Hi,
I have recently ran into this problem and I am confident it is a WSDL2Java
bug. When a WSDL has an operation without argument, i.e., its input is an
empty message, the generated Stub class has this bug: it declares an
envelope variable initlaized with null, and then doesn't assign an empty
body to it.
To fix this, add this line immediately after env is declared in the
corresponding service operation method stub:
env=toEnvelope(getFactory(_operationClient.getOptions().getSoapVersionURI()));
This should solve your problem.
Thanks,
-Nirmit
"Derek"
<[EMAIL PROTECTED]
orp.com> To
<[email protected]>
08/01/2006 02:58 cc
PM
Subject
RE: envelop null. how to invoke an
Please respond to axis 2 method?
[EMAIL PROTECTED]
he.org
Simon:
Generated code might legitimately throw either IllegalArgumentExceptions or
IllegalStateExceptions with appropriately descriptive error messages, but
if
it's throwing a descriptionless NullPointerException, it has a bug in it.
Even if you eventually find a workaround, please file a JIRA for this issue
so that the code gets fixed.
Thanks.
Derek
> -----Original Message-----
> From: Simon West [mailto:[EMAIL PROTECTED]
> Sent: Tuesday, August 01, 2006 11:40 AM
> To: [email protected]
> Subject: Re: envelop null. how to invoke an axis 2 method?
>
>
> Thanks for the fast answer, but its the same problem. I added:
>
> <wsdl:message name="GetCategoriesRequest"/>
>
> to my wsdl. But an invokation produces:
>
> java.lang.NullPointerException
> at
> org.apache.axis2.context.MessageContext.setEnvelope(MessageCon
> text.java:681)
> at
> org.apache.axis2.ProductStub.GetCategories(ProductStub.java:119)
> at ProductTest.main(ProductTest.java:10)
>
> Here is the new WSDL again:
>
> <wsdl:definitions xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/";
> xmlns:tns="http://www.example.org/Product/";
> xmlns:soap12="http://schemas.xmlsoap.org/wsdl/soap12/";
> xmlns:http="http://schemas.xmlsoap.org/wsdl/http/";
> xmlns:mime="http://schemas.xmlsoap.org/wsdl/mime/";
> xmlns:xsd="http://www.w3.org/2001/XMLSchema";
> xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/";
> targetNamespace="http://www.example.org/Product/";>
> <wsdl:types>
> <xsd:schema
> targetNamespace="http://www.example.org/Product/";
> elementFormDefault="unqualified"
> attributeFormDefault="unqualified">
> <xsd:element name="Categories">
> <xsd:complexType>
> <xsd:sequence>
>
<xsd:element
> type="xsd:string" name="Category"
>
> maxOccurs="unbounded" />
>
</xsd:sequence>
> </xsd:complexType>
> </xsd:element>
> </xsd:schema>
> </wsdl:types>
> <wsdl:message name="GetCategoriesRequest" />
> <wsdl:message name="GetCategoriesResponse">
> <wsdl:part element="tns:Categories" name="part1"
/>
> </wsdl:message>
> <wsdl:portType name="ProductPortType">
> <wsdl:operation name="GetCategories">
> <wsdl:input
> message="tns:GetCategoriesRequest" />
> <wsdl:output
> message="tns:GetCategoriesResponse" />
> </wsdl:operation>
> </wsdl:portType>
> <wsdl:binding type="tns:ProductPortType"
> name="ProductSOAP11Binding">
> <soap:binding style="document"
>
> transport="http://schemas.xmlsoap.org/soap/http"; />
> <wsdl:operation name="GetCategories">
> <soap:operation style="document"
>
> soapAction="http://www.example.org/Product/GetCategories"; />
> <wsdl:input>
> <soap:body
> namespace="http://www.example.org/Product/";
> use="literal"
/>
> </wsdl:input>
> <wsdl:output>
> <soap:body
> namespace="http://www.example.org/Product/";
> use="literal"
/>
> </wsdl:output>
> </wsdl:operation>
> </wsdl:binding>
> <wsdl:binding type="tns:ProductPortType"
> name="ProductSOAP12Binding">
> <soap12:binding style="document"
>
> transport="http://schemas.xmlsoap.org/soap/http"; />
> <wsdl:operation name="GetCategories">
> <soap12:operation style="document"
>
> soapAction="http://www.example.org/Product/GetCategories"; />
> <wsdl:input>
> <soap12:body
> namespace="http://www.example.org/Product/";
> use="literal"
/>
> </wsdl:input>
> <wsdl:output>
> <soap12:body
> namespace="http://www.example.org/Product/";
> use="literal"
/>
> </wsdl:output>
> </wsdl:operation>
> </wsdl:binding>
> <wsdl:service name="Product">
> <wsdl:port binding="tns:ProductSOAP11Binding"
> name="ProductSOAP11port0">
> <soap:address
>
> location="http://localhost:8080/axis2/services/Product"; />
> </wsdl:port>
> <wsdl:port binding="tns:ProductSOAP12Binding"
> name="ProductSOAP12port0">
> <soap12:address
>
> location="http://localhost:8080/axis2/services/Product"; />
> </wsdl:port>
> </wsdl:service>
> </wsdl:definitions>
>
> Simon
>
>
> > -----Ursprüngliche Nachricht-----
> > Von: [email protected]
> > Gesendet: 01.08.06 19:28:28
> > An: [email protected]
> > Betreff: Re: envelop null. how to invoke an axis 2 method?
>
>
> > You must define a <wsdl:message> for your request message,
> even if you
> > have no arguments. In that case, you just define an empty message,
> > e.g.,
> >
> > <wsdl:message name="GetCategoriesRequest"/>
> >
> > Anne
> >
> >
> > On 8/1/06, Simon West <[EMAIL PROTECTED]> wrote:
> > > Hello,
> > > i build my first webservice and i got a big problem. I
> modified the
> > > \samples\wsdl\perf.wsdl. I want to make a method which has no
> > > arguments an retrieves an list of strings. I generated
> the classes
> > > and deployed the service. Now the problem is that i cant
> invoke my
> > > method. I get this exception:
> > >
> > > public static void main(String[] args) {
> > > try {
> > > ProductStub ps = new ProductStub();
> > > ps.GetCategories();
> > > } catch (Exception e) {
> > > e.printStackTrace();
> > > }
> > > }
> > >
> > > produces
> > >
> > > java.lang.NullPointerException
> > > at
> org.apache.axis2.context.MessageContext.setEnvelope(MessageCon
> text.java:681)
> > > at
> testclient.org.apache.axis2.ProductStub.GetCategories(ProductS
> tub.java:109)
> > > at testclient.ProductTest.main(ProductTest.java:14)
> > >
> > > But i have already implemented the server side as:
> > >
> > > public class ProductSkeleton {
> > >
> > > public org.example.www.product.Categories GetCategories()
> > > {
> > > Categories c = new Categories();
> > > c.addCategory("hello");
> > > c.addCategory("cya");
> > > return c;
> > > }
> > > }
> > >
> > > The wsdl is a little bit longer but maybe helpfull:
> > >
> > > <?xml version="1.0" encoding="UTF-8"?>
> > > <wsdl:definitions
> xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/";
> > > xmlns:tns="http://www.example.org/Product/";
> > > xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/";
> > > xmlns:xsd="http://www.w3.org/2001/XMLSchema";
> name="Product"
> > > targetNamespace="http://www.example.org/Product/";>
> > > <wsdl:types>
> > > <xsd:schema
> targetNamespace="http://www.example.org/Product/";>
> > > <xsd:element name="Categories">
> > > <xsd:complexType>
> > > <xsd:sequence>
> > >
> <xsd:element name="Category" type="xsd:string"
> > >
> minOccurs="1" maxOccurs="unbounded">
> > > </xsd:element>
> > > </xsd:sequence>
> > > </xsd:complexType>
> > > </xsd:element>
> > > </xsd:schema>
> > > </wsdl:types>
> > > <wsdl:message name="GetCategoriesResponse">
> > > <wsdl:part element="tns:Categories"
> > > name="GetCategoriesResponse" />
> > > </wsdl:message>
> > > <wsdl:portType name="Product">
> > > <wsdl:operation name="GetCategories">
> > > <wsdl:input
> message="tns:GetCategoriesRequest" />
> > > <wsdl:output
> message="tns:GetCategoriesResponse" />
> > > </wsdl:operation>
> > > </wsdl:portType>
> > > <wsdl:binding name="ProductSOAP" type="tns:Product">
> > > <soap:binding style="document"
> > >
> transport="http://schemas.xmlsoap.org/soap/http"; />
> > > <wsdl:operation name="GetCategories">
> > > <soap:operation
> > >
> soapAction="http://www.example.org/Product/GetCategories"; />
> > > <wsdl:input>
> > > <soap:body
> parts="GetCategoriesRequest" use="literal" />
> > > </wsdl:input>
> > > <wsdl:output>
> > > <soap:body
> parts="GetCategoriesResponse" use="literal" />
> > > </wsdl:output>
> > > </wsdl:operation>
> > > </wsdl:binding>
> > > <wsdl:service name="Product">
> > > <wsdl:port binding="tns:ProductSOAP"
> name="ProductSOAP">
> > > <soap:address
> location="http://www.example.org/"; />
> > > </wsdl:port>
> > > </wsdl:service>
> > > </wsdl:definitions>
> > >
> > > Maybe someone can help me how to invoke this method?
> > >
> > > Best regards
> > > Simon
> > >
> ____________________________________________________________________
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> > >
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> > >
> >
> >
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