怕忘了，給自己看的

jdom的工具類

package com.cernet.util;


import java.io.ByteArrayInputStream;
import java.io.IOException;

import org.jdom.Document;
import org.jdom.Element;
import org.jdom.JDOMException;
import org.jdom.input.SAXBuilder;
import org.jdom.output.Format;
import org.jdom.output.XMLOutputter;



public class JDomUtils
{

	public JDomUtils()
	{
	}

	public static Element createRoot(String rootName)
	{
		Element root = new Element(rootName);
		return root;
	}

	public static Element addChild(Element parent, String childName)
	{
		Element child = new Element(childName);
		parent.addContent(child);
		return child;
	}

	public static void addChild(Element parent, Element childName)
	{
		parent.addContent(childName);
	}

	public static Element addChild(Element parent, String childName,
			String childValue)
	{
		Element child = new Element(childName);
		child.setText(childValue != null ? childValue : "");
		parent.addContent(child);
		return child;
	}

	public static String root2StringWithoutXMLDeclaration(Element root,
			String encoding) throws JDOMException, IOException
	{
		return root2StringWithoutXMLDeclaration(root, encoding, false);
	}

	public static String root2StringWithoutXMLDeclaration(Element root,
			String encoding, boolean formated) throws JDOMException,
			IOException
	{
		XMLOutputter outputter = new XMLOutputter();
		Format newFormat = Format.getPrettyFormat();
		newFormat.setEncoding(encoding);
		newFormat.setIndent("    ");
		newFormat.setExpandEmptyElements(true);
		outputter.setFormat(newFormat);
		if (formated)
		{
			String msg = outputter.outputString(root);
			root = string2Root(msg, encoding);
		}
		return outputter.outputString(root);
	}

	public static String root2String(Element root, String encoding)
			throws JDOMException, IOException

	{
		return root2String(root, encoding, false);
	}

	public static String root2String(Element root, String encoding,
			boolean formated) throws JDOMException, IOException

	{
		XMLOutputter outputter;
		Document document;
		outputter = new XMLOutputter();
		Format newFormat = Format.getPrettyFormat();
		newFormat.setEncoding(encoding);
		newFormat.setIndent("    ");
		newFormat.setTextMode(org.jdom.output.Format.TextMode.NORMALIZE);
		outputter.setFormat(newFormat);
		if (formated)
		{
			String msg = outputter.outputString(root);
			root = string2Root(msg, encoding);
		}
		document = null;
		if (root.getParent() != null)
			root.detach();
		document = new Document(root);
		return outputter.outputString(document);

	}

	public static Element string2Root(String content, String encoding)
			throws JDOMException, IOException

	{
		Document document = string2Document(content, encoding);
		return document.getRootElement();
	}

	private static Document string2Document(String content, String encoding)
			throws JDOMException, IOException

	{
		int startPoint = content.indexOf("<?xml");
		if (-1 != startPoint)
			content = content.substring(startPoint);
		if (-1 == content.indexOf("<?xml"))
			content = (new StringBuilder("<?xml version=\"1.0\" encoding = \"")).append(encoding).append("\"?>").append(content).toString();
		ByteArrayInputStream bais;
		SAXBuilder builder;
		bais = new ByteArrayInputStream(content.getBytes(encoding));
		builder = new SAXBuilder();
		return builder.build(bais);
	}
}
 

做測試用的實體類

package com.cernet.util;

public class Book {
	private String counts;
	private String startTime;
	private String endTime;
	private String success;
	private String failure;
	private String downUrl;
	//set and get method
	public String getCounts() {
		return counts;
	}
	public void setCounts(String counts) {
		this.counts = counts;
	}
	public String getStartTime() {
		return startTime;
	}
	public void setStartTime(String startTime) {
		this.startTime = startTime;
	}
	public String getEndTime() {
		return endTime;
	}
	public void setEndTime(String endTime) {
		this.endTime = endTime;
	}
	public String getSuccess() {
		return success;
	}
	public void setSuccess(String success) {
		this.success = success;
	}
	public String getFailure() {
		return failure;
	}
	public void setFailure(String failure) {
		this.failure = failure;
	}
	public String getDownUrl() {
		return downUrl;
	}
	public void setDownUrl(String downUrl) {
		this.downUrl = downUrl;
	}
}
 

使用JDOM工具類

package com.cernet.util;

import java.io.IOException;

import org.jdom.Element;
import org.jdom.JDOMException;

public class UseJDomUtilTest {

	/**
	 * @param args
	 * @throws IOException 
	 * @throws JDOMException 
	 */
	public static void main(String[] args) throws JDOMException, IOException {
		//將Java物件裡的值轉為XML中的結點
		Book book = new Book();
		book.setCounts("20");
		book.setDownUrl("http://localhost:8080/aaa.xls");
		book.setStartTime("2012-09-09 00:11:11");
		book.setEndTime("2012-09-09 00:11:12");	
		book.setFailure("15");
		book.setSuccess("5");
		String xml = entityToXml(book);
		System.out.println(xml);
		
		//將xml ->轉化為實體類中的物件
		Element responseDataElement = JDomUtils.string2Root(xml, "utf-8");
		Element returnMessageElement =  responseDataElement.getChild("returnMessage");
		Element bookElement =  returnMessageElement.getChild("Book");
		String  counts =  bookElement.getChildTextTrim("counts");
		String  downUrl =  bookElement.getChildTextTrim("downUrl");
		String  startTime =  bookElement.getChildTextTrim("startTime");
		String  endTime =  bookElement.getChildTextTrim("endTime");
		String  success =  bookElement.getChildTextTrim("success");
		String  failure =  bookElement.getChildTextTrim("failure");
		//
		Book bookNew = new Book();
		bookNew.setCounts(counts);
		bookNew.setDownUrl(downUrl);
		bookNew.setStartTime(startTime);
		bookNew.setEndTime(endTime);
		bookNew.setSuccess(success);
		bookNew.setFailure(failure);
		System.out.println("Counts="+bookNew.getCounts());
		System.out.println("DownUrl="+bookNew.getDownUrl());
		System.out.println("StartTime="+bookNew.getStartTime());
		System.out.println("EndTime="+bookNew.getEndTime());
		System.out.println("Success="+bookNew.getSuccess());
		System.out.println("Failure="+bookNew.getFailure());
		
	}
	
	public static String entityToXml(Book book) throws JDOMException, IOException{
		Element responseData = JDomUtils.createRoot("responseData");
		JDomUtils.addChild(responseData, "returnCode","00001");
		Element returnMessage =JDomUtils.addChild(responseData, "returnMessage");
		Element bookElement = JDomUtils.addChild(returnMessage, "Book");
		JDomUtils.addChild(bookElement, "counts",book.getCounts());
		JDomUtils.addChild(bookElement, "downUrl",book.getDownUrl());
		JDomUtils.addChild(bookElement, "startTime",book.getStartTime());
		JDomUtils.addChild(bookElement, "endTime",book.getEndTime());
		JDomUtils.addChild(bookElement, "success",book.getSuccess());
		JDomUtils.addChild(bookElement, "failure",book.getFailure());
		String xml = JDomUtils.root2String(responseData, "utf-8");
		return xml;
	}
	

}