jdomxpath.java~1~

XMLParsejava ,xml java parase 分析XMLParsejava ,xml java paras

package firstjdom;
import java.io.*;
import java.util.*;
import org.jdom.*;
import org.jdom.input.*;
import org.jdom.output.*;
import org.jdom.xpath.*; //支持XPath路径表达式
import org.jaxen.*; //Xpath解析的要用的

//XPath找到是经理的员工
public class JDOMXpath {
  public static void main(String[] args) throws Exception {

    org.jdom.input.SAXBuilder saxb =
        new SAXBuilder();

    Document doc = saxb.build("f:/company.xml");

    //建立一个XPath表达式
    org.jdom.xpath.XPath xpth =
        org.jdom.xpath.XPath.newInstance(
        "//emp[@job='MANAGER']");
    //选所有满足XPath表达式的节点
    List manager = xpth.selectNodes(doc);

    for (int i = 0; i < manager.size(); i++) {
      //每个经理
      Element el = (Element) manager.get(i);
      //找到ename
      Element eel = (Element) el.getChildren().get(0);
      //取出ename的值
      System.out.println(eel.getValue());

    }

  }

}