Java中Dom4j解析XML

与利用DOM、SAX、JAXP机制来解析xml相比DOM4J表现更优秀，具有性能优异、功能强大和极端易用使用的特点，只要懂得DOM基本概念，就可以通过dom4j的api文档来解析xml.dom4j是一套开源的api。实际项目中，往往选择dom4j来作为解析xml的利器。

sax解析: http://www.cnblogs.com/gavinYang/p/3505543.html
jdom解析: http://www.cnblogs.com/gavinYang/p/3505530.html
dom解析: http://www.cnblogs.com/gavinYang/p/3505523.html

 1 package com.test;
 2 
 3 import java.io.File;
 4 import java.util.ArrayList;
 5 import java.util.Iterator;
 6 import java.util.List;
 7 
 8 import org.dom4j.Document;
 9 import org.dom4j.Element;
10 import org.dom4j.io.SAXReader;
11 
12 public class Dom4jXML {
13     
14     public static void main(String[] args) {
15         SAXReader saxReader = new SAXReader();
16         File file = new File("e:/People.xml");
17         
18         try {
19             Document document = saxReader.read(file);
20             Element root = document.getRootElement();
21             List<People> peoples = new ArrayList<People>(); 
22             for (Iterator iterator = root.elementIterator(); iterator.hasNext();) {
23                 People people = new People();
24                 Element peopleElement = (Element) iterator.next();
25                 people.setId(peopleElement.attribute("id").getValue());
26                 for (Iterator childIterator = peopleElement.elementIterator(); childIterator.hasNext();) {
27                     Element childPeopleElement = (Element) childIterator.next();
28                     if (childPeopleElement.getName().equals("Name")) {
29                         people.setEnglishName(childPeopleElement.attribute("en").getValue());
30                         people.setName(childPeopleElement.getText());
31                     } else if (childPeopleElement.getName().equals("Age")) {
32                         people.setAge(childPeopleElement.getText());
33                     }
34                 }
35                 peoples.add(people);
36             }
37             
38             for (People p : peoples) {  
39                 System.out.println(p.getId()+"	"+p.getName()+"	"+p.getEnglishName()+"	"+p.getAge());  
40             }  
41 
42         } catch (Exception e) {
43             // TODO Auto-generated catch block
44             e.printStackTrace();
45         }
46 
47     }
48 }

People对象

 1 package com.test;
 2 
 3 public class People {
 4     private String id;
 5     private String name;
 6     private String englishName;
 7     private String age;
 8     public String getId() {
 9         return id;
10     }
11     public void setId(String id) {
12         this.id = id;
13     }
14     public String getName() {
15         return name;
16     }
17     public void setName(String name) {
18         this.name = name;
19     }
20     public String getEnglishName() {
21         return englishName;
22     }
23     public void setEnglishName(String englishName) {
24         this.englishName = englishName;
25     }
26     public String getAge() {
27         return age;
28     }
29     public void setAge(String age) {
30         this.age = age;
31     }
32     
33 }

xml:

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <PeopleList>
 3     <People id="1">
 4         <Name en='zhangsan'>张三</Name>
 5         <Age>20</Age>
 6     </People>
 7     <People id="2">
 8         <Name en='lisi'>李四</Name>
 9         <Age>30</Age>
10     </People>
11 </PeopleList>