payload source of response with spring ws MockWebServiceClient

Question

I'm using spring-ws 2.0.2 and spring-ws-test to run integration tests of my SOAP server. I'm using an approach exactly like that from http://static.springsource.org/spring-ws/site/apidocs/org/springframework/ws/test/server/MockWebServiceClient.html

Here's the code I'm running with the expected response XML omitted for brevity and because it's not relevant to the question.

I'd like to be able to see the xml in the response payload but can't figure out how to get access to it. If I set a breakpoint after response is set and inspect it I can see that it has a private messageContext.response of type SaajSoapMessage but I can't figure out how to access it or if there's a better way to see the response XML.

package com.example.integration;                                                                     

import static org.springframework.ws.test.server.RequestCreators.*;                                 
import static org.springframework.ws.test.server.ResponseMatchers.*;                                
import static org.testng.AssertJUnit.*;                                                             

import javax.xml.transform.Source;                                                                  

import org.springframework.beans.factory.annotation.Autowired;                                      
import org.springframework.context.ApplicationContext;                                              
import org.springframework.ws.test.server.MockWebServiceClient;                                     
import org.springframework.ws.test.server.ResponseActions;                                          
import org.springframework.xml.transform.StringSource;                                              
import org.testng.annotations.BeforeClass;                                                          
import org.testng.annotations.Test;                                                                 

@ContextConfiguration(locations={"/transaction-test-context.xml", "/spring-web-services-servlet.xml"})
public class BaseWebServiceIntegrationTest {                          

    @Autowired
    private ApplicationContext applicationContext;

    private MockWebServiceClient mockClient;

    @BeforeClass(groups="integration")
    public void createClient() {
        assertNotNull("expected applicationContext to be non-null", applicationContext);
        mockClient = MockWebServiceClient.createClient(applicationContext);
    }

    @Test(groups="integration")
    public void proofOfConcept() {

        assertNotNull("expected mockClient to be non-null", mockClient);

        Source requestPayload = new StringSource(
                "<s0:ListDevicesRequest " +
                "xmlns:soapenc='http://schemas.xmlsoap.org/soap/encoding/' " +
                "xmlns:xs='http://www.w3.org/2001/XMLSchema' " +
                "xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' " +
                "xmlns:s0='urn:com:example:xmlschema:service:v1.1:DeviceManager.xsd'>" +
                    "<s0:MacID>66:bb:be:ee:00:00:01:00</s0:MacID>" +
                "</s0:ListDevicesRequest>"
                );

        Source responsePayload = new StringSource("<!-- response omitted for the post, not relevant -->");

        ResponseActions response = mockClient.sendRequest(withPayload(requestPayload));
        response.andExpect(noFault())
                .andExpect(payload(responsePayload));

    }
}

edited to add the application context file as requested. we have a few but the one below is the soap-specific one.

<?xml version="1.0"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:p="http://www.springframework.org/schema/p"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:sec="http://www.springframework.org/schema/security"
       xsi:schemaLocation="
        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
        http://www.springframework.org/schema/security http://www.springframework.org/schema/security/spring-security-3.0.xsd
        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd">

    <sec:global-method-security pre-post-annotations="disabled" jsr250-annotations="disabled" />

    <tx:annotation-driven/>
    <context:component-scan base-package="com.example.integration"/>
    <context:component-scan base-package="com.example.signal"/>

    <bean id="validator" class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean"/>

    <bean id="faultService" class="com.example.webservice.fault.FaultService"/>

    <bean id="soapDeviceService" class="com.example.webservice.device.SoapDeviceServiceImpl"/>


    <!-- 1.1 Endpoints -->
    <bean id="deviceManagerEndpoint_v1_1" class="com.example.webservice.spring.DeviceManagerEndpoint">
        <property name="soapDeviceService" ref="soapDeviceService"/>
    </bean>



    <bean class="com.example.webservice.spring.PayloadMethodMarshallingEndpointAdapter">
        <property name="marshaller" ref="marshaller"/>
        <property name="unmarshaller" ref="marshaller"/>
    </bean>
    <bean id="marshaller" class="org.springframework.oxm.jaxb.Jaxb2Marshaller">
        <property name="mtomEnabled" value="false"/>
        <property name="contextPath" value="com.example.xmlschema.service.v1_0.devicemanager"/>
    </bean>

    <bean class="org.springframework.ws.server.endpoint.mapping.PayloadRootAnnotationMethodEndpointMapping">
        <property name="interceptors">
            <list>
                <bean class="com.example.webservice.interceptor.LoggingInterceptor"/>
                <ref bean="validatingInterceptor"/>
            </list>
        </property>
    </bean>

    <bean id="validatingInterceptor" class="org.springframework.ws.soap.server.endpoint.interceptor.PayloadValidatingInterceptor">
        <property name="schemas">
            <list>
                <value>/WEB-INF/wsdl/*Types_v*.xsd</value>
            </list>
        </property>
        <property name="validateRequest" value="true"/>
        <property name="validateResponse" value="true"/>
    </bean>

    <bean class="com.example.webservice.spring.SpringWebserviceFaultMappingExceptionResolver">
        <property name="order" value="1"/>
        <property name="marshaller" ref="marshaller"/>
    </bean>

</beans>

Answer 1

Ok, 4 years too late, but here is my answer, which I am both proud and ashamed of :-

.andExpect(
    new ResponseMatcher()
    {
        @Override
        public void match(WebServiceMessage request, WebServiceMessage response)
            throws IOException, AssertionError
        {
            response.writeTo(System.out);
        }
    })

And since Java 8:

.andExpect((request, response) -> response.writeTo(System.out))