遞歸遍歷XML所有節點

package xml;
import org.dom4j.Document;
import org.dom4j.DocumentHelper;
import org.dom4j.DocumentException;
import org.dom4j.Element;

import java.util.*;

/**
 * @author zouhailin
 * 2013-7-5
 */
public class XmlTest {

//    private static Map<String, String> xmlmap = new HashMap<String, String>();
    //存儲xml元素信息的容器
    private static List<String> elemList = new ArrayList<String>();

    //要測試的xml對象
    private static String srcXml = "<?xml version=\"1.0\" encoding=\"GBK\"?>\n" +
            "<doc>\n" +
            "    <person>\n" +
            "        <name>某人</name>\n" +
            "        <adds>            \n" +
            "            <add ID=\"10002\">\n" +
            "                <BS>10002</BS>\n" +
            "                <note>西安市太白路</note>\n" +
            "            </add>\n" +
            "            <add ID=\"\">\n" +
            "                <BS>10002</BS>\n" +
            "                <note>空ID節點啊</note>\n" +
            "            </add>\n" +
            "            <add>\n" +
            "                <BS>10002</BS>\n" +
            "                <note>空ID節點啊</note>\n" +
            "            </add>\n" +
            "\t\t\t<add ID=\"10001\">\n" +
            "\t\t\t\t<BS xmlns=\"10001\"/>\n" +
            "                <note>西安市太白路2</note>\n" +
            "            </add>\n" +
            "\t\t</adds>\n" +
            "    </person>\n" +
            "    <other>\n" +
            "        <name ID=\"HEHE\">ASDF</name>\n" +
            "    </other>\n" +
            "</doc>";

    public static void main(String args[]) throws DocumentException {
        XmlTest test = new XmlTest();
        Element root = test.getRootElement();
        test.getElementList(root);
        String x = test.getListString(elemList);

        System.out.println("-----------原xml內容------------");
        System.out.println(srcXml);
        System.out.println("-----------解析結果------------");
        System.out.println(x);

    }

    /**
     * 獲取根元素
     *
     * @return
     * @throws DocumentException
     */
    public Element getRootElement() throws DocumentException {
        Document srcdoc = DocumentHelper.parseText(srcXml);
        Element elem = srcdoc.getRootElement();
        return elem;
    }

    /**
     * 遞歸遍歷方法
     *
     * @param element
     */
    public void getElementList(Element element) {
        List elements = element.elements();
        if (elements.size() == 0) {
            //沒有子元素
            String xpath = element.getPath();
            String value = element.getTextTrim();
            elemList.add(xpath+" "+value);
        } else {
            //有子元素
            for (Iterator it = elements.iterator(); it.hasNext();) {
                Element elem = (Element) it.next();
                //遞歸遍歷
                getElementList(elem);
            }
        }
    }

    public String getListString(List<String> elemList) {
        StringBuffer sb = new StringBuffer();
        for (Iterator<String> it = elemList.iterator(); it.hasNext();) {
            String str = it.next();
            sb.append(str+"\n");
        }
        return sb.toString();
    }
}