Dom4j读文件---XPath

dom4j对xpath的支持很好的方便了对具体某个节点的遍历，使用xpath遍历时，需要jaxen-1.1.1.jar 的支持

<?xml version="1.0" encoding="UTF-8"?>
<ROWDATA>
	<ROW>
		<EMPNO>7499</EMPNO>
		<ENAME firstname="zhang" lastname="shanfeng">ALLEN</ENAME>
		<JOB type="basic">SALESMAN</JOB>
		<MGR>7698</MGR>
		<HIREDATE>1981-2-20</HIREDATE>
		<SAL>3200.0</SAL>
		<COMM>300.00</COMM>
		<DEPTNO>30</DEPTNO>
	</ROW>
	<ROW>
		<EMPNO>7566</EMPNO>
		<ENAME>JONES</ENAME>
		<JOB>MANAGER</JOB>
		<MGR>7839</MGR>
		<HIREDATE>1981-4-2</HIREDATE>
		<SAL>5950.0</SAL>
		<COMM />
		<DEPTNO>20</DEPTNO>
	</ROW>
	
</ROWDATA>

package com.beckham.dom;
import java.io.File;
import java.util.List;
import org.dom4j.Attribute;
import org.dom4j.Document;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;
/**
 * @author 作者<Beckham> Email:[e-mail] Jan 29, 2010 9:37:44 AM
 *         Version:1.0 XPATH解析xml文件
 */
public class XPathXML {
	public static void main(String[] args) throws Exception {
		readFile("src/com/beckham/dom/person.xml");
	}
	
	@SuppressWarnings({ "unchecked", "unchecked" })
	public static void readFile(String fileName) throws Exception{
		
		SAXReader reader = new SAXReader() ;
		Document document = reader.read(new File(fileName)) ;
		
		List<Element> list =  document.selectNodes("ROWDATA/ROW/DEPTNO") ;
		for(Element e :list){
			System.out.println(e.getName()+"="+e.getText());
		}
		//遍历属性 属性名前面加 @
		List<Attribute> listAtt =  document.selectNodes("ROWDATA/ROW/ENAME/@firstname") ;
		for(Attribute att :listAtt){
			System.out.println(att.getName()+"="+att.getText());
		}
	}
}