newsshowservice.java

基于j2ee的物流软件

package com.wuliu.doservlet;

import java.util.List;

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

import com.wuliu.dao.NewsInfoDAO;
import com.wuliu.entity.NewsInfo;

public class NewsShowService implements Service {

	public String doService(HttpServletRequest request,
			HttpServletResponse response) {
		NewsInfoDAO ndao = new NewsInfoDAO();
		int	page = 0;
		if(request.getParameter("page")!= null){
			page = Integer.parseInt(request.getParameter("page"));
		}
		List<NewsInfo> list = ndao.selectNewsInfoPage(3, page);
		request.setAttribute("list",list);
		int count=ndao.getPageNum(3)-1;
		int showpage=page;
		if(page>=count&&count!=0){
			request.setAttribute("forward", showpage-1);//前一页
			request.setAttribute("back", showpage);//后一页
			request.setAttribute("list", list);
			request.setAttribute("now", count+1);//当前页面
			request.setAttribute("count", count+1);
			request.setAttribute("end", count);
			
			return "/employee/news/newsShow.jsp";
		}
		if(page==0){
			request.setAttribute("forward", showpage);//前一页
			if(count<=0){
				request.setAttribute("back", showpage);//后一页	
			}else{
			request.setAttribute("back", showpage+1);//后一页
			}
			request.setAttribute("list", list);
			request.setAttribute("now", showpage+1);//当前页面
			request.setAttribute("count", count+1);
			request.setAttribute("end", count);
			
			return "/employee/news/newsShow.jsp";
		}
		request.setAttribute("forward", showpage-1);//前一页
		request.setAttribute("back", showpage+1);//后一页
		request.setAttribute("list", list);
		request.setAttribute("now", showpage+1);//当前页面
		request.setAttribute("count", count+1);
		request.setAttribute("end", count);
		
		return "/employee/news/newsShow.jsp";
	}
}