使用声明类型的JAXB反封送不会用数据填充结果对象

Question

<FHcomment>
 <TX>rewriting of file</TX>
 <tool_id>toolA</tool_id>
 <tool_vendor>Company</tool_vendor>
 <tool_version>1.7.36.0</tool_version>
</FHcomment>

@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "", propOrder = {
 "tx",
 "toolId",
 "toolVendor",
 "toolVersion",
 "userName",
 "commonProperties",
 "extensions"
})
@XmlRootElement(name = "FHcomment")
public class FHcomment {

@XmlElement(name = "TX", required = true)
protected TX tx;
@XmlElement(name = "tool_id", required = true)
protected BaseName toolId;
@XmlElement(name = "tool_vendor", required = true)
protected BaseName toolVendor;
@XmlElement(name = "tool_version", required = true)
protected BaseVersion toolVersion;
@XmlElement(name = "user_name")
protected BaseName userName;
@XmlElement(name = "common_properties")
protected CommonPropertiesType commonProperties;
protected ExtensionsType extensions;
@XmlAnyAttribute
private Map<QName, String> otherAttributes = new HashMap<QName, String>();

.....
/*
 * GETTERS and SETTERS for the fields have been removed here
 */
.....
}

JAXBContext jc = JAXBContext.newInstance(FHcomment.class);
String s = "<FHcomment>....</Fhcomment>";
Unmarshaller unmarshaller = jc.createUnmarshaller();
XMLInputFactory fac = XMLInputFactory.newFactory();
XMLStreamReader xsr = fac.createXMLStreamReader(new StringReader(s));
JAXBElement<FHcomment> foo = unmarshaller.unmarshal(xsr, FHcomment.class);
FHcomment val = foo.getValue();

如何告诉JAXB将给定的XML完全解封到对象中？

Answer 1

XML文档与映射中定义的名称空间限定不匹配（请参见：http://blog.bdoughan.com/2010/08/jaxb-namespaces.html）。您可以利用XMLFilter在反封送操作期间将名称空间应用于XML文档。

import org.xml.sax.*;
import org.xml.sax.helpers.XMLFilterImpl;

public class NamespaceFilter extends XMLFilterImpl {

    private static final String NAMESPACE = "htp://www.example.com/mdf/v4";

    @Override
    public void endElement(String uri, String localName, String qName)
            throws SAXException {
        super.endElement(NAMESPACE, localName, qName);
    }

    @Override
    public void startElement(String uri, String localName, String qName,
            Attributes atts) throws SAXException {
        super.startElement(NAMESPACE, localName, qName, atts);
    }

}

    // Create the XMLFilter
    XMLFilter filter = new NamespaceFilter();

    // Set the parent XMLReader on the XMLFilter
    SAXParserFactory spf = SAXParserFactory.newInstance();
    SAXParser sp = spf.newSAXParser();
    XMLReader xr = sp.getXMLReader();
    filter.setParent(xr);

    // Set UnmarshallerHandler as ContentHandler on XMLFilter
    Unmarshaller unmarshaller = jc.createUnmarshaller();
    UnmarshallerHandler unmarshallerHandler = unmarshaller
            .getUnmarshallerHandler();
    filter.setContentHandler(unmarshallerHandler);

    // Parse the XML
    InputSource xml = new InputSource("input.xml");
    filter.parse(xml);
    Object result = unmarshallerHandler.getResult();

null