dom4j 复制 添加 并修改 节点

	public static void main( String[] args ){
		XMLReadandWrite mR = new XMLReadandWrite();
		
		try {
			Document document1 = mR.readXMLToDoc("d:/zf/workspace/javaTest/1.xml");
			Document document2 = mR.readXMLToDoc("d:/zf/workspace/javaTest/2.xml");
			List items = document1.selectNodes("//root//Item");
			Document newDOc = DocumentHelper.createDocument();
			Element root = newDOc.addElement("root");

			for (Iterator iter = items.iterator(); iter.hasNext();) { 
				Element item = (Element) iter.next(); 
				//root.add(item.detach());//如果无需保留原文档对象 
//				System.out.println(item);
				root.appendContent(item.getParent()); //如果必需保留原对象}
			}
			List attr_listList = newDOc.selectNodes("//root//Item//attr");
			for(Object o:attr_listList){
				Element element = (Element)o;
				Attribute a = element.attribute("Name");
//				System.out.println(a.asXML());
				a.setValue("111111");
//				System.out.println(a.asXML());
			}
//			System.out.println(document1.asXML());
//			System.out.println(newDOc.asXML());
			document2.getRootElement().appendContent(newDOc.getRootElement());
			document2.getRootElement().elements().add(0, (Element)newDOc.selectSingleNode("//root//Item").clone());
			System.out.println(document2.asXML());
			
		} catch (Exception e) {
			e.printStackTrace();
		}
	}