<?xml version="1.0" encoding="utf-8"?>
<Accounts>
   <Account type="type1">
         <code>100001</code>
         <pass>123</pass>
         <name>张三</name>
         <money>1000000.00</money>
   </Account>
   <Account type="type2">
       <code>100002</code>
       <pass>123</pass>
       <name>李四</name>
       <money>1000.00</money>
    </Account>
</Accounts>

package dom;

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 Dom {

    public static void main(String arge[]) {

        Element element = null;
        // 可以使用绝对路劲
        File f = new File("dom/book.xml");

        // documentBuilder为抽象不能直接实例化(将XML文件转换为DOM文件)
        DocumentBuilder db = null;
        DocumentBuilderFactory dbf = null;
        try {
            // 返回documentBuilderFactory返回工厂对象
            dbf = DocumentBuilderFactory.newInstance();
            // 返回db对象用documentBuilderFatory对象获得返回documentBuildr对象
            db = dbf.newDocumentBuilder();

            // 得到一个DOM并返回给document对象
            Document dt = db.parse(f);
            // 得到一个elment根元素
            element = dt.getDocumentElement();
            // 输出根元素的name
            System.out.println("根元素：" + element.getNodeName());//Accounts

            // 获得根元素下的子节点
            NodeList childNodes = element.getChildNodes();

            // 遍历根节点下的所有子节点
            for (int i = 0; i < childNodes.getLength(); i++) {//5 #text Account #text Account #text  会把回车算成子节点，实际只有两个子节点
                // 获得每个对应位置i的结点
                Node node1 = childNodes.item(i);
                System.out.println("分别是="+node1.getNodeName());
                if ("Account".equals(node1.getNodeName())) {
                    // 如果节点的名称为"Account"，则输出Account元素属性type
                    //NamedNodeMap   nnm = node1.getAttributes()的返回值是NamedNodeMap对象 
                    //通过节点名称返回结点对象Node node = getNamedItem("type")
                    //getNodeValue()返回的是xml节点的值
                    System.out.println("\r\n找到一篇账号. 所属区域: "
                            + node1.getAttributes().getNamedItem("type")
                                    .getNodeValue() + ". ");
                    // 获得<Accounts>下的节点
                    NodeList nodeDetail = node1.getChildNodes();
                    // 遍历<Accounts>下的节点
                    for (int j = 0; j < nodeDetail.getLength(); j++) {//9 #text  code  #text  pass #text  name  #text  money #text 
                        // 获得<Accounts>元素每一个节点
                        Node detail = nodeDetail.item(j);
                        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) {
            e.printStackTrace();
        }
    }

}

<?xml version="1.0" encoding="UTF-8"?>
  <RESULT> 
    <VALUE > 
      <NO>A1234</NO> 
      <ADDR>河南省郑州市</ADDR> 
    </VALUE> 
    <VALUE> 
      <NO>B1234</NO> 
      <ADDR>河南省郑州市二七区</ADDR> 
    </VALUE> 
</RESULT>

package dom4J;

import java.io.*;   
import java.util.*;   
import org.dom4j.*;   
import org.dom4j.io.*; 

public class Test {

    public static void main(String arge[]) {
        
        try {
            File f = new File("dom4J/a.xml");
            SAXReader reader = new SAXReader();
            //得到Document对象
            Document doc = reader.read(f);
            //获得根节点
            Element root = doc.getRootElement();
            Element foo;
            //elementIterator从根节点遍历子节点
            Iterator i = root.elementIterator("VALUE");
            while(i.hasNext()){
            //for (Iterator i = root.elementIterator("VALUE"); i.hasNext();) {
                foo = (Element) i.next();
                //得到节点的内容
                System.out.print("车牌号码:" + foo.elementText("NO"));
                System.out.println("车主地址:" + foo.elementText("ADDR"));
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

package jdom;

import java.io.File;
import java.util.List;

import org.jdom.Document;
import org.jdom.Element;
import org.jdom.input.SAXBuilder;

public class Test {
    public static void main(String arge[]) {
    
        try {
            SAXBuilder builder = new SAXBuilder();
            Document doc = builder.build(new File("jdom/a.xml"));
            Element foo = doc.getRootElement();
            List allChildren = foo.getChildren();
            for (int i = 0; i < allChildren.size(); i++) {
                System.out.print("车牌号码:"
                        + ((Element) allChildren.get(i)).getChild("NO")
                                .getText());
                System.out.println("车主地址:"
                        + ((Element) allChildren.get(i)).getChild("ADDR")
                                .getText());
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}