W3C Document对象解析XML

W3C Document对象解析XML

1 public String viewPic(HttpServletRequest request, String id) {

2 //创建Document对象及读取XML文件

3 DocumentBuilderFactory builderFactory = DocumentBuilderFactory

4 .newInstance();

5 //解析XML

6 Document document=null;

7 try {

8 DocumentBuilder builder = builderFactory.newDocumentBuilder();

9

10 document = builder.parse(new File(request.getSession()

11 .getServletContext().getRealPath(

12 "/WEB-INF/classes/MyXml.xml")));

13 } catch (ParserConfigurationException e) {

14 e.printStackTrace();

15 } catch (SAXException e) {

16 e.printStackTrace();

17 } catch (IOException e) {

18 e.printStackTrace();

19 }

20 Element rootElement = document.getDocumentElement(); //获取根节点

21 NodeList childNodes = rootElement.getChildNodes(); //根节点下所有子节点

22

23 for (int i = 0; i < childNodes.getLength(); i++) { //循环第一层子节点

24 Node childNode = childNodes.item(i);

25 NodeList childNodes_2 = childNode.getChildNodes();

26 for(int j = 0;j < childNodes_2.getLength();j++){ //循环第二层子节点

27 Node childNode_2 = childNodes_2.item(j);

28 NodeList childNodes_3 = childNode_2.getChildNodes();

29 for(int k = 0;k < childNodes_3.getLength();k++){ //第三层

30 Node childNode_3 = childNodes_3.item(k);

31 System.out.println(childNode_3.getNodeValue());

32 }

33 }

34 }

35

36 return "img_1.jsp";

37 }

1//XML文件

2

3

4

5http://localhost:8080/tgklx/ 6

7