Java递归遍历XML所有元素

 

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

import java.util.*;

/**
* Created by IntelliJ IDEA.

* User: leizhimin

* Date: 2008-4-14 14:02:12

* Note: 递归遍历XML所有元素
*/
public class XmlTest {

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

    //要测试的xml对象
    private static String srcXml = "\n" +
            "\n" +
            "    \n" +
            "        某人\n" +
            "                    \n" +
            "            \n" +
            "                10002\n" +
            "                西安市太白路\n" +
            "            \n" +
            "            \n" +
            "                10002\n" +
            "                空ID节点啊\n" +
            "            \n" +
            "            \n" +
            "                10002\n" +
            "                空ID节点啊\n" +
            "            \n" +
            "\t\t\t\n" +
            "\t\t\t\t\n" +
            "                西安市太白路2\n" +
            "            \n" +
            "\t\t\n" +
            "    \n" +
            "    \n" +
            "        ASDF\n" +
            "    \n" +
            "";

    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内容------------");
        System.out.println(srcXml);
        System.out.println("-----------解析结果------------");
        System.out.println(x);

    }

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

    /**
     * 递归遍历方法
     *
     * @param element
     */
    public void getElementList(Element element) {
        List elements = element.elements();
        if (elements.size() == 0) {
            //没有子元素
            String xpath = element.getPath();
            String value = element.getTextTrim();
            elemList.add(new Leaf(xpath, value));
        } else {
            //有子元素
            for (Iterator it = elements.iterator(); it.hasNext();) {
                Element elem = (Element) it.next();
                //递归遍历
                getElementList(elem);
            }
        }
    }

    public String getListString(List elemList) {
        StringBuffer sb = new StringBuffer();
        for (Iterator it = elemList.iterator(); it.hasNext();) {
            Leaf leaf = it.next();
            sb.append(leaf.getXpath()).append(" = ").append(leaf.getValue()).append("\n");
        }
        return sb.toString();
    }
}

    /**
    * xml节点数据结构
    */
class Leaf {
    private String xpath;         //
    private String value;

    public Leaf(String xpath, String value) {
        this.xpath = xpath;
        this.value = value;
    }

    public String getXpath() {
        return xpath;
    }

    public void setXpath(String xpath) {
        this.xpath = xpath;
    }

    public String getValue() {
        return value;
    }

    public void setValue(String value) {
        this.value = value;
    }
}

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