />
</output>
</operation>
<operation name="GetRedirectURL">
<http:operation location="/GetRedirectURL" />
<input>
<mime:content type="application/x-www-form-urlencoded" />
</input>
<output>
<mime:mimeXml part="Body" />
</output>
</operation>
</binding>
<service name="Payplus">
<port name="PayplusSoap" binding="s0:PayplusSoap">
<soap:address location="https://secured.teamyehey.com/payplus/services/payplus.asmx" />
</port>
<port name="PayplusHttpGet" binding="s0:PayplusHttpGet">
<http:address location="https://secured.teamyehey.com/payplus/services/payplus.asmx" />
</port>
<port name="PayplusHttpPost" binding="s0:PayplusHttpPost">
<http:address location="https://secured.teamyehey.com/payplus/services/payplus.asmx" />
</port>
</service>
</definitions>
My code to access the above webservice (for Process method) is as follows (which is almost an exact copy from the sample code in JWSDP tutorial) :
String qnameService = "Payplus";
String qnamePort = "PayplusSoap";
String BODY_NAMESPACE_VALUE = "http://secure.yehey.com/2003/01/PayPlus";
String ENCODING_STYLE_PROPERTY = "javax.xml.rpc.encodingstyle.namespace.uri";
String NS_XSD = "http://www.w3.org/2001/XMLSchema";
String URI_ENCODING = "http://schemas.xmlsoap.org/soap/encoding/";
ServiceFactory factory = ServiceFactory.newInstance();
Service service = factory.createService(new QName(qnameService));
QName port = new QName(qnamePort);
Call call = service.createCall(port);
call.setTargetEndpointAddress(urlstring);
call.setProperty(Call.SOAPACTION_USE_PROPERTY, new Boolean(true));
call.setProperty(Call.SOAPACTION_URI_PROPERTY, "http://secure.yehey.com/2003/01/PayPlus/Process");
call.setProperty(ENCODING_STYLE_PROPERTY, URI_ENCODING);
QName QNAME_TYPE_STRING = new QName(NS_XSD, "string");
call.setReturnType(QNAME_TYPE_STRING);
call.setOperationName(new QName(BODY_NAMESPACE_VALUE, "Process"));
call.addParameter("inpData", QNAME_TYPE_STRING, ParameterMode.IN);
String[] params = { getProcessString() }; // getProcessString here returns the parameter required
String result = (String)call.invoke(params);
System.out.println(result);
The error that I keep on getting is this:
java.rmi.RemoteException: System.Web.Services.Protocols.SoapException: Server was unable to process request. ---> System.ArgumentNullException: Value cannot be null.
Parameter name: s
at System.IO.StringReader..ctor(String s)
at Payplus.Payplus.Process(String inpData)
Any help would be greatly appreciated. Thanks!

Answer 1

Are you using the JAXRPC implementation from java.sun.com
for your client invocations? IThis may be an implementation problem
and if you are not using the sun implementation, then I can not explain
the exception-
kathy