java利用dom4j递归输出所有节点

test.xml文件

<?xml version="1.0" encoding="GBK"?>
<doc>
<person>
<name>某人</name>
<adds>
<add ID="10002">
<BS>10002</BS>
<note>南昌市</note>
</add>
<add ID="">
<BS>10002</BS>
<note>空ID节点啊</note>
</add>
<add>
<BS>10002</BS>
<note>空ID节点啊</note>
</add>
<add ID="10001">
<note>深圳市</note>
</add>
</adds>
</person>
<other>
<name ID="HEHE">其它节点</name>
</other>
</doc>

 Leaf.java

package com.lushuifa.dom;

public class Leaf {
private String xpath;//
private String value;
private String domName;

public String getDomName() {
return domName;
}

public void setDomName(String domName) {
this.domName = domName;
}

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

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;
}
}

 DomUtil.java文件代码

package com.lushuifa.dom;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

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

public class DomUtil {

public Document readXML() {
Document document = null;
SAXReader saxReader = new SAXReader();
try {
document = saxReader.read("F:\\testSpace\\Dom4jTest\\src\\test.xml");
} catch (DocumentException e) {
e.printStackTrace();
}
return document;
}

/**
* 获取根元素
*
* @return
* @throws DocumentException
*/
public Element getRootElement(){
try {
Document srcdoc = this.readXML();
Element elem = srcdoc.getRootElement();
return elem;
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}

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

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

public static void main(String[] args) {
DomUtil domUtil = new DomUtil();
System.out.println("得到document对象是："+domUtil.readXML());;
Element rootElement =  domUtil.getRootElement();
List<Leaf> list = domUtil.getElementList(rootElement,new ArrayList<Leaf>());
System.out.println("list=="+list);
for (Leaf leaf : list) {
System.out.println("节点路径："+leaf.getXpath());
System.out.println("节点名称："+leaf.getDomName());
System.out.println("节点值："+leaf.getValue());
}
}
}

 测试结果：

节点路径：/doc/person/name

节点名称：name

节点值：某人

节点路径：/doc/person/adds/add/BS

节点名称：BS

节点值：10002

节点路径：/doc/person/adds/add/note

节点名称：note

节点值：南昌市

节点路径：/doc/person/adds/add/BS

节点名称：BS

节点值：10002

节点路径：/doc/person/adds/add/note

节点名称：note

节点值：空ID节点啊

节点路径：/doc/person/adds/add/BS

节点名称：BS

节点值：10002

节点路径：/doc/person/adds/add/note

节点名称：note

节点值：空ID节点啊

节点路径：/doc/person/adds/add/note

节点名称：note

节点值：深圳市

节点路径：/doc/other/name

节点名称：name

节点值：其它节点