RE: Error Calling .NET service

DeRemer, Bob Fri, 07 Apr 2006 11:40:21 -0700

Without digging into the details - whenever you get the message: "Object reference not set to an instance of an object" error, there's an object on the .NET side that is being used without having been constructed. This is most likely because the object either:

1) was not constructed with a call to new, or

2) it was not initialized via some other call (i.e. myobject = LoadInstance (); // returns a new instance to myobject)

So, if you haven't already, check the .NET code - ideally using Visual Studio and debug it. It should drop you right where the problem is, then you can backtrack to see where it didn't get initialized.

You can debug this in one of two ways - either directly from in the IDE if you have the .NET project, or by attaching to the ASP.NET worker process from the IDE.

-bob

From: Hoying, Ken [mailto:[EMAIL PROTECTED]
Sent: Friday, April 07, 2006 2:14 PM
To: [email protected]
Subject: Error Calling .NET service

I am trying to call a .NET web service and am running into some issues. I am getting the following error:

Server was unable to process request. ---&amp;gt; Object reference not set to an instance of an object.

The WSDL for the service is as follows:

<?xml version="1.0" encoding="utf-8"?>

<wsdl:definitions xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:tm="http://microsoft.com/wsdl/mime/textMatching/" xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/" xmlns:mime="http://schemas.xmlsoap.org/wsdl/mime/" xmlns:tns="http://www.relius.net/" xmlns:s="http://www.w3.org/2001/XMLSchema" xmlns:soap12="http://schemas.xmlsoap.org/wsdl/soap12/" xmlns:http="http://schemas.xmlsoap.org/wsdl/http/" targetNamespace="http://www.relius.net/" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/">

  <wsdl:types>

    <s:schema elementFormDefault="qualified" targetNamespace="http://www.relius.net/">

      <s:element name="GetPlanCounts">

        <s:complexType>

          <s:sequence>

            <s:element minOccurs="0" maxOccurs="1" name="PlansToCheck" type="tns:ArrayOfPlanInfo" />

          </s:sequence>

        </s:complexType>

      </s:element>

      <s:complexType name="ArrayOfPlanInfo">

        <s:sequence>

          <s:element minOccurs="0" maxOccurs="unbounded" name="PlanInfo" nillable="true" type="tns:PlanInfo" />

        </s:sequence>

      </s:complexType>

      <s:complexType name="PlanInfo">

        <s:sequence>

          <s:element minOccurs="0" maxOccurs="1" name="PlanId" type="s:string" />

          <s:element minOccurs="1" maxOccurs="1" name="Year" type="s:int" />

        </s:sequence>

      </s:complexType>

      <s:element name="GetPlanCountsResponse">

        <s:complexType>

          <s:sequence>

            <s:element minOccurs="0" maxOccurs="1" name="GetPlanCountsResult" type="tns:ArrayOfNotice" />

          </s:sequence>

        </s:complexType>

      </s:element>

      <s:complexType name="ArrayOfNotice">

        <s:sequence>

          <s:element minOccurs="0" maxOccurs="unbounded" name="Notice" nillable="true" type="tns:Notice" />

        </s:sequence>

      </s:complexType>

      <s:complexType name="Notice">

        <s:attribute name="Type" type="s:string" />

        <s:attribute name="Number" type="s:int" use="required" />

      </s:complexType>

    </s:schema>

  </wsdl:types>

  <wsdl:message name="GetPlanCountsSoapIn">

    <wsdl:part name="parameters" element="tns:GetPlanCounts" />

  </wsdl:message>

  <wsdl:message name="GetPlanCountsSoapOut">

    <wsdl:part name="parameters" element="tns:GetPlanCountsResponse" />

  </wsdl:message>

  <wsdl:portType name="CrefServicesSoap">

    <wsdl:operation name="GetPlanCounts">

      <wsdl:input message="tns:GetPlanCountsSoapIn" />

      <wsdl:output message="tns:GetPlanCountsSoapOut" />

    </wsdl:operation>

  </wsdl:portType>

  <wsdl:binding name="CrefServicesSoap" type="tns:CrefServicesSoap">

    <soap:binding transport="http://schemas.xmlsoap.org/soap/http" />

    <wsdl:operation name="GetPlanCounts">

      <soap:operation soapAction="http://www.relius.net/GetPlanCounts" style="document" />

      <wsdl:input>

        <soap:body use="literal" />

      </wsdl:input>

      <wsdl:output>

        <soap:body use="literal" />

      </wsdl:output>

    </wsdl:operation>

  </wsdl:binding>

  <wsdl:binding name="CrefServicesSoap12" type="tns:CrefServicesSoap">

    <soap12:binding transport="http://schemas.xmlsoap.org/soap/http" />

    <wsdl:operation name="GetPlanCounts">

      <soap12:operation soapAction="http://www.relius.net/GetPlanCounts" style="document" />

      <wsdl:input>

        <soap12:body use="literal" />

      </wsdl:input>

      <wsdl:output>

        <soap12:body use="literal" />

      </wsdl:output>

    </wsdl:operation>

  </wsdl:binding>

  <wsdl:service name="CrefServices">

    <wsdl:port name="CrefServicesSoap" binding="tns:CrefServicesSoap">

      <soap:address location="http://chast1reliuswc1/RWCRelius5500/crefservices.asmx" />

    </wsdl:port>

    <wsdl:port name="CrefServicesSoap12" binding="tns:CrefServicesSoap12">

      <soap12:address location="http://chast1reliuswc1/RWCRelius5500/crefservices.asmx" />

    </wsdl:port>

  </wsdl:service>

</wsdl:definitions>

I am sending the following request to the web service using the Axis client:

POST /RWCRelius5500/crefservices.asmx?WSDL HTTP/1.0

Content-Type: text/xml; charset=utf-8

Accept: application/soap+xml, application/dime, multipart/related, text/*

User-Agent: Axis/1.2.1

Host: chast1reliuswc1:9001

Cache-Control: no-cache

Pragma: no-cache

SOAPAction: "http://www.relius.net/GetPlanCounts"

Content-Length: 679

<?xml version="1.0" encoding="UTF-8"?><soapenv:Envelope xmlns:soapenv="http://www.w3.org/2003/05/soap-envelope" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">

<soapenv:Body>

</PlanInfo>

</PlanInfo>

</PlansToCheck>

</GetPlanCounts>

</soapenv:Body>

</soapenv:Envelope>

I am getting back the following response:

HTTP/1.1 500 Internal Server Error

Connection: close

Date: Fri, 07 Apr 2006 18:00:29 GMT

Server: Microsoft-IIS/6.0

X-Powered-By: ASP.NET

X-AspNet-Version: 2.0.50727

Cache-Control: private

Content-Type: application/soap+xml; charset=utf-8

Content-Length: 508

<?xml version="1.0" encoding="utf-8"?><soap:Envelope xmlns:soap="http://www.w3.org/2003/05/soap-envelope" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"><soap:Body><soap:Fault><soap:Code><soap:Value>soap:Receiver</soap:Value></soap:Code><soap:Reason><soap:Text xml:lang="en">Server was unable to process request. ---> Object reference not set to an instance of an object.</soap:Text></soap:Reason><soap:Detail /></soap:Fault></soap:Body></soap:Envelope>

Any ideas? Any help would be gratefully appreciated.

Thank you,
Ken Hoying



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RE: Error Calling .NET service

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