DOM解析XML例子
例1：缩进式XMLimport javax.xml.parsers.*; import org.w3c.dom.*; import java.io.*; public class DOMPageList{ public static void main(String[] args) { try { //创建解析工厂 DocumentBuilderFactory dbfactory = DocumentBuilderFactory.newInstance(); //指定DocumentBuilder DocumentBuilder builder = dbfactory.newDocumentBuilder(); //从文件构造一个Document，因为XML文件中已经指定了编码，所以这里不必了 Document doc = builder.parse(new File("book.xml")); //得到Document的根（节点名：book） Element root = doc.getDocumentElement(); System.out.println("根节点标记名：" + root.getTagName()); System.out.println("*****下面遍历XML元素*****"); //获得page元素 NodeList list = root.getElementsByTagName("content"); System.out.println(list.getLength()); //遍历page元素 for (int i=0; i < list.getLength() ; i++) { //获得page的元素 Element element = (Element)list.item(i); //获得ID属性 NodeList titleid = element.getElementsByTagName("id"); //获得id元素 Element idElement = (Element)titleid.item(0); //获得id元素的第一个值 String id = idElement.getFirstChild().getNodeValue(); System.out.println("ID :" + " " + id+ "title :"+ " " + title+"file :" + " " + file); } } catch (Exception e) { e.printStackTrace(); } }
book.xml:
<?xml version="1.0" encoding="UTF-8"?> <book> <content><id>100010</id> <title>java tools</title> <file>c:\file\</file> </content> </book>
例2：横排式xml:
try { DocumentBuilderFactory dbfactory = DocumentBuilderFactory.newInstance(); DocumentBuilder builder = dbfactory.newDocumentBuilder(); Document doc = builder.parse(new File("book.xml")); Element root = doc.getDocumentElement(); NodeList list = root.getElementsByTagName("xml"); Node node = null; String name = ""; for(int i=0;i<list.getLength();i++){ node = list.item(i); name = node.getAttributes().getNamedItem("name").getNodeValue(); System.out.println("可以得到属性name的值:"+name); } } catch (Exception e) { e.printStackTrace(); }
book.xml:
<?xml version="1.0" encoding="UTF-8"?><xmlbody><xml id="1,3,4" name="张三"/><xml id="11,33,44" name="李四" /></xmlbody>
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