# 18.3\. 操作XML数据 让我们来读入和更新应用程序中的XML文档。通过获取一个dom4j会话可以做到这一点： ``` Document doc = ....; Session session = factory.openSession(); Session dom4jSession = session.getSession(EntityMode.DOM4J); Transaction tx = session.beginTransaction(); List results = dom4jSession .createQuery("from Customer c left join fetch c.accounts where c.lastName like :lastName") .list(); for ( int i=0; i<results.size(); i++ ) { //add the customer data to the XML document Element customer = (Element) results.get(i); doc.add(customer); } tx.commit(); session.close(); ``` ``` Session session = factory.openSession(); Session dom4jSession = session.getSession(EntityMode.DOM4J); Transaction tx = session.beginTransaction(); Element cust = (Element) dom4jSession.get("Customer", customerId); for ( int i=0; i<results.size(); i++ ) { Element customer = (Element) results.get(i); //change the customer name in the XML and database Element name = customer.element("name"); name.element("first-name").setText(firstName); name.element("initial").setText(initial); name.element("last-name").setText(lastName); } tx.commit(); session.close(); ``` 将这一特色与Hibernate的`replicate()`操作结合起来对于实现的基于XML的数据导入/导出将非常有用.