addroomservlet.java

机械工业出版社的《jsp2.0动态网站开发实例指南》的源代码

import RoomPackage.Room;
import RoomPackage.RoomManager;

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

import AccountsPack.User;

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

    public void doGet (HttpServletRequest request,
		       HttpServletResponse response) {
        try {
            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;
            }

            Room newRoom = new Room();

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

            try{
                newRoom.set_roomPrice(Float.parseFloat(request.getParameter("price")));
            }
            catch(Exception ex){
                request.setAttribute("errorinfo","wrong room price info!");
                getServletConfig().getServletContext().getRequestDispatcher("/error.jsp").forward(request, response);
            }
            
            newRoom.set_roomDescription(request.getParameter("description"));
            newRoom.set_roomHasPhone("Yes".equals(request.getParameter("tele")));
            newRoom.set_roomOfferBreakfast("Yes".equals(request.getParameter("breakfast")));

            RoomManager mgr = RoomManager.get_INSTANCE();

            String result;

            if(null != request.getParameter("roomid")){
                newRoom.set_roomID((new Integer(request.getParameter("roomid"))).intValue());
                if (mgr.ModifyRoom(newRoom)){
                    result = "Congratulations, you have modified a room successfully!";
                } else {
                    result = "Sorry to tell you that the modified room can not be accepted! ";
                }
                request.setAttribute("addroomresult",result);
                getServletConfig().getServletContext().getRequestDispatcher("/addroom.jsp").forward(request, response);
            }
            else{
                if (mgr.AddRoom(newRoom)){
                    result = "Congratulations, you have added a room successfully!";
                } else {
                    result = "Sorry to tell you that the room can not be accepted! ";
                }
                request.setAttribute("addroomresult",result);
                getServletConfig().getServletContext().getRequestDispatcher("/addroom.jsp").forward(request, response);
            }

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