dom4j將xml字符串遞歸遍歷成Map

package test;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import org.dom4j.Attribute;
import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;

public class XmlStr {

    public static void main(String[] args) throws Exception {

        String xmlStr = "<returnInfo><resultInfo><returnCode>SUC</returnCode><codeDesc>成功</codeDesc></resultInfo><routeInfo><maxRate>2048</maxRate></routeInfo></returnInfo>";
        List<Map<String, String>> resultList = iterateWholeXML(xmlStr);

        Map<String, String> retMap = new HashMap<String, String>();
        for (int i = 0; i < resultList.size(); i++) {
            Map map = (Map) resultList.get(i);

            for (Iterator iterator = map.keySet().iterator(); iterator.hasNext();) {
                String key = (String) iterator.next();
                retMap.put(key, (String) map.get(key));

            }
        }
        System.out.println("reMap" + retMap);

    }

    /**
     * 遞歸解析任意的xml 遍歷每個節點和屬性
     * 
     * @param xmlStr
     */
    public static List<Map<String, String>> iterateWholeXML(String xmlStr) {

        List<Map<String, String>> list = new ArrayList<Map<String, String>>();

        try {
            Document document = DocumentHelper.parseText(xmlStr);
            Element root = document.getRootElement();
            recursiveNode(root, list);
            return list;
        } catch (DocumentException e) {
            e.printStackTrace();
        }
        return null;
    }

    /**
     * 遞歸遍歷所有的節點獲得對應的值
     * 
     * @param
     */
    private static void recursiveNode(Element root, List<Map<String, String>> list) {

        // 遍歷根結點的所有孩子節點
        HashMap<String, String> map = new HashMap<String, String>();
        for (Iterator iter = root.elementIterator(); iter.hasNext();) {
            Element element = (Element) iter.next();
            if (element == null)
                continue;
            // 獲取屬性和它的值
            for (Iterator attrs = element.attributeIterator(); attrs.hasNext();) {
                Attribute attr = (Attribute) attrs.next();
                System.out.println(attr);
                if (attr == null)
                    continue;
                String attrName = attr.getName();
                System.out.println("attrname" + attrName);
                String attrValue = attr.getValue();

                map.put(attrName, attrValue);
            }
            // 如果有PCDATA，則直接提出
            if (element.isTextOnly()) {
                String innerName = element.getName();
                String innerValue = element.getText();

                map.put(innerName, innerValue);
                list.add(map);
            } else {
                // 遞歸調用
                recursiveNode(element, list);
            }
        }
    }

}