XML基础（二）

public static void main(String[] args) {
        
        ////////////////////////////////写文件//////////////////////////////////
        
        Document document = DocumentHelper.createDocument();       //创建文档
        
        Element addresslist = document.addElement("addresslist");  //定义节点
        Element linkman = addresslist.addElement("linkman");       //定义子节点
        Element name = linkman.addElement("name");
        Element email = linkman.addElement("email");
        
        name.setText("紫馨");
        email.setText("h**i@mail.dlut.edu.cn");
        
        OutputFormat format = OutputFormat.createPrettyPrint();     //设置输出格式
        format.setEncoding("GBK");                                  //指定输出编码
        try {
            XMLWriter writer = new XMLWriter(
                    new FileOutputStream("E:" + File.separator + "hello.xml"), format); //向文件输出XML文档
            writer.write(document);                                  //输出内容
            writer.close();
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        
        //////////////////////////读文件/////////////////////////
        
        File file = new File("E:" + File.separator + "hello.xml");
        SAXReader reader = new SAXReader();
        Document doc = null;
        
        try {
            doc = reader.read(file);
        } catch (DocumentException e) {
            e.printStackTrace();
        }
        
        Element root = doc.getRootElement();
        Iterator iterator = root.elementIterator();
        
        while (iterator.hasNext()) {
            Element linkmanE = (Element)iterator.next();
            System.out.println("姓名：" + linkman.elementText("name") + 
                    "，email：" + linkman.elementText("email"));
        }
    }

JDOM简介

JDOM = DOM 修改文件的优点 + SAX 读取快速的优点

public static void main(String[] args) {
        
        /////////////////////////写文件///////////////////////////
        
        Element addresslist = new Element("addresslist");
        Element linkman = new Element("linkman");
        Element name = new Element("name");
        Element email = new Element("email");
        
        Attribute id = new Attribute("id", "001");
        
        Document document = new Document(addresslist);
        
        name.setText("紫馨");
        email.setText("h**i@mail.dlut.edu.cn");
        name.setAttribute(id);
        linkman.addContent(name);
        linkman.addContent(email);
        addresslist.addContent(linkman);
        
        XMLOutputter outputter = new XMLOutputter();
        outputter.setFormat(outputter.getFormat().setEncoding("GBK"));
        
        try {
            outputter.output(document, new FileOutputStream("E:" + File.separator + "address.xml"));
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        
        ////////////////////////////读文件/////////////////////////
        
        SAXBuilder builder = new SAXBuilder();
        Document readDocument = null;
        try {
            readDocument = builder.build("E:" + File.separator + "address.xml");
        } catch (JDOMException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        
        Element stu = readDocument.getRootElement();
        List list = stu.getChildren("linkman");//获取全部linkman子元素
        for (int i = 0; i < list.size(); i++) {
            Element element = (Element)list.get(i);
            String nameStr = element.getChildText("name");
            String idStr = element.getChild("name").getAttribute("id").getValue();
            String emailStr = element.getChildText("email");
            
            System.out.println("姓名：" + nameStr + "， 编号：" + idStr);
            System.out.println("Email：" + emailStr);
        }
    }

 DOM4J 简介