WebServiceTransportException: Unauthorized [401] in Spring-WS

<bean id="webServiceTemplate" class="org.springframework.ws.client.core.WebServiceTemplate">
    <constructor-arg ref="messageFactory"/>
    <property name="messageSender">
        <bean class="org.springframework.ws.transport.http.CommonsHttpMessageSender">
            <property name="credentials">
                <bean class="org.apache.commons.httpclient.UsernamePasswordCredentials">
                    <constructor-arg value="john"/>
                    <constructor-arg value="secret"/>
                </bean>
            </property>
        </bean>
    </property>
</bean>

public List<String> getAll() {
    List<String> carTypes = new ArrayList<String>();

    try {
        Source source = new ResourceSource(request);
        JDOMResult result = new JDOMResult();


        SaajSoapMessageFactory soapMessageFactory = new SaajSoapMessageFactory(MessageFactory.newInstance());

        WebServiceTemplate template = new WebServiceTemplate(soapMessageFactory);

        HttpClientParams clientParams = new HttpClientParams();
        clientParams.setSoTimeout(60000);
        clientParams.setConnectionManagerTimeout(60000);
        clientParams.setAuthenticationPreemptive(true);

        HttpClient client = new HttpClient(clientParams);
        client.getState().setCredentials(AuthScope.ANY,
                new UsernamePasswordCredentials("username", "password"));

        CommonsHttpMessageSender messageSender = new CommonsHttpMessageSender(client);

        template.setMessageSender(messageSender);
        template.sendSourceAndReceiveToResult(SERVICE_URI,
                source, result);

        // Handle the XML

    } catch (IOException e) {
        throw new RuntimeException(e);
    } catch (SOAPException e) {
        throw new RuntimeException(e);
    }

    return carTypes;
}

<constructor-arg value="john"/>
<constructor-arg value="secret"/>

<property name="userName" value="john" />
<property name="password" value="secret" />

public MyHttpClient(HttpClientParams params, UsernamePasswordCredentials usernamePasswordCredentials) {
        super(params);
        getState().setCredentials(AuthScope.ANY, usernamePasswordCredentials);
    }