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AXIS XML calling .Net Web Service

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I am attempting to call a very basic "HelloWorld" .Net WS using AXIS. The XML submitted from my AXIS client looks like

<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<ns1:HelloWorld soapenv:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" xmlns:ns1="http://tempuri.org/">
<p_name xsi:type="xsd:string">John</p_name>

While this invokes the service it does not seem to pass the parameter in. I assumed this was because the p_name parameter was not qualified so when I manually modify the XML to

<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
<ns1:HelloWorld xmlns:ns1="http://tempuri.org/">
<ns1 _name xsi:type="xsd:string">John</ns1 _name>

and submit this via a SOAP Tool I have it works fine. My question is how do I qualify the parameter with the ns1: qualification in code?

Also do child entities not inherit the namespace of their parent? i.e. Should the p_name parameter need qualification? (obviously it does but I don't really understand why)

Any help greatly appreciated.

Java Source

* Main.java
* Created on 14 March 2006, 20:17
* To change this template, choose Tools | Template Manager
* and open the template in the editor.

package javaapplication1;

import org.apache.axis.client.Call;
import org.apache.axis.client.Service;
import javax.xml.namespace.QName;

* @author
public class Main {

/** Creates a new instance of Main */
public Main() {}

* @param args the command line arguments
public static void main(String [] args) {
try {
String endpoint = "http://localhost:8090/com.company.AXISInterOp/Service1.asmx";

Service service = new Service();
Call call = (Call) service.createCall();

call.setTargetEndpointAddress( new java.net.URL(endpoint) );

call.setOperationName(new QName("http://tempuri.org/", "HelloWorld") );


String ret = (String) call.invoke( new Object[] { new String("John") } );

System.out.println("Sent 'John!', got '" + ret + "'");
} catch (Exception e) {
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