java访问xml文件

/**
 *
 */
package file;

import java.io.*;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

 

public class FileReadPropertie {

 public static void main(String args[])
     {   
           Element element=null;
           File f =new File("a.xml");
           DocumentBuilder db=null;        //documentBuilder为抽象不能直接实例化(将XML文件转换为DOM文件)
           DocumentBuilderFactory dbf=null;
       try{
         
           dbf= DocumentBuilderFactory.newInstance(); //返回documentBuilderFactory对象  
           db =dbf.newDocumentBuilder();//返回db对象用documentBuilderFatory对象获得返回documentBuildr对象

           Document dt= db.parse(f); //得到一个DOM并返回给document对象
           element = dt.getDocumentElement();//得到一个elment根元素
          
           System.out.println("根元素："+element.getNodeName()); //获得根节点

         NodeList childNodes =element.getChildNodes() ;    // 获得根元素下的子节点
    
       for (int i = 0; i < childNodes.getLength(); i++)     // 遍历这些子节点

    {      
        Node node1 = childNodes.item(i); // childNodes.item(i); 获得每个对应位置i的结点

      if ("Account".equals(node1.getNodeName()))
       {
                         // 如果节点的名称为"Account"，则输出Account元素属性type
       System.out.println("\r\n找到一篇账号. 所属区域: "   + node1.getAttributes().getNamedItem        ("type").getNodeValue() + ". ");
       NodeList nodeDetail = node1.getChildNodes();   // 获得<Accounts>下的节点
       for (int j = 0; j < nodeDetail.getLength(); j++)
        {   // 遍历<Accounts>下的节点
           Node detail = nodeDetail.item(j);    // 获得<Accounts>元素每一个节点
             if ("code".equals(detail.getNodeName()))   // 输出code
             System.out.println("卡号: " + detail.getTextContent());
              else if ("pass".equals(detail.getNodeName())) // 输出pass
                 System.out.println("密码: " + detail.getTextContent());
              else if ("name".equals(detail.getNodeName())) // 输出name
                 System.out.println("姓名: " + detail.getTextContent());
              else if ("money".equals(detail.getNodeName())) // 输出money
                  System.out.println("余额: "+ detail.getTextContent());
      
         }
       }

     }
 }

 catch(Exception e){System.out.println(e);}
    
 }
 

}

 

<?xml version="1.0" encoding="gbk"?>     
<Accounts>
<Account type="by0003">
<code>100001</code>
<pass>123</pass>
<name>李四</name>
<money>1000000.00</money>
</Account>
<Account type="hz0001">
<code>100002</code>
<pass>123</pass>
<name>张三</name>
<money>1000.00</money>
</Account>
</Accounts>