一、Dom4J解析

　　Dom4J解析代码

1 package dom4j; 2  3 import java.io.File; 4 import java.util.Iterator; 5 import java.util.List; 6  7 import org.dom4j.Attribute; 8 import org.dom4j.Document; 9 import org.dom4j.DocumentException;10 import org.dom4j.Element;11 import org.dom4j.io.SAXReader;12 13 public class testDom4J {14 15     public static void main(String[] args) {16 17         try {18 19             File file = new File("/home/ybxxszl/Java Workspace/test/src/user.xml");// 获取File对象20             SAXReader reader = new SAXReader();// 获取SAXReader对象21             Document document = reader.read(file);// 获取Document对象22             Element list = document.getRootElement();// 获取根节点23             Iterator
     
       it1 = list.elementIterator();// 获取根节点下子节点的迭代器24             while (it1.hasNext()) {25                 Element user = it1.next();// 获取根节点下子节点26                 List
      
        userAttrs = user.attributes();// 获取根节点下子节点的属性名和属性值27                 for (Attribute attribute : userAttrs) {28                     System.out.println("属性名" + attribute.getName());29                     System.out.println("属性值" + attribute.getValue());30                 }31                 Iterator
       
         it2 = user.elementIterator();// 获取根节点下子节点下子节点的迭代器32                 while (it2.hasNext()) {33                     Element userChild = it2.next();// 获取根节点下子节点下子节点34                     System.out.println("节点名：" + userChild.getName());35                     System.out.println("节点值：" + userChild.getStringValue());36                 }37             }38 39         } catch (DocumentException e) {40             e.printStackTrace();41         }42 43     }44 45 }
       
      
     

二、SAX解析

　　User

1 package sax; 2  3 public class User { 4  5     private String id; 6     private String account; 7     private String password; 8     private String name; 9 10     public String getId() {11         return id;12     }13 14     public void setId(String id) {15         this.id = id;16     }17 18     public String getAccount() {19         return account;20     }21 22     public void setAccount(String account) {23         this.account = account;24     }25 26     public String getPassword() {27         return password;28     }29 30     public void setPassword(String password) {31         this.password = password;32     }33 34     public String getName() {35         return name;36     }37 38     public void setName(String name) {39         this.name = name;40     }41 42     @Override43     public String toString() {44         return "User [id=" + id + ", account=" + account + ", password=" + password + ", name=" + name + "]";45     }46 47 }

　　SAX解析代码

1 package sax; 2  3 import java.io.File; 4 import java.util.List; 5  6 import javax.xml.parsers.SAXParser; 7 import javax.xml.parsers.SAXParserFactory; 8  9 public class testSax {10 11     public static void main(String[] args) {12 13         try {14 15             File file = new File("/home/ybxxszl/Java Workspace/test/src/user.xml");16             SAXParserFactory factory = SAXParserFactory.newInstance();17             SAXParser parser = factory.newSAXParser();18             SAXParserHandler handler = new SAXParserHandler();19             parser.parse(file, handler);20             List
     
       list = handler.getList();21             for (int i = 0; i < list.size(); i++) {22                 System.out.println(list.get(i).toString());23             }24 25         } catch (Exception e) {26             e.printStackTrace();27         }28 29     }30 31 }
     

1 package sax; 2  3 import java.util.ArrayList; 4 import java.util.List; 5  6 import org.xml.sax.Attributes; 7 import org.xml.sax.SAXException; 8 import org.xml.sax.helpers.DefaultHandler; 9 10 public class SAXParserHandler extends DefaultHandler {11 12     private String value = null;13     private User user = null;14 15     private List
     
       list = new ArrayList
      
       ();16 17     public List
       
         getList() {18         return list;19     }20 21     @Override22     public void startDocument() throws SAXException {23         super.startDocument();24         System.out.println("SAX解析开始");25     }26 27     @Override28     public void endDocument() throws SAXException {29         super.endDocument();30         System.out.println("SAX解析结束");31     }32 33     @Override34     public void startElement(String url, String localName, String qName, Attributes attributes) throws SAXException {35         super.startElement(url, localName, qName, attributes);36         if (qName.equals("user")) {37             user = new User();38             for (int i = 0; i < attributes.getLength(); i++) {39                 System.out.println("属性名：" + attributes.getQName(i) + " 属性值：" + attributes.getValue(i));40             }41         } else if (!qName.equals("list") && !qName.equals("user")) {42             System.out.print("节点名：" + qName);43         }44     }45 46     @Override47     public void endElement(String uri, String localName, String qName) throws SAXException {48         super.endElement(uri, localName, qName);49         if (qName.equals("user")) {50             list.add(user);51             user = null;52         } else if (qName.equals("id")) {53             user.setId(value);54         } else if (qName.equals("account")) {55             user.setAccount(value);56         } else if (qName.equals("password")) {57             user.setPassword(value);58         } else if (qName.equals("name")) {59             user.setName(value);60         }61     }62 63     @Override64     public void characters(char[] c, int start, int length) throws SAXException {65         super.characters(c, start, length);66         value = new String(c, start, length);67         if (!value.trim().equals("")) {68             System.out.println(" 节点值：" + value);69         }70     }71 }
       
      
     

　　XML文件

1 
      2 
     
       3     
      
        4         
       
        1
        5         
       
        账号1
        6         
       
        密码1
        7         
       
        姓名1
        8     
       9     
      
       10         
       
        2
       11         
       
        账号2
       12         
       
        密码2
       13         
       
        姓名2
       14     
      15     
      
       16         
       
        3
       17         
       
        账号3
       18         
       
        密码3
       19         
       
        姓名3
       20     
      21