dom4j的用法

import org.dom4j.*;
import org.dom4j.io.*;
public class readAndWriteXML{

public readAndWrite(){
String cons[] = new {"OA"};

// 菜单配置文件XML的统一路径表示符
String URI = null;
SAXReader saxReader = new SAXReader();
// 获得XML的Document对象
Document document = saxReader.read("menu-config.xml"));
// 得到根元素对象
Element element = (Element) document.getRootElement();
// 得到根元素对象下的CONFIG的对象集合的迭代器
Iterator iterator = element.elementIterator("CONFIG");
while (iterator.hasNext()) {
	 Element configelement = (Element) iterator.next();
     String atr = configelement.attributeValue("type");
     if (cons != null && cons.length > 0) {
		 for (int i = 0; i < cons.length; i++) {
			 if (atr.equals(cons[i])) {
				 URI = configelement.attributeValue("path");
				 element.remove(configelement);
			 }
         }
     }
}

//写入xml文件的格式
OutputFormat format = OutputFormat.createPrettyPrint();
format.setEncoding("UTF-8");

try {
	OutputStream out = new FileOutputStream("menu-config.xml"));
	XMLWriter writer = new XMLWriter(out, format);
	//写入XML文件
	writer.write(document);
	writer.close();
	out.close();
	out.flush();
} catch (Exception e) {
	e.printStackTrace();
}

}

}

public wtriteXml(List list){

Document document = DocumentHelper.createDocument();
		Element MENUS = document.addElement("MENUS");
		for(Object o : list){
			Element MENU =  MENUS.addElement("MENU");
			Menu m = (Menu)o;
			MENU.addAttribute("ID",m.getId());
			MENU.addAttribute("NAME",m.getName());
			ArrayList smlist = (ArrayList) m.getChilds(); 
			for(Object ob:smlist){
				Menu me = (Menu)ob;
				Element SUBMENU =  MENU.addElement("SUBMENU");
				SUBMENU.addAttribute("ID", me.getId());
				SUBMENU.addAttribute("NAME", me.getName());
				SUBMENU.addAttribute("URL", me.getUrl());
				SUBMENU.addAttribute("SUBPAGE", me.getSubPage());
			}		
			
		}
}

mu-config.xml 文件

<?xml version="1.0" encoding="UTF-8"?>

<MENUS> 
  <CONFIG path="menu/menu-config.xml" type="OA" name="地团OA系统"/>  
  <CONFIG path="menu/1219373822812.xml" type="1219373822828" name="三个系统"/> 
</MENUS>