[java] - Marshaller 을 이용한 Object to xml string

클래스에 @XmlRootElement annotation을 사용하지 않은 obejct를 마샬링할 때 사용하면 유용할듯.

public String getMarshallingString(Object obj, String uri, String rootElement) throws Exception {
    JAXBContext jaxbContext;
    StringWriter st = new StringWriter();
    try {
        jaxbContext = JAXBContext.newInstance(obj.getClass());
        Marshaller marshaller = jaxbContext.createMarshaller();
        marshaller.marshal(new JAXBElement(
                  new QName("http://map.star", obj.getClass().getSimpleName()), obj.getClass(), obj ), st);

        return XMLPrinter.prettyFormat(st.toString());
    } catch(Exception e) {
        e.printStackTrace();
        throw e;
    }
}