dom4j 解析xml问题

[土豆你个番茄]

<?xml version="1.0" encoding="shift_jis"?>
<root>
	<form xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
		arDocVersion="11" xsi:schemaLocation="urn:remedy:schemas:ars ars.xsd">
		<fields>
			<field>
				<definition xsi:type="control">
					<fieldName>AAA</fieldName>
					<fieldID>536870900</fieldID>
					<createMode>protected</createMode>
				</definition>
			</field>
			<field>
				<definition xsi:type="control">
					<fieldName>BBB</fieldName>
					<fieldID>536870901</fieldID>
					<owner>Demo</owner>
					<lastModifiedBy>Demo</lastModifiedBy>
				</definition>
			</field>
		</fields>

	</form>
</root>

给定几个节点 在xml中查找并取得他的值
如果没有 赋空值 然后写到csv中
查找值的时候是一层一层循环的 循环多次的话 查找的节点会一直被赋空值
但是我只想要一个控制就好了 现在的程序中多次循环后就多次赋值
请高手帮我看看 谢谢啊 跳了一晚上没搞定 郁闷 下面是我的代码

package com.xml;

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;

import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;

public class T3 {

	/**
	 * @param args
	 */
	private static BufferedWriter bw;
	public static String str = "";
	public static String str1 = "";

	public static void main(String[] args) {
		try {
			bw = new BufferedWriter(new OutputStreamWriter(
					new FileOutputStream(new File("D:/action_999.csv")),
					"shift-jis"));
			SAXReader sr = new SAXReader();
			Document doc = sr.read(new File("D:/incident_form.xml"));
			Element root = doc.getRootElement();

			T3 t2 = new T3();

			String[] Permission = { "fieldName", "maximumLength", "fieldID" };

			t2.getElementList(root, "field", Permission);

			// System.out.print(str);
			// bw.write(str);
			// bw.write("\n");
			bw.close();

		} catch (DocumentException e) {
			e.printStackTrace();
		} catch (UnsupportedEncodingException e) {
			e.printStackTrace();
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}

	}

	// 父节点
	public void getElementList(Element element, String parentNode,
			String[] childNode) {
		Element elem = null;
		for (Iterator iter = element.elementIterator(); iter.hasNext();) {
			elem = (Element) iter.next();
			// 递归遍历
			if (parentNode.equals(elem.getName())) {
				// System.out.println(elem.getName());
				getElementList1(elem, childNode);
			}
			if (!elem.isTextOnly()) {
				getElementList(elem, parentNode, childNode);
			}
		}
	}

	// 子节点
	public Element getElementList1(Element element, String[] childNode) {
		Element elem = null;
		String title = "";
		String value = "";
		ArrayList valuelist = new ArrayList();
		ArrayList titlelist = new ArrayList();
		Map<String, String> map = new HashMap();
		for (Iterator<Element> iter = element.elementIterator(); iter.hasNext();) {
			elem = iter.next();
			for (int i = 0; i < childNode.length; i++) {
				// 子节点在xml文件中找到后赋值
				if (childNode[i].equals(elem.getName())) {
					title = childNode[i];
					value = elem.getTextTrim();
					// 

				}
				// 没找到赋空值
				else {
					title = childNode[i];
					value = "";
					// str += title + "," + value;
					// System.out.println(str);
				}
				// str = title + "," + value;
				valuelist.add(value);
				// titlelist.add(title)
				// map.put(title, value);
			}

			// 递归遍历
			if (!elem.isTextOnly()) {
				getElementList1(elem, childNode);
			}

		}
		for (int i = 0; i < valuelist.size(); i++) {
			// System.out.println(valuelist.get(i));
		}
		// for(Iterator it=map.entrySet().iterator();it.hasNext();){
		// Map.Entry entry=(Entry) it.next();
		// System.out.println(entry.getKey()+","+entry.getValue());
		// }
		return elem;
	}

}
 

我想要的csv结果大体上是这样的
fieldName,maximumLength,fieldID
AAA,null,536870900
BBB,null,536870901