newmessageservice.java

基于j2ee的物流软件

package com.wuliu.doservlet;

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

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.wuliu.dao.MessageInfoDAO;
import com.wuliu.entity.MessageInfo;

public class NewMessageService implements Service {

	public String doService(HttpServletRequest request,
			HttpServletResponse response) {
		/**
		 * 这是在业务管理层中显示的最新公告
		 * */
		MessageInfoDAO mdao = new MessageInfoDAO();
		List<MessageInfo> newslist = mdao.selectAllMessageInfo();
		/**
		 * 创建出存放最新公告的LIST
		 * */
		ArrayList<MessageInfo> templist = new ArrayList<MessageInfo>();
		/**
		 * 存放进最后的4条公告，即最新的公告
		 * */
		for(int i=newslist.size();i>newslist.size()-4;--i){
			MessageInfo message = newslist.get(i-1);
			templist.add(message);
		}
		/**
		 * 将要显示的内容放入REQUEST中
		 * */
		request.setAttribute("newslist",templist);
		
		return "employee/newmessage.jsp";
	}

}