goodsmenutag.java

java web开发技术方案宝典

package com.yxq.menu;

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

import javax.servlet.http.HttpSession;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.JspWriter;
import javax.servlet.jsp.tagext.TagSupport;

import com.yxq.tools.MyTools;

public class goodsMenuTag extends TagSupport {

	public int doStartTag() throws JspException {
		HttpSession session=pageContext.getSession();
		String selectmenu=(String )session.getAttribute("selectmenu");
		if(selectmenu==null)
			selectmenu="";		
		List menulist=(ArrayList)session.getAttribute("menulist");
		JspWriter jspwriter=pageContext.getOut();
		
		try {
			jspwriter.write("<table border='0' width='170' cellspacing='2' bordercolor='#BEC7CE' bordercolorlight='#BEC7CE' bordercolordark='white'>");
			//jspwriter.write("<tr height='35'><td colspan='2' align='center' bgcolor='#F0F0F0' style='border:1 solid' width='180'><b>[今日]</b>&nbsp;"+MyTools.getNowTime()+ "</td></tr>");
			if(menulist==null||menulist.size()==0){
				jspwriter.write("<tr><td align='center' colspan='2'>没有菜单显示！</td></tr>");
				System.out.println("功能列表为空！");
			}
			else{
				for(int i=0;i<menulist.size();i++){
					goodsMenuSingle menusingle=(goodsMenuSingle)menulist.get(i);
					if(selectmenu.equals(menusingle.getMenuId())){
						jspwriter.write("<tr height='35'>");
						jspwriter.write("<td style='border:1 solid' width='30' align='center'><img src='"+menusingle.getMenuPic()+"'></td>");
						jspwriter.write("<td style='border:1 solid;text-indent:15pt' bgcolor='#CAD6E2' onMouseOver=\"this.bgColor=\'#DEE7EE\'\" onMouseOut=\"this.bgColor=\'#CAD6E2\'\"><b><a href='"+menusingle.getMenuAction()+"'>"+menusingle.getMenuName()+"</a></b></td>");
						jspwriter.write("</tr>");
					}
					else{
						jspwriter.write("<tr height='35'>");
						jspwriter.write("<td style='border:1 solid' width='30' align='center'><img src='"+menusingle.getMenuPic()+"'></td>");
						jspwriter.write("<td style='border:1 solid;text-indent:20pt' bgcolor='#DEE7EE' onMouseOver=\"this.bgColor=\'#CAD6E2\'\" onMouseOut=\"this.bgColor=\'#DEE7EE\'\"><a href='"+menusingle.getMenuAction()+"'>"+menusingle.getMenuName()+"</a></td>");
						jspwriter.write("</tr>");
					}
				}
			}
			jspwriter.write("</table>");
		} catch (IOException e) {
			e.printStackTrace();
		}		
		return SKIP_BODY;
	}
}