JDOM解析XML

  JDOM生成XML文档：（文档的输出）

public static void main(String[] args) throws IOException, IOException {
		Document document = new Document();
		
		Element root = new Element("root");
		
		document.addContent(root);
		
		//添加注释
		Comment comment =new Comment("this is my comments");
		
		root.addContent(comment);
		
		Element e = new Element("hello");
		
		e.setAttribute("wubaoguo","wustrive_2008");
		
		root.addContent(e);
		
		Attribute attr = new Attribute("test","world");
		
		Element e2 = new Element("world");
		
		e2.setAttribute(attr);
		
		root.addContent(e2);
		
		e2.addContent(new Element("xxx").setAttribute("a","b").setAttribute("c","d").setText("content"));
		
		//设置输出格式
		Format format = Format.getPrettyFormat();
		format.setIndent("    ");
		
		XMLOutputter out = new XMLOutputter(format);
		
		out.output(document,new FileOutputStream("jdom.xml"));
	}

JDOM解析XML（文档的输入）

public static void main(String[] args) throws JDOMException, IOException {
		SAXBuilder builder = new SAXBuilder();
		
		Document doc = builder.build(new File("jdom.xml"));
		
		Element element = doc.getRootElement();
		
		System.out.println(element.getName());
		
		Element hello = element.getChild("hello");
		
		System.out.println(hello.getText());
		
		List list = hello.getAttributes();
		
		for(int i=0;i<list.size();i++){
			Attribute attr =(Attribute)list.get(i);
			
			String attrName = attr.getName();
			String attrValue = attr.getValue();
			
			System.out.println(attrName+"="+attrValue);
			
		}
		
		hello.removeChild("welcome");
		
		XMLOutputter out = new XMLOutputter(Format.getPrettyFormat().setIndent("    "));
	
		out.output(doc, new FileOutputStream("jdom2.xml"));
	}