1 <?xml version="1.0" encoding="UTF-8"?>
2 <web-app xmlns="http://www.example.org/web-app_2_5"
3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
4 xsi:schemaLocation="http://www.example.org/web-app_2_5 web-app_2_5.xsd"
5 version="2.5">
6
7 <servlet>
8 <servlet-name>hello</servlet-name>
9 <servlet-class>doclwe4</servlet-class>
10 </servlet>
11 <servlet-mapping>
12 <servlet-name>hello</servlet-name>
13 <url-pattern>/hello</url-pattern>
14 </servlet-mapping>
15
16 </web-app>
1 package xmldemo;
2
3 import java.io.FileInputStream;
4 import java.io.FileNotFoundException;
5 import java.io.InputStream;
6 import java.util.List;
7
8 import javax.xml.stream.events.StartDocument;
9
10 import org.dom4j.Document;
11 import org.dom4j.DocumentException;
12 import org.dom4j.Element;
13 import org.dom4j.io.SAXReader;
14
15
16 public class dom4jDemo {
17
18 public static void main(String[] args) {
19 // TODO Auto-generated method stub
20 try {
21 testSaxReader();
22 } catch (Exception e) {
23 // TODO: handle exception
24 e.printStackTrace();
25 }
26
27 }
28
29
30 public static void testSaxReader() throws DocumentException, FileNotFoundException {
31 SAXReader saxReader = new SAXReader();
32 FileInputStream file = new FileInputStream("src/xmldemo/schemademo.xml");
33 Document doc = saxReader.read(file);
34 Element root = doc.getRootElement(); //获取根元素
35 System.out.println(root.getName());//获取根元素的名称
36 System.out.println(root.attributeValue("version")); //获取根元素上 version 属性
37 List<Element> childsElement = root.elements();
38 for(Element child : childsElement) {
39 if ("servlet".equals(child.getName())) {
40 //拿到 所有标签是servlet 的 标签
41 Element servlet_name = child.element("servlet-name"); //拿到 servlet-name 标签
42 Element servlet_class = child.element("servlet-class"); //拿到 servlet-class 标签
43 System.out.println(servlet_name.getData());
44 System.out.println(servlet_class.getData());
45 }
46 }
47
48 }
49 }
