有没有办法可以将JAXB类（不是它的对象）转换为xml模板 .

例如

以下代码取自http://www.javacodegeeks.com/2011/02/jaxb-generate-xml-xsd.html

public static void main(String[] args) throws JAXBException
    {

        ObjectFactory factory = new ObjectFactory();

        UserT user = factory.createUserT();
        user.setUserName("Sanaulla");
        ItemT item = factory.createItemT();
        item.setItemName("Seagate External HDD");
        item.setPurchasedOn("August 24, 2010");
        item.setAmount(new BigDecimal("6776.5"));

        ItemListT itemList = factory.createItemListT();
        itemList.getItem().add(item);

        ExpenseT expense = factory.createExpenseT();
        expense.setUser(user);
        expense.setItems(itemList);

        JAXBContext context = JAXBContext.newInstance("generated");
        JAXBElement element = factory.createExpenseReport(expense);
        Marshaller marshaller = context.createMarshaller();
        marshaller.setProperty("jaxb.formatted.output",Boolean.TRUE);
        marshaller.marshal(element,System.out);
    }

在上面的代码中，类Element的对象已被创建为marshall . 我的问题是，如果我没有JAXB类的对象，我仍然能够生成xml模板（没有值）

java xml jaxb