foodorderitemservlet.java

MVC设计+jsp+servlet+sqlserver开发

package com.accp.fan.servlet;

import java.io.IOException;
import java.sql.SQLException;
import java.util.Collection;
import java.util.Iterator;
import java.util.TreeMap;

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

import com.accp.fan.dao.FoodOrderdao;
import com.accp.fan.entity.Food;
import com.accp.fan.entity.Shopcar;

public class FoodOrderItemServlet extends HttpServlet {

	/**
	 * Constructor of the object.
	 */
	public FoodOrderItemServlet() {
		super();
	}

	/**
	 * Destruction of the servlet. <br>
	 */
	public void destroy() {
		super.destroy(); // Just puts "destroy" string in log
		// Put your code here
	}

	/**
	 * The doGet method of the servlet. <br>
	 * 
	 * This method is called when a form has its tag value method equals to get.
	 * 
	 * @param request
	 *            the request send by the client to the server
	 * @param response
	 *            the response send by the server to the client
	 * @throws ServletException
	 *             if an error occurred
	 * @throws IOException
	 *             if an error occurred
	 */
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		this.doPost(request, response);

	}

	/**
	 * The doPost method of the servlet. <br>
	 * 
	 * This method is called when a form has its tag value method equals to
	 * post.
	 * 
	 * @param request
	 *            the request send by the client to the server
	 * @param response
	 *            the response send by the server to the client
	 * @throws ServletException
	 *             if an error occurred
	 * @throws IOException
	 *             if an error occurred
	 */
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		// 从界面得到用户信息
		String customerName = request.getParameter("customerName");
		String address = request.getParameter("address");
		String zipCode = request.getParameter("zipCode");
		String telephone = request.getParameter("telephone");
		String movePhone = request.getParameter("movePhone");
		String notice = request.getParameter("notice");
		// 从session中得到总价格
		HttpSession session = request.getSession();
		Shopcar car = (Shopcar) session.getAttribute("car");
		if (car == null) {
			session.setAttribute("error", "没毛病吧,不买 东西就给钱！~~");
			response.sendRedirect(request.getContextPath() + "/errorInfo.jsp");
			return;
		} else {
			double totalPrice = car.getTotalPrice();
			try {
				// 调用dao层的方法添加订单
				FoodOrderdao dao = new FoodOrderdao();
				int orderID = dao.addfoodOrder(customerName, address, zipCode,
						telephone, movePhone, notice, totalPrice);
				//System.out.println("orderID 是~~" + orderID);
				TreeMap<String, Food> map = car.getAllItems();
				// 遍历c集合
				Collection c =map.values();
				Iterator it=c.iterator();
				while(it.hasNext()){
					Food food=(Food)it.next();
					dao.addfoodOrderItem(orderID, food.getFoodID(), food
							.getCounter(), totalPrice);
				}
					
				
				response.sendRedirect(request.getContextPath() + "/seeYou.jsp");
			} catch (ClassNotFoundException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			} catch (SQLException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}

		}
	}

	/**
	 * Initialization of the servlet. <br>
	 * 
	 * @throws ServletException
	 *             if an error occure
	 */
	public void init() throws ServletException {
		// Put your code here
	}

}