使用Dom4j解析XML

 1 import java.io.FileWriter;
 2 import java.io.IOException;
 3 import java.util.List;
 4 
 5 import org.dom4j.Document;
 6 import org.dom4j.Element;
 7 import org.dom4j.io.OutputFormat;
 8 import org.dom4j.io.SAXReader;
 9 import org.dom4j.io.XMLWriter;
10 
11 /**
12  * 
13  * a 性能好 b 操作方便 c 功能强大
14  * 
15  * 
16  * @author Jxy
17  *
18  */
19 public class Dom4jTest {
20 
21     public static void main(String[] args) throws Exception {
22         SAXReader reader = new SAXReader();
23         Document document = reader.read("NewFile.xml");
24 
25         Element root = document.getRootElement();
26         System.out.println(root.getName());
27         @SuppressWarnings("unchecked")
28         List<Element> elements = root.elements();
29 
30         for (Element element : elements) {
31             System.out.println("元素名称： " + element.getName());
32             Element name = element.element("name");
33             System.out.println(name.getText());
34         }
35 
36         // 增加节点
37 
38         Element student = root.addElement("student");
39         student.addAttribute("id", "3");
40         Element name = student.addElement("name");
41         name.setText("ganlun");
42         Element age = student.addElement("age");
43         age.setText("66");
44         toParserDemo(document);
45         // 修改节点
46         Element element = root.element("student");
47         element.element("name").setText("jiaohao");
48 
49         // 删除节点
50         root.remove(element);
51 
52     }
53 
54     public static void toParserDemo(Document document) throws IOException {
55         // 转换dom对象为xml文档
56         OutputFormat format = new OutputFormat();
57         format.setEncoding("UTF-8");
58         XMLWriter xmlWriter = new XMLWriter(new FileWriter("NewFIle.xml"), format);
59         xmlWriter.write(document);
60         xmlWriter.close();
61     }
62 
63 }