/**
 * @FILE:Test.java
 * @AUTHOR:Administratorbaifan
 * @DATE:2013-4-14 下午6:23:56
 **/
package com.yehui.test;

import java.io.File;
import java.io.IOException;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;

/*******************************************
 * @COMPANY:lingan
 * @CLASS:Test
 * @DESCRIPTION:使用document方式解析xml文件
 * @AUTHOR:Administrator
 * @VERSION:v1.0
 * @DATE:2013-4-14 下午6:23:56
 *******************************************/
public class Javaxml {
	private File f;
	static StringBuffer sbf = new StringBuffer();
	/**
	 * docuemnt :xml文件的document
	 */
	private Document docuemnt;
	/**
	 * db :DocumentBuilder抽象类对象，不可以实例化，借助DocumentBuilderFactory类实例化
	 */
	private DocumentBuilder db;
	private DocumentBuilderFactory dbf;
	/**
	 * elment :根节点
	 */
	private Element elment;
	/**
	 * content :xml文件的内容
	 */
	public String content;

	public Javaxml(File f) {
		try {
			dbf = DocumentBuilderFactory.newInstance();
			db = dbf.newDocumentBuilder();
			this.f = f;
			// 解析xml文件
			this.docuemnt = db.parse(f);
			// 获得根节点
			elment = docuemnt.getDocumentElement();
		} catch (ParserConfigurationException e) {
			e.printStackTrace();
		} catch (SAXException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

	public static void main(String[] args) {
		File f = new File("a.xml");
		Javaxml jx = new Javaxml(f);
		printstr(jx.elment,"code");
		System.out.println(sbf.toString());
	}

	/**
	 * @description: 这里使用了递归的方法获取xml文件中的某个节点下的内容
	 * @author:Administrator
	 * @return:String
	 */

	public static String printstr(Node node,String nodeName) {
		// nodeName的子节点
		NodeList nodelist = null;
		nodelist = node.getChildNodes();
		if (nodeName.equals(node.getNodeName())) {
			for (int i = 0; i < nodelist.getLength(); i++) {
				// nodelist.item(i).getTextContent()获得子节点的内容
				sbf.append(nodelist.item(i).getTextContent()).append(",");
			}
		} else {
			if (nodelist != null) {
				for (int i = 0; i < nodelist.getLength(); i++) {
					Node tmp = nodelist.item(i);
					printstr(tmp,nodeName);
				}
			}

		}
		return sbf.toString();
	}
}

xml文件

<?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>

运行结果