docs: public static String convertToXML(Object object) {
  		try {
  			if (!JAXB_CONTEXT_MAP.containsKey(object.getClass())) {
  				JAXB_CONTEXT_MAP.put(object.getClass(), JAXBContext.newInstance(object.getClass()));
  			}
  			Marshaller marshaller = JAXB_CONTEXT_MAP.get(object.getClass()).createMarshaller();
  			marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
  			// 设置CDATA输出字符
  			marshaller.setProperty(CharacterEscapeHandler.class.getName(), new CharacterEscapeHandler() {
  				public void escape(char[] ac, int i, int j, boolean flag, Writer writer) throws IOException {
  					writer.write(ac, i, j);
  				}
  			});
  			StringWriter stringWriter = new StringWriter();
  			marshaller.marshal(object, stringWriter);
  			return stringWriter.getBuffer().toString();
  		} catch (Exception e) {
  			logger.error("", e);
  		}
  		return null;
  	}