DocumentBuilderFactory  factory=DocumentBuilderFactory.newInstance();//得到解析工厂 
	  
	  DocumentBuilder newDocumentBuilder = factory.newDocumentBuilder();//文档解析器
	  Document parse = newDocumentBuilder.parse("stus.xml");
	  
	  NodeList elementsByTagName = parse.getElementsByTagName("stus");
		Element e= (Element)elementsByTagName.item(0);
		  System.out.println(e.getElementsByTagName("age").item(0).getFirstChild().getTextContent());
	  
		
		  
		  DOMReader reader=new DOMReader();
		  
		  org.dom4j.Document read = reader.read(parse);
		  org.dom4j.Element rootElement = read.getRootElement();
		  List elements = rootElement.elements();
		  
		  Iterator<org.dom4j.Element> childs = elements.iterator();
		  
		  while(childs.hasNext()){
			  
			  org.dom4j.Element child = childs.next();
			  System.out.println(child.getText());
			   if(child.getName().equals("age")){
				     System.out.println(child.getText());
					  System.out.println("id:"+child.attributeValue("id"));
                       
					  List<org.dom4j.Element> elements2 = child.elements("s");
					  System.out.println(elements2.get(0).getText());
					  
			   }
		  }
		  
}