<?xml version="1.0" encoding="gb2312"?>
<students><student age="25"><!--如果没有age属性，默认的为20--><name>崔卫兵</name><college>PC学院</college><telephone>62354666</telephone><notes>男,1982年生,硕士，现就读于北京邮电大学</notes></student><student><name>cwb</name><college leader="学院领导">PC学院</college><!--如果没有leader属性，默认的为leader--><telephone>62358888</telephone><notes>男,1987年生,硕士，现就读于中国农业大学</notes></student><student age="45"><name>xxxxx</name><college leader="">xxx学院</college><telephone>66666666</telephone><notes>注视中，注释中</notes></student><student age=""><name>lxx</name><college>yyyy学院</college><telephone>88888888</telephone><notes>注视中111，注释中222</notes></student>
</students>

import java.io.File;
import java.util.HashMap;
import java.util.Iterator;import org.dom4j.Attribute;
import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;/*** 利用dom4j进行XML编程* * @author henuyuxiang* @since 2014.7.11*/
public class Dom4jReadExmple {/*** 遍历整个XML文件，获取所有节点的值与其属性的值，并放入HashMap中* * @param filename*            String 待遍历的XML文件（相对路径或者绝对路径）* @param hm*            HashMap*            存放遍历结果，格式：<nodename,nodevalue>或者<nodename+attrname,attrvalue>*/public void iterateWholeXML(String filename, HashMap<String, String> hm) {SAXReader saxReader = new SAXReader();try {Document document = saxReader.read(new File(filename));Element root = document.getRootElement();// 用于记录学生编号的变量int num = -1;// 遍历根结点（students）的所有孩子节点（肯定是student节点）for (@SuppressWarnings("rawtypes")Iterator iter = root.elementIterator(); iter.hasNext();) {Element element = (Element) iter.next();num++;// 获取person节点的age属性的值Attribute ageAttr = element.attribute("age");if (ageAttr != null) {String age = ageAttr.getValue();if (age != null && !age.equals("")) {hm.put(element.getName() + "-" + ageAttr.getName()+ num, age);} else {hm.put(element.getName() + "-" + ageAttr.getName()+ num, "20");}} else {hm.put(element.getName() + "-age" + num, "20");}// 遍历student结点的所有孩子节点（即name，college，telphone，notes），并进行处理for (@SuppressWarnings("rawtypes")Iterator iterInner = element.elementIterator(); iterInner.hasNext();) {Element elementInner = (Element) iterInner.next();if (elementInner.getName().equals("college")) {hm.put(elementInner.getName() + num,elementInner.getText());// 获取college节点的leader属性的值Attribute leaderAttr = elementInner.attribute("leader");if (leaderAttr != null) {String leader = leaderAttr.getValue();if (leader != null && !leader.equals("")) {hm.put(elementInner.getName() + "-"+ leaderAttr.getName() + num, leader);} else {hm.put(elementInner.getName() + "-"+ leaderAttr.getName() + num, "leader");}} else {hm.put(elementInner.getName() + "-leader" + num,"leader");}} else {hm.put(elementInner.getName() + num,elementInner.getText());}}}} catch (DocumentException e) {// TODO Auto-generated catch blocke.printStackTrace();}}
}

package demo1;import java.util.HashMap;/*** 测试Dom4jReadExmple解析的情况* * @author henuyuxiang* @since 2014.7.11*/
public class TestDom4jReadExmple {public static void main(String[] args) {try {// 获取解析完后的解析信息HashMap<String, String> hashMap;Dom4jReadExmple drb = new Dom4jReadExmple();// 遍历整个XML文件hashMap = new HashMap<String, String>();drb.iterateWholeXML("studentInfo.xml", hashMap);System.out.println("姓名\t年龄\t学院\t学院领导\t电话\t备注");for (int i = 0; i < hashMap.size(); i += 6) {int j = i / 6;System.out.print(hashMap.get("name" + j) + "\t");System.out.print(hashMap.get("student-age" + j) + "\t");System.out.print(hashMap.get("college" + j) + "\t");System.out.print(hashMap.get("college-leader" + j) + "\t");System.out.print(hashMap.get("telephone" + j) + "\t");System.out.println(hashMap.get("notes" + j) + "\t");}} catch (Exception ex) {ex.printStackTrace();}}
}