Use the simpliest web server ever

[Remi Desreumaux]

Well not the simpliest but very easy

I want to be able to add two integers.
Here is my wsdl : http://intevit.com/ws/ex4/WebService.wsdl

My java code starts with :

Service1Stub stub = new Service1Stub("http://intevit.com/ws/ex4/WebService.wsdl");

How do I define the callbackhandler?
I guess I have to do that later :

	stub.startadd(a, callback);

[shivendra tripathi]

The callback mechanism is used for asynchronous call and depends on the SOAP stack you are using.
In case of axis2 you have to pass callback handler class as second argument while calling an operation, same as mentioned in your code. You need to implement abstract callback handler class generated by axis2 as well, to pass it as second argument.

[Remi Desreumaux]

and nothing special in the inmplementation ? Just an empty class?

[shivendra tripathi]

You may implement onComplete, onError method defined in abstract class, based on what you want to do on getting result/error form remote service.

[Remi Desreumaux]

shivendra tripathi wrote:The callback mechanism is used for asynchronous call and depends on the SOAP stack you are using.
In case of axis2 you have to pass callback handler class as second argument while calling an operation, same as mentioned in your code. You need to implement abstract callback handler class generated by axis2 as well, to pass it as second argument.

Hi, I can see an example right here of implementation of a callbackhandler, it seems complicated.
How do I can do to not use the async mod? thank you.

Here is my callbackhandletimpl :

package ws.example;

public class UserServiceCallBackHandlerImpl extends UserServiceCallbackHandler {

	
	
}

and my client :

try {
			Service1Stub stub = new Service1Stub("http://intevit.com/ws/ex4/WebService.wsdl");
			
			Add a = new Add();
			a.setA(1);
			a.setB(4);
			
			stub._getServiceClient();
			Service1CallbackHandlerImpl si = new Service1CallbackHandlerImpl();
			stub.startadd(a, si);
			
			System.out.println(	"");
		
	
		} catch (AxisFault e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}

I still wonder how to display the result please.

this seems much more complicated than a .net client with the same webservice :

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace test_WS_distant
{
    class Program
    {
        static void Main(string[] args)
        {
            Math_Service.MathServiceClient math = new test_WS_distant.Math_Service.MathServiceClient();

            math.Open();

            Console.WriteLine(math.Add(2, 2));
            Console.WriteLine(math.Substract(4, 2));
            Console.Read();
            math.Close();
        }
    }
}

[Remi Desreumaux]

I read some documentation :
http://ws.apache.org/axis2/1_1_1/userguide-creatingclients.html#choosingclient

And I regenerated the stub calling :

C:\axis2-1.5.1-bin\axis2-1.5.1\bin>wsdl2java -uri http://intevit.com/ws/ex4/WebS
ervice.wsdl -p org.apache.axis2.axis2userguide -d adb -s
Using AXIS2_HOME: C:\axis2-1.5.1-bin\axis2-1.5.1
Using JAVA_HOME: C:\j\
Retrieving document at 'http://intevit.com/ws/ex4/WebService.wsdl'.
C:\axis2-1.5.1-bin\axis2-1.5.1\bin>wsdl2java -uri http://intevit.com/ws/ex4/WebS
ervice.wsdl -p org.apache.axis2.axis2userguide -d adb -s

Then in my client :

try {
			Service1Stub stub = new Service1Stub("http://intevit.com/ws/ex4/WebService.wsdl");
			Add a = new Add();
			a.setA(1);
			a.setB(2);
			System.out.println(stub.add(a).getResultAdd());
			

	        } catch(Exception e){
	            e.printStackTrace();
	            System.out.println("\n\n\n");
	        }

Unfortunately :

at the execution :

org.apache.axis2.AxisFault: First Element must contain the local name, Envelope , but found definitions
at org.apache.axis2.AxisFault.makeFault(AxisFault.java:430)
at org.apache.axis2.transport.TransportUtils.createSOAPMessage(TransportUtils.java:118)
at org.apache.axis2.transport.TransportUtils.createSOAPMessage(TransportUtils.java:67)
at org.apache.axis2.description.OutInAxisOperationClient.handleResponse(OutInAxisOperation.java:354)
at org.apache.axis2.description.OutInAxisOperationClient.send(OutInAxisOperation.java:417)
at org.apache.axis2.description.OutInAxisOperationClient.executeImpl(OutInAxisOperation.java:229)
at org.apache.axis2.client.OperationClient.execute(OperationClient.java:165)
at org.apache.axis2.axis2userguide.Service1Stub.add(Service1Stub.java:312)
at namespace.webservice._new.Client.main(Client.java:24)
Caused by: org.apache.axiom.soap.SOAPProcessingException: First Element must contain the local name, Envelope , but found definitions
at org.apache.axiom.soap.impl.builder.StAXSOAPModelBuilder.constructNode(StAXSOAPModelBuilder.java:267)
at org.apache.axiom.soap.impl.builder.StAXSOAPModelBuilder.createOMElement(StAXSOAPModelBuilder.java:224)
at org.apache.axiom.soap.impl.builder.StAXSOAPModelBuilder.createNextOMElement(StAXSOAPModelBuilder.java:196)
at org.apache.axiom.om.impl.builder.StAXOMBuilder.next(StAXOMBuilder.java:207)
at org.apache.axiom.soap.impl.builder.StAXSOAPModelBuilder.getSOAPEnvelope(StAXSOAPModelBuilder.java:161)
at org.apache.axiom.soap.impl.builder.StAXSOAPModelBuilder.<init>(StAXSOAPModelBuilder.java:110)
at org.apache.axis2.builder.BuilderUtil.getSOAPBuilder(BuilderUtil.java:682)
at org.apache.axis2.transport.TransportUtils.createDocumentElement(TransportUtils.java:210)
at org.apache.axis2.transport.TransportUtils.createSOAPMessage(TransportUtils.java:140)
at org.apache.axis2.transport.TransportUtils.createSOAPMessage(TransportUtils.java:103)
... 7 more

thanks for help!

[Remi Desreumaux]

Using tcp/ip monitor , I got this as request :

<?xml version='1.0' encoding='UTF-8'?><soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"><soapenv:Body><ns1:Add xmlns:ns1="http://new.webservice.namespace"><a>1</a><b>2</b></ns1:Add></soapenv:Body></soapenv:Envelope>

This looks good but the response is the wsdl itself ! Why ?

<?xml version="1.0" encoding="UTF-8"?>
<!-- edited with XMLSpy v2011 (http://www.altova.com) by plop (plop) -->
<wsdl:definitions xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:http="http://schemas.xmlsoap.org/wsdl/http/" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:soapenc="http://schemas.xmlsoap.org/soap/litteral/" xmlns:mime="http://schemas.xmlsoap.org/wsdl/mime/" xmlns:tns="http://new.webservice.namespace" xmlns:soap12="http://schemas.xmlsoap.org/wsdl/soap12/" targetNamespace="http://new.webservice.namespace">
	<wsdl:types>
		<xs:schema targetNamespace="http://new.webservice.namespace" elementFormDefault="qualified"/>
	</wsdl:types>
	<wsdl:message name="AddRequest">
		<wsdl:part name="a" type="xs:int"/>
		<wsdl:part name="b" type="xs:int"/>
	</wsdl:message>
	<wsdl:message name="AddResponse">
		<wsdl:part name="resultAdd" type="xs:int"/>
	</wsdl:message>
	<wsdl:message name="SubstractRequest">
		<wsdl:part name="c" type="xs:int"/>
		<wsdl:part name="d" type="xs:int"/>
	</wsdl:message>
	<wsdl:message name="SubstractResponse">
		<wsdl:part name="resultSubstract" type="xs:int"/>
	</wsdl:message>
	<wsdl:portType name="MathService">
		<wsdl:operation name="Add">
			<wsdl:input message="tns:AddRequest"/>
			<wsdl:output message="tns:AddResponse"/>
		</wsdl:operation>
		<wsdl:operation name="Substract">
			<wsdl:input message="tns:SubstractRequest"/>
			<wsdl:output message="tns:SubstractResponse"/>
		</wsdl:operation>
	</wsdl:portType>
	<wsdl:binding name="BasicHttpBinding_Math" type="tns:MathService">
		<soap:binding transport="http://schemas.xmlsoap.org/soap/http" style="rpc"/>
		<wsdl:operation name="Add">
			<soap:operation soapAction="urn:#http://http://localhost/ws/ex4/Add"/>
			<wsdl:input>
				<soap:body use="encoded" encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"/>
			</wsdl:input>
			<wsdl:output>
				<soap:body use="encoded" encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"/>
			</wsdl:output>
		</wsdl:operation>
		<wsdl:operation name="Substract">
			<soap:operation soapAction="urn:#http://localhost/ws/ex4/Substract"/>
			<wsdl:input>
				<soap:body use="encoded" encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"/>
			</wsdl:input>
			<wsdl:output>
				<soap:body use="encoded" encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"/>
			</wsdl:output>
		</wsdl:operation>
	</wsdl:binding>
	<wsdl:service name="Service1">
		<wsdl:port name="BasicHttpBinding_Math" binding="tns:BasicHttpBinding_Math">
			<soap:address location="http://localhost/ws/ex4/Server.php"/>
		</wsdl:port>
	</wsdl:service>
</wsdl:definitions>

As a reminder, my client 's code is :

	Service1Stub stub = new Service1Stub("http://localhost:8181/ws/ex4/WebService.wsdl");
			Service1Stub.Add add = new Service1Stub.Add ();
		
			add.setA(1);
			add.setB(2);
				System.out.println(stub.add(add).getResultAdd());
	
			Service1Stub.AddResponse addresponse = new Service1Stub.AddResponse ();
				
			

	        } catch(Exception e){
	            e.printStackTrace();
	            System.out.println("\n\n\n");
	        }