Consume a simple web service using mule - web-services

Question

I am trying to consume a public service using Mule + apache cxf. The service is available at http://www.html2xml.nl/Services/Calculator/Version1/Calculator.asmx?WSDL
This is a very simple service which does basic arithmetic operations. I am trying to call the operation "Add" here. My mule configuration is as below
<flow name="calculator" doc:name="calculator">
<stdio:inbound-endpoint system="IN" doc:name="STDIO"/>
<custom-transformer class="com.calculator.transformer.CalculatorClient" doc:name="Java"/>
<outbound-endpoint address="http://localhost:28081/service/Calculator?WSDL" exchange-pattern="request-response" doc:name="HTTP">
<cxf:jaxws-client clientClass="com.calculator.wsdl.Calculator" enableMuleSoapHeaders="true" port="CalculatorHttpPost" wsdlLocation="classpath:/wsdl/Calculator.wsdl" operation="Add">
<cxf:inInterceptors>
<spring:bean class="org.apache.cxf.interceptor.LoggingInInterceptor" />
</cxf:inInterceptors>
<cxf:outInterceptors>
<spring:bean class="org.apache.cxf.interceptor.LoggingOutInterceptor" />
</cxf:outInterceptors>
</cxf:jaxws-client>
</outbound-endpoint>
<transformer ref="CalculatorResponse" doc:name="Transformer Reference"/>
<mulexml:jaxb-object-to-xml-transformer name="CalculatortoXML" jaxbContext-ref="myJaxbCal" />
<stdio:outbound-endpoint system="OUT" doc:name="STDIO"/>
</flow>
Before calling the client class i added a transformer as below. This just sets the 2 numbers to add.
Code
package com.calculator.transformer;
import org.mule.api.MuleMessage;
import org.mule.api.transformer.TransformerException;
import org.mule.transformer.AbstractMessageTransformer;
import com.calculator.wsdl.Add;
public class CalculatorClient extends AbstractMessageTransformer {
#Override
public Object transformMessage(MuleMessage message, String outputEncoding)
throws TransformerException {
Add add= new Add();
add.setA(3);
add.setB(3);
return add;
}
}
Once i start mule i receive the error.Not sure what i am doing wrong.
ERROR 2014-01-16 01:09:46,237 [[weatherproject].calculator.stage1.02] org.mule.exception.DefaultMessagingExceptionStrategy:
Message : wrong number of arguments. Failed to route event via endpoint: org.mule.module.cxf.CxfOutboundMessageProcessor. Message payload is of type: Add
Code : MULE_ERROR--2
Exception stack is:
1. wrong number of arguments (java.lang.IllegalArgumentException)
sun.reflect.NativeMethodAccessorImpl:-2 (null)
2. wrong number of arguments. Failed to route event via endpoint: org.mule.module.cxf.CxfOutboundMessageProcessor. Message payload is of type: Add (org.mule.api.transport.DispatchException)
org.mule.module.cxf.CxfOutboundMessageProcessor:148 (http://www.mulesoft.org/docs/site/current3/apidocs/org/mule/api/transport/DispatchException.html)
Root Exception stack trace:
java.lang.IllegalArgumentException: wrong number of arguments
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
+ 3 more (set debug level logging or '-Dmule.verbose.exceptions=true' for everything)

Answer 1

you have mentioned http://localhost:28081/service/Calculator?WSDL as your address and I suppose it should be http://localhost:28081/service/Calculator .

Answer 2

This post helped me to solve the problem
Mule SOAP client wrapper as parameter instead of object array
By using the JAXB bindings as suggested CXF will generate the wrapper objects.