Dom4j递归遍历XML所有元素-dom4j解析xml字符串

目标：使用JOM4j遍历所有的元素节点，并且取出来其中的值，结果打印到控制台。源代码如下：本程序依赖DOM4j包。

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

//    private static Map xmlmap = new HashMap(); 
    //存储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; 
    } 
}

运行结果： -----------原xml内容------------

 
 
     
        某人 
                     
             
                10002 
                西安市太白路 
             
             
                10002 
                空ID节点啊 
             
             
                10002 
                空ID节点啊 
             
       
     
                西安市太白路2 
             
   
     
     
        ASDF 
     
 
-----------解析结果------------ 
/doc/person/name = 某人 
/doc/person/adds/add/BS = 10002 
/doc/person/adds/add/note = 西安市太白路 
/doc/person/adds/add/BS = 10002 
/doc/person/adds/add/note = 空ID节点啊 
/doc/person/adds/add/BS = 10002 
/doc/person/adds/add/note = 空ID节点啊 
/doc/person/adds/add/*[name()='BS'] =  
/doc/person/adds/add/note = 西安市太白路2 
/doc/other/name = ASDF

Process finished with exit code 0 可以发现，有很多xpath相同的值域。

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