JDOM 和 DOM4J

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對於xml文件

<?xml version="1.0" encoding="UTF-8"?><Employees>    <Employee id="1">        <age>29</age>        <name>Pankaj</name>        <gender>Male</gender>        <role>Java Developer</role>    </Employee>    <Employee id="2">        <age>35</age>        <name>Lisa</name>        <gender>Female</gender>        <role>CEO</role>    </Employee>    <Employee id="3">        <age>40</age>        <name>Tom</name>        <gender>Male</gender>        <role>Manager</role>    </Employee></Employees>

JDOM：

public void test() throws Exception {
       // 1 创建 DOM DocumentBuilder工厂
       DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
       // 2 创建DOM DocumentBuilder类
       DocumentBuilder dBuilder = null;
       dBuilder = dbFactory.newDocumentBuilder();
       // 3 创建Document类
       Document doc = dBuilder.parse(new File("/home/rjm/Desktop/mytest.xml"));
       // 4 创建DOMBuilder
       DOMBuilder domBuilder = new DOMBuilder();
       // 5 创建DOM文档
       org.jdom2.Document jdomDoc = domBuilder.build(doc);
       // 6 获取根Element
       Element root = jdomDoc.getRootElement();
       // 7 获取子元素列表
       List<Element> empListElements = root.getChildren();
       List<Employee> empList = new ArrayList<Employee>();
       // 8 遍历子元素列表存儲
       for (Element empElement : empListElements) {
           Employee emp = new Employee();
           emp.setId(Integer.parseInt(empElement.getAttributeValue("id")));
           emp.setAge(Integer.parseInt(empElement.getChildText("age")));
           emp.setName(empElement.getChildText("name"));
           emp.setRole(empElement.getChildText("role"));
           emp.setGender(empElement.getChildText("gender"));
           empList.add(emp);
       }
       // 7 打印
       for (Employee emp : empList) {
           System.out.println(emp);
       }
   }

   class Employee {
       private int id;
       private String name;
       private String gender;
       private int age;
       private String role;

       public int getId() {
           return id;
       }

       public void setId(int id) {
           this.id = id;
       }

       public String getName() {
           return name;
       }

       public void setName(String name) {
           this.name = name;
       }

       public String getGender() {
           return gender;
       }

       public void setGender(String gender) {
           this.gender = gender;
       }

       public int getAge() {
           return age;
       }

       public void setAge(int age) {
           this.age = age;
       }

       public String getRole() {
           return role;
       }

       public void setRole(String role) {
           this.role = role;
       }

       public String toString() {
           return "Employee:: ID=" + this.id + " Name=" + this.name + " Age=" + this.age + " Gender=" + this.gender
                   + " Role=" + this.role;
       }
   }

DOM4J：

1.读取

    public void Dom4j() throws Exception {
       InputStream in = new FileInputStream("/home/rjm/Desktop/mytest.xml");
       // 1 創建SAXReader讀取器
       SAXReader saxReader = new SAXReader();
       // 2 讀入xml輸入流
       org.dom4j.Document document = saxReader.read(in);
       // 3 獲取根結點
       org.dom4j.Element rootElement = document.getRootElement();
       // 4 獲取根結點屬性
       System.out.println("根結點名字：" + rootElement.getName());
       System.out.println("根結點屬性數量：" + rootElement.attributeCount());
       System.out.println("根結點屬性：" + rootElement.attributeValue("id"));
       // System.out.println("根結點內容："+rootElement.getText());
       // System.out.println("根結點子結點的內容"+rootElement.getStringValue());
       // 5 獲取子結點
       List<org.dom4j.Element> list=new ArrayList<org.dom4j.Element>();
       list= rootElement.elements("Employee");
       for(org.dom4j.Element childElement:list)
           System.out.println("子結點內容"+childElement.getStringValue());
   }

2.输入

public void createXml() throws Exception {
       // DocumentHelper提供了創建Document對象的方式
       org.dom4j.Document document = DocumentHelper.createDocument();
       // 添加結點信息
       org.dom4j.Element rootElement = document.addElement("modules");
       rootElement.setText("這個時modules結點的文本信息");
       org.dom4j.Element element = rootElement.addElement("module");

       org.dom4j.Element nameElement = element.addElement("name");
       org.dom4j.Element valueElement = element.addElement("valus");
       org.dom4j.Element descriptionElement = element.addElement("description");
       nameElement.setText("名稱");
       nameElement.addAttribute("language", "java");
       valueElement.setText("值");
       valueElement.addAttribute("language", "c#");
       descriptionElement.setText("描述");
       descriptionElement.addAttribute("language", "sql server");
       System.out.println(document.asXML());

       Writer fileWriter = new FileWriter("/home/rjm/Desktop/test1.xml");
       // dom4j提供了專門寫入文件的對象WMLWriter
       XMLWriter xmlWriter=new XMLWriter(fileWriter);
       xmlWriter.write(document);
       xmlWriter.flush();
       xmlWriter.close();
       System.out.println("添加成功");


   }

參考：http://blog.csdn.net/rongbo_j/article/details/50320689

參考：http://blog.csdn.net/chenghui0317/article/details/11486271

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