bookroomservlet.java

jsp2.0动态网站开发实例指南原代码

import OrderPack.Order;

import javax.servlet.http.*;
import java.util.Calendar;
import java.util.GregorianCalendar;
import java.sql.Time;

import AccountsPack.User;

public class bookRoomServlet extends HttpServlet {
    public void doPost (HttpServletRequest request,
		       HttpServletResponse response) {
        doGet(request, response);
    }

    public void doGet (HttpServletRequest request,
		       HttpServletResponse response) {
        try {
            Order order = new Order();
            HttpSession session = request.getSession(true);

            User user = (User)session.getAttribute("userBean");
            if(user == null || user.get_userName() == null){
                request.setAttribute("errorinfo","you should log in first!");
                getServletConfig().getServletContext().getRequestDispatcher("/error.jsp").forward(request, response);
                return;
            }
            else
                order.set_userName(user.get_userName());

            int roomtype = Utils.getRoomType(request.getParameter("roomtype"));
            if( -1< roomtype && roomtype<7)
                order.set_roomType(roomtype);
            else{
                request.setAttribute("errorinfo","wrong room type!");
                getServletConfig().getServletContext().getRequestDispatcher("/error.jsp").forward(request, response);
                return;
            }

            int roomCount = Utils.getRoomCount(request.getParameter("roomcount"));
            if( -1< roomCount && roomCount<11)
                order.set_roomCount(roomCount);
            else{
                request.setAttribute("errorinfo","wrong room count!");
                getServletConfig().getServletContext().getRequestDispatcher("/error.jsp").forward(request, response);
                return;
            }

            int checkinyear = Utils.getYear(request.getParameter("checkinyear"));
            int checkinmonth = Utils.getMonth(request.getParameter("checkinmonth"));
            int checkinday = Utils.getDay(request.getParameter("checkinday"));
            int checkoutyear = Utils.getYear(request.getParameter("checkoutyear"));
            int checkoutmonth = Utils.getMonth(request.getParameter("checkoutmonth"));
            int checkoutday = Utils.getDay(request.getParameter("checkoutday"));

            if(checkinyear == -1 || checkinmonth ==-1 || checkinday == -1){
                request.setAttribute("errorinfo","wrong check in time!");
                getServletConfig().getServletContext().getRequestDispatcher("/error.jsp").forward(request, response);
                return;
            }
            else if (checkoutyear == -1|| checkoutmonth ==-1|| checkoutday == -1){
                System.out.println("y"+checkoutyear+"m"+checkoutmonth+"d"+checkoutday);
                request.setAttribute("errorinfo","wrong check out time!");
                getServletConfig().getServletContext().getRequestDispatcher("/error.jsp").forward(request, response);
                return;
            }
            else{
                Calendar cldStart = new GregorianCalendar( checkinyear, checkinmonth, checkinday);
                Calendar cldEnd = new GregorianCalendar( checkoutyear, checkoutmonth, checkoutday);
                order.set_startTime(new Time(cldStart.getTime().getTime()));
                order.set_endTime(new Time(cldEnd.getTime().getTime()));
            }

            String action = request.getParameter("Submit");
            if("Modify".equals(action)){
                order.set_id((new Integer(request.getParameter("orderid"))).intValue());
            }

            String orderresult;
            if (order.Submit()) {
                orderresult = "Congratulations, you made it!";
            }else {
                orderresult = "Sorry to tell you that the order can not be accepted! ";
            }
            request.setAttribute("orderresult",orderresult);
            getServletConfig().getServletContext().getRequestDispatcher("/bookroom.jsp").forward(request, response);

        } catch (Exception ex) {
            ex.printStackTrace ();
        }
    }
}