hotelservlet.java

旅馆预订系统.采用jstl+oracle,jsp/servlet,,供初学者学习用.

package com.night.Servlet;

import java.io.IOException;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.night.DAO.*;
import com.night.DAO.Impl.*;
import com.night.Factory.*;

public class HotelServlet extends HttpServlet {

	protected void doGet(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {

		String action = request.getParameter("action");
		if(action==null) return;
		if(action.equals("insert")){
			insertHotel(request,response);
		}else if(action.equals("update")){
			
		}else if(action.equals("list")){
			listHotels(request,response);
		}

	}

	protected void doPost(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		doGet(request, response);
	}
	
	private void insertHotel(HttpServletRequest request,HttpServletResponse response){
		
		String hotelname = request.getParameter("hotelname").trim();
		String city = request.getParameter("city").trim();
		int dcount = Integer.parseInt(request.getParameter("dcount").trim());
		int dprice = Integer.parseInt(request.getParameter("dprice").trim());
		int rcount = Integer.parseInt(request.getParameter("rcount").trim());
		int rprice = Integer.parseInt(request.getParameter("rprice").trim());
		HotelDAO dao = Factory.getHotelDAOInstance();
		dao.insertHotel(hotelname, city, dcount, dprice, rcount, rprice);
		try {
			request.getRequestDispatcher("/HotelServlet?action=list").forward(request, response);
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
	
	private void listHotels(HttpServletRequest request,
			HttpServletResponse response) {
		HotelDAO dao = Factory.getHotelDAOInstance();
		List list = dao.showHotel();
		System.out.println(list);
		request.setAttribute("hotels", list);
		try {
			request.getRequestDispatcher("/hotel_insert.jsp").forward(request,
					response);
		} catch (Exception e) {
			e.printStackTrace();
		}

	}

}