xml解析选编.doc

Xml操作 关于xml解析 Xml解析共有四种方式： Dom解析 Sax解析 Jdom解析 Dom4j解析 关于Dom4j对xml文件的操作 用包： dom4j.jar jaxen-1.1.1.jar servlet-api.jar 增加操作： public void addPersonXml(Person person){ try { XMLWriter writer = null;// 声明写XML的对象 SAXReader reader = new SAXReader(); OutputFormat format = OutputFormat.createPrettyPrint(); //设置格式对象 format.setEncoding(UTF-8);// 设置XML文件的编码格式 format.setIndent(\n); format.setNewlines(true); String filePath = d:\\person.xml; File file = new File(filePath); if (file.exists()) { //当文件存在时，进行增加操作 Document document = reader.read(file);//获取xml文档 Element root = document.getRootElement();// 得到根节点 Element student = root.addElement(person); //向节点中添加元素 Element id = student.addElement(id); id.setText(person.getId()); Element name = student.addElement(name); name.setText(person.getName()); Element sex = student.addElement(sex); sex.setText(person.getSex()); Element age = student.addElement(address); age.setText(person.getAddress()); Element duty = student.addElement(duty); duty.setText(person.getDuty()); Element phone = student.addElement(phone); phone.setText(person.getPhone()); Element pass = student.addElement(pass); pass.setText(person.getPass()); Element salary = student.addElement(salary); salary.setText(String.valueOf(person.getSalary())); FileOutputStream fos=new FileOutputStream(filePath); writer = new XMLWriter(fos, format); writer.write(document); writer.close(); } else{//如若文件不存在，先对文件进行创立，然后进行增加操作 FileOutputStream fos=new FileOutputStream(filePath); Document _document = DocumentHelper.createDocument(); Element _root = _document.addElement(pers); Element _student = _root.addElement(person); Element _id = _student.addElement(id); _id.setText(person.getId()); Element _name = _student.addElement(name); _name.setText(person.getName()); Element _sex = _stude