jdom的实现:org.jdom.Element rootElement = new org.jdom.Element("hibernate-mapping");
org.jdom.Document myDocument = new org.jdom.Document(rootElement,new DocType("AAA","BBB","CCC"));
org.jdom.Document myDocument = new org.jdom.Document(rootElement,new DocType("AAA","BBB","CCC"));
开始时的时候是用DOM,用DOM怎么生成还没解决。