使用XPath解析xml文檔

import org.jdom.Document;
import org.jdom.Element;
import org.jdom.input.SAXBuilder;
import org.jdom.xpath.XPath;

public class Xpather {
    public static void testXPath(String filePath) throws Exception {
        SAXBuilder sb = new SAXBuilder();
        Document doc = sb.build(new FileInputStream(filePath));
        Element root = doc.getRootElement(); //讀取根節點
        //返回resume節點下的所有子節點
        XPath xPath = XPath.newInstance("/resume/*");
        //返回文檔中所有preOccupation節點
        //XPath xPath = XPath.newInstance("http://preOccupation");
        //返回/resume/wife/preOccupation這個節點
        //XPath xPath = XPath.newInstance("/resume/wife/preOccupation");
        //返回名字preOccupation有屬性peroid的節點
        //XPath xPath = XPath.newInstance("/resume/wife/preOccupation[@period]");
        //返回文檔中所有preOccupation節點，并且有屬性period
        //XPath xPath = XPath.newInstance("http://preOccupation[@period]");
        //返回名字為preOccupation屬性period='5-18'的節點。
        //XPath xPath = XPath.newInstance("/resume/wife/preOccupation[@period='5-18']");
        //返回文檔中所有preOccupation節點，并且文本內容為皇子
        //XPath xPath = XPath.newInstance("http://preOccupation[text()='皇子']");
        List list = xPath.selectNodes(root);
        for (int i = 0; i < list.size(); i++) {
            Element e = (Element) list.get(i);
            System.out.println(e.getText());
        }
//        Element e2 = (Element) xPath.selectSingleNode(root);
//        System.out.println(e2.getText());
    }
}</pre>