MarshallerInterceptor.java 文件源码

@Override
@SuppressWarnings("unchecked")
public void writeTo(Object object, Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType, MultivaluedMap<String, Object> httpHeaders,
        OutputStream entityStream) throws IOException, WebApplicationException {
    try {
        JAXBContext jaxbContext = JAXBContext.newInstance(object.getClass());
        Marshaller jaxbMarshaller = jaxbContext.createMarshaller();
        jaxbMarshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
        jaxbMarshaller.setProperty(Marshaller.JAXB_FRAGMENT, true);
        for (Annotation annotation : annotations) {
            if (annotation instanceof XsiSchemaLocation) {
                XsiSchemaLocation schemaAnnotation = (XsiSchemaLocation) annotation;
                String schemaLocation = schemaAnnotation.schemaLocation();
                jaxbMarshaller.setProperty(Marshaller.JAXB_SCHEMA_LOCATION, schemaLocation);
            }
        }
        XmlType xmlTypeAnnotation = object.getClass().getAnnotation(XmlType.class);
        QName qname = new QName("", xmlTypeAnnotation.name());
        StringWriter stringWriter = new StringWriter();
        JAXBElement<Object> jaxbElement = new JAXBElement<Object>(qname, (Class<Object>) object.getClass(), null, object);
        jaxbMarshaller.marshal(jaxbElement, stringWriter);
        entityStream.write(stringWriter.toString().getBytes());
    } catch (Exception e) {
        throw new WebApplicationException(e);
    }
}