OrderNowServlet.java

package cfy.servlet;

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.SQLException;
import java.util.*;
import java.text.SimpleDateFormat;

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 javax.servlet.http.HttpSession;

import cfy.connection.DbCon;
import cfy.connection.ValidateCard;
import cfy.dao.*;
import cfy.model.*;

@WebServlet("/order-now")
public class OrderNowServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;

	protected void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		response.setContentType("text/html;charset=UTF-8");
		try (PrintWriter out = response.getWriter()) {
			SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
			Date date = new Date();

			User auth = (User) request.getSession().getAttribute("auth");

			if (auth != null) {
				String productId = request.getParameter("id");
				int productQuantity = Integer.parseInt(request.getParameter("quantity"));
				if (productQuantity <= 0) {
					productQuantity = 1;
				}
				Order orderModel = new Order();
				orderModel.setId(Integer.parseInt(productId));
				orderModel.setUid(auth.getId());
				orderModel.setQunatity(productQuantity);
				orderModel.setDate(formatter.format(date));

				OrderDao orderDao = new OrderDao(DbCon.getConnection());
				boolean result = orderDao.insertOrder(orderModel);
				if (result) {
					ArrayList<Cart> cart_list = (ArrayList<Cart>) request.getSession().getAttribute("cart-list");
					if (cart_list != null) {
						for (Cart c : cart_list) {
							if (c.getId() == Integer.parseInt(productId)) {
								cart_list.remove(cart_list.indexOf(c));
								break;
							}
						}
					}
					response.sendRedirect("orders.jsp");
				} else {
					out.println("order failed");
				}
			} else {
				response.sendRedirect("login.jsp");
			}

		} catch (ClassNotFoundException | SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

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

		HttpSession session = request.getSession();
		String card = request.getParameter("cardNumber");

		ValidateCard cardV = new ValidateCard();
		boolean valid = false;
		try {
			valid = cardV.validCC(card);
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}

		if (valid) {

			ArrayList<Cart> cart_list = (ArrayList<Cart>) session.getAttribute("cart-list");
			User user = (User) session.getAttribute("auth");
			for (Cart c:cart_list) {
				try {
					new OrderDao(DbCon.getConnection()).insertOrder(new Order(user.getId(), 100, c.getId()));
				} catch (ClassNotFoundException | SQLException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
				
			}
			session.removeAttribute("cart-list");
			
			response.sendRedirect("index.jsp");

		} else {
			response.getWriter().write("card invalid");
		}

//		response.getWriter().write(cart_list.toString());

	}

}