src/org/wdl/hotelAppTest/servlet/FoodServlet.java

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package org.wdl.hotelAppTest.servlet;

import org.wdl.hotelAppTest.dao.HotDao;
import org.wdl.hotelAppTest.dao.HotDaoImpl;
import org.wdl.hotelAppTest.service.FoodService;
import org.wdl.hotelAppTest.service.FoodServiceImpl;
import org.wdl.hotelAppTest.service.FoodTypeService;
import org.wdl.hotelAppTest.service.FoodTypeServiceImpl;
import org.wdl.hotelTest.bean.Food;
import org.wdl.hotelTest.bean.FoodType;
import org.wdl.hotelTest.bean.Hot;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.List;

/**
 * Servlet implementation class MenuListServlet
 */
@WebServlet("/app/food.do")
public class FoodServlet extends HttpServlet {
    private static final long serialVersionUID = 1L;

    /**
     * @see HttpServlet#HttpServlet()
     */
    public FoodServlet() {
        super();
        // TODO Auto-generated constructor stub
    }

    /**
     * @see HttpServlet#service(HttpServletRequest request, HttpServletResponse response)
     */
    @Override
    protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

        //① 查询所有未删除的菜系名字
        HotDao hotDao = new HotDaoImpl();
        // 主菜热销
        List<Hot> hots1 = hotDao.findByHotType(1);
        // 其他热销
        List<Hot> hots2 = hotDao.findByHotType(2);

        request.setAttribute("hots1", hots1);
        request.setAttribute("hots2", hots2);

        // 主页菜品1，2，3
        FoodService foodService = new FoodServiceImpl();
        request.setAttribute("food1", foodService.findById(1));
        request.setAttribute("food2", foodService.findById(2));
        request.setAttribute("food3", foodService.findById(3));
        request.getRequestDispatcher("/WEB-INF/jsp/app/food.jsp").forward(request, response);
    }

}