Spring-WS webservice with MTOM attachment - Hello world test

Question

I am trying to create a simple Spring webservice which when called returns a file attachment as part of the SOAP response. The Enpoint class is shown below:

And finally the endpoint

@PayloadRoot(namespace="http://ws.mypackage.com", localPart="downloadMessageRequest")
    @ResponsePayload
    public JAXBElement<DownloadResponseType> invoke(@RequestPayload DownloadMessageRequest req) throws Exception  {

        DownloadResponseType response = new DownloadResponseType();
        DownloadResponseType.PayLoad payload = new DownloadResponseType.PayLoad();          

        javax.activation.DataHandler dataHandler = new javax.activation.DataHandler(new FileDataSource("c:\\temp\\maven-feather.png"));
        payload.setMessagePayLoad(dataHandler);
        response.setPayLoad(payload);

        return objectFactory.createDownloadMessageResponse(response);

    }

I would like the response to include the file as an attachement similar to the following response:

Content-Type: multipart/related; boundary=MIMEBoundary4A7AE55984E7438034;
                         type="application/xop+xml"; start="<0.09BC7F4BE2E4D3EF1B@apache.org>";
                         start-info="text/xml; charset=utf-8"

--MIMEBoundary4A7AE55984E7438034
content-type: application/xop+xml; charset=utf-8; type="application/soap+xml;"
content-transfer-encoding: binary
content-id: <0.09BC7F4BE2E4D3EF1B@apache.org>

<?xml version='1.0' encoding='utf-8'?>
<soapenv:Envelope xmlns:soapenv="...."....>
  ........
         <xop:Include href="cid:1.A91D6D2E3D7AC4D580@apache.org" 
                        xmlns:xop="http://www.w3.org/2004/08/xop/include">
         </xop:Include>
  ........

</soapenv:Envelope>
--MIMEBoundary4A7AE55984E7438034
content-type: application/octet-stream
content-transfer-encoding: binary
content-id: <1.A91D6D2E3D7AC4D580@apache.org>

Binary Data.....
--MIMEBoundary4A7AE55984E7438034--

I have tried to follow the documentation and the sample code in the spring-ws samples and for some reason the output i am getting is always this (i.e. the base64 data is not an attachement.

HTTP/1.1 200 OK
Server: Apache-Coyote/1.1
Accept: text/xml, text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2
SOAPAction: ""
Content-Type: text/xml;charset=utf-8
Content-Length: 4750
Date: Tue, 03 Jul 2012 17:05:21 GMT

<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"><SOAP-ENV:Header/><SOAP-ENV:Body><ns2:downloadMessageResponse xmlns:ns2="http://ws.mypackage.com"><ns2:payLoad><ns2:messagePayLoad>....iVBORw0KGgoAAAANSUhEUgAAAFoAAAAeCyAAAAAElFTkSuQmCC....</ns2:messagePayLoad></ns2:payLoad></ns2:downloadMessageResponse></SOAP-ENV:Body></SOAP-ENV:Envelope>

As you can see, the payload is not an attachment. Here is how i have configured my application:

web.xml

<context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>
        /WEB-INF/app-config.xml
        </param-value>
    </context-param>

    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <servlet>
        <servlet-name>webservice</servlet-name>
        <servlet-class>org.springframework.ws.transport.http.MessageDispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>/WEB-INF/ws-config.xml</param-value>
        </init-param>
    </servlet>

ws-config.xml

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:ws="http://www.springframework.org/schema/web-services"
    xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="http://www.springframework.org/schema/web-services 
    http://www.springframework.org/schema/web-services/web-services-2.0.xsd
        http://www.springframework.org/schema/beans 
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context 
        http://www.springframework.org/schema/context/spring-context-3.0.xsd">

    <context:component-scan base-package="com.mypackage"/>

    <ws:annotation-driven/>


    <ws:dynamic-wsdl id="serviceDefinition" portTypeName="myService"
                     locationUri="http://localhost:8080/springWsTest/webservice">
        <ws:xsd location="/WEB-INF/schemas/downloadMessageRequest.xsd"/>
    </ws:dynamic-wsdl>

    <bean id="marshaller" class="org.springframework.oxm.jaxb.Jaxb2Marshaller">
        <property name="contextPath" value="com.mypackage.ws"/>
        <property name="mtomEnabled" value="true"/>
    </bean> 
</beans>

downloadMessageRequest.xsd schema file

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" 
xmlns:m="http://ws.mypackage.com" 
xmlns:xmime="http://www.w3.org/2005/05/xmlmime" elementFormDefault="qualified"
targetNamespace="http://ws.mypackage.com" 
attributeFormDefault="unqualified"> 

    <xs:element name="downloadMessageRequest">
        <xs:complexType/>
    </xs:element>

    <xs:element name="downloadMessageResponse" type="m:downloadResponseType" />

    <xs:complexType name="downloadResponseType">
            <xs:sequence>
                <xs:element name="requestName" type="xs:string"/>
                <xs:element name="payLoad">
                    <xs:complexType>
                        <xs:sequence>
                            <xs:element name="messagePayLoad" type="xs:base64Binary" xmime:expectedContentTypes="application/octet-stream"/>
                        </xs:sequence>
                    </xs:complexType>
                </xs:element>
            </xs:sequence>
     </xs:complexType>


     <xs:element name="localDTMRequest">
        <xs:complexType/>
    </xs:element>

    <xs:element name="localDTMResponse">
        <xs:complexType>        
            <xs:sequence>
                <xs:element name="localDTM" type="xs:dateTime"/>
            </xs:sequence>          
        </xs:complexType>
    </xs:element>


</xs:schema>

The file does get converted to base64binary. The JAXB clases are generated correctly. The Endpoint works but it is not including the file as an attachement. It is including it as part of the XML tag even though i have set mtomEnabled=true.

What am i missing?

Answer 1

Finally managed to get it to work. The configuration is more or less the same as what i had in my original post. I had to update the configuration file. Here is how my configuration file looks like now.

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ws="http://www.springframework.org/schema/web-services"
    xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="http://www.springframework.org/schema/web-services http://www.springframework.org/schema/web-services/web-services-2.0.xsd
        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd">

    <context:component-scan base-package="com.mypackage.ws" />

    <ws:annotation-driven />

    <ws:dynamic-wsdl id="serviceDefinition"
        portTypeName="Msm" locationUri="http://localhost:8080/MyWebService/webservice">
        <ws:xsd location="/WEB-INF/schemas/schema.xsd" />
    </ws:dynamic-wsdl>

    <bean id="messageReceiver"
        class="org.springframework.ws.soap.server.SoapMessageDispatcher">
        <property name="endpointAdapters">
            <list>
                <ref bean="defaultMethodEndpointAdapter" />
            </list>
        </property>
    </bean>

    <bean id="defaultMethodEndpointAdapter"
        class="org.springframework.ws.server.endpoint.adapter.DefaultMethodEndpointAdapter">
        <property name="methodArgumentResolvers">
            <list>
                <!-- Be careful here! You might need to add more processors if you do 
                    more than webservices! -->
                <ref bean="marshallingPayloadMethodProcessor" />
            </list>
        </property>
        <property name="methodReturnValueHandlers">
            <list>
                <ref bean="marshallingPayloadMethodProcessor" />
            </list>
        </property>
    </bean>

    <bean id="marshaller" class="org.springframework.oxm.jaxb.Jaxb2Marshaller">
        <property name="contextPath" value="com.mypackage.ws" />
        <property name="mtomEnabled" value="true" />
    </bean>

    <bean id="marshallingPayloadMethodProcessor"
        class="org.springframework.ws.server.endpoint.adapter.method.MarshallingPayloadMethodProcessor">
        <constructor-arg ref="marshaller" />
        <constructor-arg ref="marshaller" />
    </bean>
</beans>

The changes i added were based on what i read on this article - blog.hpxn.net/2012/06/

Edit - An example

Here is an example (based on the spring samples) that returns the attachment in MTOM format. I just tried it and the response is shown below:

   HTTP/1.1 200 OK
Server: Apache-Coyote/1.1
Accept: text/xml, text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2
SOAPAction: ""
Content-Type: Multipart/Related; start-info="text/xml"; type="application/xop+xml"; boundary="----=_Part_0_17910623.1342789122256"
Transfer-Encoding: chunked
Date: Fri, 20 Jul 2012 12:58:42 GMT

------=_Part_0_17910623.1342789122256
Content-Type: application/xop+xml; charset=utf-8; type="text/xml"

<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"><SOAP-ENV:Header/><SOAP-ENV:Body><ns2:LoadImageResponse xmlns:ns2="http://www.springframework.org/spring-ws/samples/mtom"><ns2:name>?</ns2:name><ns2:image><xop:Include xmlns:xop="http://www.w3.org/2004/08/xop/include" href="cid:f1c3ef65-a519-4bba-9b92-9acffc0c14f7%40www.springframework.org"/></ns2:image></ns2:LoadImageResponse></SOAP-ENV:Body></SOAP-ENV:Envelope>
------=_Part_0_17910623.1342789122256
Content-Type: image/png
Content-ID: <f1c3ef65-a519-4bba-9b92-9acffc0c14f7@www.springframework.org>
Content-Transfer-Encoding: binary

‰PNG

Note that i have not configured any Axiom factories. The necessary files are listed below:

schema.xsd

<?xml version="1.0" encoding="UTF-8"?>
<schema xmlns="http://www.w3.org/2001/XMLSchema" targetNamespace="http://www.springframework.org/spring-ws/samples/mtom"
        xmlns:tns="http://www.springframework.org/spring-ws/samples/mtom"
        xmlns:xmime="http://www.w3.org/2005/05/xmlmime" elementFormDefault="qualified">

    <element name="StoreImageRequest" type="tns:Image"/>

    <element name="LoadImageRequest" type="string"/>

    <element name="LoadImageResponse" type="tns:Image"/>

    <complexType name="Image">
        <sequence>
            <element name="name" type="string"/>
            <element name="image" type="base64Binary" xmime:expectedContentTypes="image/png"/>
        </sequence>
    </complexType>

</schema>

spring-ws-servlet.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd">

    <bean id="imageRepository" class="org.springframework.ws.samples.mtom.service.StubImageRepository"/>

    <bean class="org.springframework.ws.samples.mtom.ws.ImageRepositoryEndpoint">
        <constructor-arg ref="imageRepository"/>
    </bean>

    <bean class="org.springframework.ws.server.endpoint.mapping.PayloadRootAnnotationMethodEndpointMapping"/>

    <bean class="org.springframework.ws.server.endpoint.adapter.GenericMarshallingMethodEndpointAdapter">
        <constructor-arg ref="marshaller"/>
    </bean>

    <bean id="marshaller" class="org.springframework.oxm.jaxb.Jaxb2Marshaller">
        <property name="contextPath" value="org.springframework.ws.samples.mtom.schema"/>
        <property name="mtomEnabled" value="true"/>
    </bean>

    <bean id="mtom" class="org.springframework.ws.wsdl.wsdl11.DefaultWsdl11Definition">
        <property name="schema" ref="schema"/>
        <property name="portTypeName" value="ImageRepository"/>
        <property name="locationUri" value="http://localhost:8080/mtom-server/"/>
    </bean>

    <bean id="schema" class="org.springframework.xml.xsd.SimpleXsdSchema">
        <property name="xsd" value="/WEB-INF/schema.xsd"/>
    </bean>

</beans>

web.xml

<web-app xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"
         version="2.4">

    <display-name>MyCompany HR Holiday Service</display-name>

    <servlet>
        <servlet-name>spring-ws</servlet-name>
        <servlet-class>org.springframework.ws.transport.http.MessageDispatcherServlet</servlet-class>
    </servlet>

    <servlet-mapping>
        <servlet-name>spring-ws</servlet-name>
        <url-pattern>/*</url-pattern>
    </servlet-mapping>

</web-app>

To get the response returned as a SAAJ attachment rather than an MTOM attachment, i have to manually configure the SAAj factories as described in this thread How do I add an attachment to a response payload in Spring-WS?