xmlmenuquerydao.java

使用Eclipse开发的基于struts的银行信用管理网站

package com.webwork.dao;

import java.io.File;
import java.util.ArrayList;
import java.util.List;

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

import com.webwork.struts.form.LoginInfoForm;

public class XMLMenuQueryDao {
	/*--从xml中获取菜单信息--------------------------------------------------------
	*/
	StringBuffer menuListString = new StringBuffer();
	public StringBuffer getMenu(File file) throws DocumentException
	{
		ArrayList list = new ArrayList();
		Document doc = null;
		Element element = null;
		SAXReader reader = new SAXReader(); //dom4j读取文件IO流对象
		doc = reader.read(file);
		Element root = doc.getRootElement();
		Element menuInfo = root.element("MenuList");                //获取菜单根节点
		getMenuLayOut(menuInfo);
		return menuListString;
	}
	private void getMenuLayOut(Element element)
	{
		
		
		Element ement = null;
		List elements = element.elements();
		int size = elements.size();
		String textOut = "";
		if(size==0)
		{
			return;                                                 //子节点集为空，返回
		}
		textOut = "<ul>";
		menuListString.append(textOut);
		for(int i = 0;i<size;i++)
		{
			ement = (Element)elements.get(i);
			
			if(!ement.attributeValue("URL").equals(""))             //有URL，建立超链接
			{
				
				textOut = "<li><img class=\"childNode\"><a href=\"#\" onClick=\"link(\'" +
				        ement.attributeValue("URL")+
						"\',\'Frame\')\">" +
						ement.attributeValue("MenuName") +
						"</a></li>";
				
				
				menuListString.append(textOut);
			}
			else                                                   //没有URL，显示菜单项
			{
				
				textOut = "<li><img class=\"childNode\">" +
				ement.attributeValue("MenuName") +
						"</li>";
				
				
				menuListString.append(textOut);
			}
			getMenuLayOut(ement);                                  //查询子节点
			
		}
		
		textOut = "</ul>";

		menuListString.append(textOut);
	}
}