supplypagecountaction.java

老牌java开发的物流管理系统 详细的我也没有怎么看 好像是恒基的

package com.wl.actionimpl;

import java.util.List;

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

import com.wl.action.Action;
import com.wl.dao.EmployeeinfoDAO;
import com.wl.dao.SupplyDAO;
import com.wl.entity.EmployeeInfo;
import com.wl.entity.Supply;

public class SupplyPageCountAction implements Action {

	public String doExcute(HttpServletRequest request,
			HttpServletResponse response) {
		SupplyDAO s = new SupplyDAO();
		int page=0;
		if(request.getParameter("page")!=null){
			page = Integer.parseInt(request.getParameter("page"));
		}
		List<Supply> list = s.selectSupplyPage(4, page);
		request.setAttribute("list",list);
		int count=s.getPageNum(4)-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 "/fengbo/selectsupply.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 "/fengbo/selectsupply.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 "/fengbo/selectsupply.jsp";
    }
}