Spring WS Web服务。使用SAAJ向响应中添加附件-端点无适配器

我真的很难让Spring-
WS返回带有附件的响应。我设法获得了MTOM版本，但是这在客户端上有一些先决条件，因为我认为客户端也必须启用MTOM（如果不正确，请更正我）。

我现在想要做的是使用SAAJ和Spring-WS的附件实现实现标准的SOAP。

为此，我实现了一个端点，该端点仅将来自本地文件系统的图像附加到响应。

@Endpoint
public class TestEndPoint {

private SaajSoapMessageFactory saajMessageFactory;

@PayloadRoot(namespace="http://ws.mypackage.com",localPart="downloadMessageRequestSaaj")
    @ResponsePayload
    public JAXBElement<DownloadResponseSaajType> invoke(@RequestPayload DownloadMessageRequestSaaj req,MessageContext context ) throws Exception  {

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

        DataHandler handler = new javax.activation.DataHandler(new FileDataSource("c:\\temp\\maven-feather.png"));

            SaajSoapMessage message = saajMessageFactory.createWebServiceMessage();
            message.addAttachment("picture",handler);

            context.setResponse(message);

            payload.setMessagePayLoad(handler);

            return objectFactory.createDownloadMessageResponseSaaj(response);

    }

    public void setSaajMessageFactory(SaajSoapMessageFactory saajMessageFactory){
        this.saajMessageFactory = saajMessageFactory;
    }

    public SaajSoapMessageFactory getSaajMessageFactory(){
        return saajMessageFactory;
    }
}

Saaj属性注入了视点，如下所示：

<sws:annotation-driven/>

<bean id="soapMessageFactory" class="javax.xml.soap.MessageFactory" factory-method="newInstance" />
<bean id="saajMessageFactory" class="org.springframework.ws.soap.saaj.SaajSoapMessageFactory">
        <constructor-arg ref="soapMessageFactory" />
</bean>

<bean id="myService" class="com.mypackage.TestEndPoint">
    <property name="saajMessageFactory" ref="saajMessageFactory" />
</bean>

当我尝试致电上述服务时，出现以下错误：

<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/">
   <SOAP-ENV:Header/>
   <SOAP-ENV:Body>
      <SOAP-ENV:Fault>
         <faultcode>SOAP-ENV:Server</faultcode>
         <faultstring xml:lang="en">No adapter for endpoint [public javax.xml.bind.JAXBElement&lt;com.mypackage.ws.DownloadResponseSaajType> com.mypackage.TestEndPoint.invoke(com.mypackage.ws.DownloadMessageRequestSaaj,org.springframework.ws.context.MessageContext) throws java.lang.Exception]: Is your endpoint annotated with @Endpoint,or does it implement a supported interface like MessageHandler or PayloadEndpoint?</faultstring>
      </SOAP-ENV:Fault>
   </SOAP-ENV:Body>
</SOAP-ENV:Envelope>

编辑7月13日

我今天注意到，我更改了方法签名以删除MessageContext参数，如下所示，然后我没有得到该错误：

public JAXBElement<DownloadResponseSaajType> invoke(@RequestPayload DownloadMessageRequestSaaj req)

但是，问题是我需要访问MessageContext才能添加附件。可能是我的配置在某处错误吗？