学步园

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

package com.beckham.dom;<br /> import java.io.File;<br /> import java.util.List;<br /> import org.dom4j.Attribute;<br /> import org.dom4j.Document;<br /> import org.dom4j.Element;<br /> import org.dom4j.io.SAXReader;<br /> /**<br /> * @author 作者<Beckham> Email:gaowm0207@gmail.com Jan 29, 2010 9:37:44 AM<br /> * Version:1.0 XPATH解析xml文件<br /> */<br /> public class XPathXML {<br /> public static void main(String[] args) throws Exception {<br /> readFile("src/com/beckham/dom/person.xml");<br /> }</p> <p> @SuppressWarnings({ "unchecked", "unchecked" })<br /> public static void readFile(String fileName) throws Exception{</p> <p> SAXReader reader = new SAXReader() ;<br /> Document document = reader.read(new File(fileName)) ;</p> <p> List<Element> list = document.selectNodes("ROWDATA/ROW/DEPTNO") ;<br /> for(Element e :list){<br /> System.out.println(e.getName()+"="+e.getText());<br /> }<br /> //遍历属性 属性名前面加 @<br /> List<Attribute> listAtt = document.selectNodes("ROWDATA/ROW/ENAME/@firstname") ;<br /> for(Attribute att :listAtt){<br /> System.out.println(att.getName()+"="+att.getText());<br /> }<br /> }<br /> }<br />