用JDOM读写XML

JDOM 包 可以从 http://www.jdom.org/dist/binary/ 下载。

TestJDOM.java:
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package com.hanweb.jcms;

import org.jdom.*;
import org.jdom.output.*;
import org.jdom.JDOMException;
import org.jdom.input.SAXBuilder;
import JAVA.io.IOException;
import JAVA.util.*;

/**
 * @author longware
 * @version 1.0
 */
public class TestJDOM{
	public static void main(String[] args) {
		TestJDOM jd = new TestJDOM();
		//jd.write();
		jd.read();
	}

	public void read() {

		SAXBuilder builder = new SAXBuilder();

		try {
			Document doc = builder.build("C:/longware.xml");
			Element root = doc.getRootElement();
			listChildren(root, 0);
			System.out.println("XML well-formed.");
		}
		catch (JDOMException e) {
			System.out.println("XML not well-formed.");
			System.out.println(e.getMessage());
		} catch (IOException e) {
			System.out.println("Could not check ");
			System.out.println(" because " + e.getMessage());
		}
	}

	public static void listChildren(Element current, int depth) {

		printSpaces(depth);
		String eName = current.getName();
		String id = eName.equals("SmsApp") ? "(id="
				+ current.getAttributeValue("id") + ")" : "";
		String val = !eName.equals("SmsApp") ? "[" + current.getTextTrim()
				+ "]" : "";
		System.out.println(eName + id + val);
		List children = current.getChildren();
		Iterator iterator = children.iterator();
		while (iterator.hasNext()) {
			Element child = (Element) iterator.next();
			listChildren(child, depth + 1);
		}
	}

	private static void printSpaces(int n) {
		for (int i = 0; i < n; i++) {
			System.out.print(' ');
		}
	}

	public void write() {
		Element WebService = new Element("WebService");

		Element SmsApp = new Element("SmsApp");
		SmsApp.setAttribute("id", "6");

		Element WsURL = new Element("WsURL");
		WsURL.setText("http://blog.csdn.net/ljcao/Rss.aspx");
		Element UnitNo = new Element("UnitNo");
		UnitNo.setText("0000");
		Element Appid = new Element("Appid");
		Appid.setText("8");
		Element UserName = new Element("UserName");
		UserName.setText("admin");
		Element Password = new Element("Password");
		Password.setText("123456");
		Element OuterIP = new Element("OuterIP");
		OuterIP.setText("222.111.93.1");
		Element SmssType = new Element("SmssType");
		SmssType.setText("1");

		WebService.addContent(SmsApp);
		SmsApp.addContent(WsURL);
		SmsApp.addContent(UnitNo);
		SmsApp.addContent(Appid);
		SmsApp.addContent(UserName);
		SmsApp.addContent(Password);
		SmsApp.addContent(OuterIP);
		SmsApp.addContent(SmssType);

		XMLOutputter outputter = new XMLOutputter();
		Format f = Format.getPrettyFormat();
		f.setEncoding("GBK");
		f.setIndent("  ");
		f.setLineSeparator("\r\n");

		try {
			outputter.setFormat(f);
			outputter.output(WebService, System.out);
		} catch (IOException e) {
			System.err.println(e);
		}
	}
}


longware.xml:
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<?xml version="1.0" encoding="GBK"?>
<WebService>
  <SmsApp id="6">
    <WsURL>http://blog.csdn.net/ljcao/Rss.aspx</WsURL>
    <UnitNo>0000</UnitNo>
    <Appid>1</Appid>
    <UserName>admin</UserName>
    <Password>123456</Password>
    <OuterIP>222.23.56.1</OuterIP>
    <SmssType>1</SmssType>
  </SmsApp>
  <SmsApp id="8">
    <WsURL>http://www.jdom.org/dist/binary/</WsURL>
    <UnitNo>0000</UnitNo>
    <Appid>2</Appid>
    <UserName>test</UserName>
    <Password>654467</Password>
    <OuterIP>111.136.43.1</OuterIP>
    <SmssType>0</SmssType>
  </SmsApp>
</WebService>