MarshalXML.java 文件源码

@SuppressWarnings("unchecked")
public static String marshal(Object obj) {
    StringWriter stringWriter = new StringWriter();
    try {
        JAXBContext jaxbContext = JAXBContext.newInstance(obj.getClass());
        Marshaller jaxbMarshaller = jaxbContext.createMarshaller();
        jaxbMarshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, false);
        jaxbMarshaller.setProperty(Marshaller.JAXB_FRAGMENT, true);
        XmlRootElement xmlRootAnnotation = obj.getClass().getAnnotation(XmlRootElement.class);
        System.out.println(xmlRootAnnotation);
        if (xmlRootAnnotation == null) {
            XmlType xmlTypeAnnotation = obj.getClass().getAnnotation(XmlType.class);
            QName qname = new QName("", xmlTypeAnnotation.name());
            JAXBElement<Object> jaxbElement = new JAXBElement<Object>(qname, (Class<Object>) obj.getClass(), null, obj);
            jaxbMarshaller.marshal(jaxbElement, stringWriter);
        } else {
            jaxbMarshaller.marshal(obj, stringWriter);
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
    return stringWriter.toString();
}