如何将JAXBElement作为SOAP消息的SOAPBody的子项追加

Question

如何将JAXBElement作为SOAP消息的SOAPBody的子项追加.我在我的Web服务端点方法中尝试做的是:

    SaajSoapMessage soapRequest = (SaajSoapMessage) messageContext.getRequest();
    SOAPBody soapBody=soapRequest.getSaajMessage().getSOAPBody();
    ObjectFactory of=new ObjectFactory();
    SplsTID tid=new SplsTID();
    JAXBElement<SplsTID> element=of.createSplsTID(tid);
    element.soapBody.appendChild(element);

然后我得到了java.lang.ClassCastException: javax.xml.bind.JAXBElement cannot be cast to org.w3c.dom.Element.

我正在使用spring-WS并使用jaxb marshaller.我们应该怎么做？

Answer 1

我想我想出了一个更优雅的解决方案:

// Having a SOAPMessage message and a JAXBContext context...
// Marshall the JAXB object request into to a DOM document
Document document = DocumentBuilderFactory.newInstance().newDocumentBuilder().newDocument();
final Marshaller marshaller = context.createMarshaller();
marshaller.marshal(request,document);

// Finally attach the document to the message and save. Done!
soapBody.addDocument(document);
message.saveChanges();

Answer 2

基本上，你必须越过你的肩膀挠你的屁股。

使用 JAXBContext 创建编组器，将其全部转换为字符串。然后将字符串转换为 xml 元素。

private static Element JAXBElementToDomElement(MyClassThatImTryingToConvert element) {

    try {
        JAXBContext jc = JAXBContext.newInstance(new Class[] { 
              MyClassThatImTryingToConvert.class, OtherJAXBClasses.class });
        Marshaller um = jc.createMarshaller();
        StringWriter sw = new StringWriter();

        um.marshal(element, sw);
        InputStream is = new ByteArrayInputStream(sw.toString().getBytes());
        Document xmlDocument = DocumentBuilderFactory.newInstance().newDocumentBuilder().parse(is);
        return xmlDocument.getDocumentElement();
    } catch (Exception ex) {
        log.log(Level.FATAL, "can't create dom element", ex);
    }
    return null;

还有一种选择。使用 XmlBeans 构建您的类（这将使使用 JAXB 变得困难，因此使用 JAX-WS）。