package cn.edu.cg.controller;

import java.io.IOException;
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 cn.edu.cg.domain.Cart;
import cn.edu.cg.domain.CartItem;

@WebServlet("/ChangeQuantityServlet")
public class ChangeQuantityServlet extends HttpServlet {

	private static final long serialVersionUID = 1L;

	protected void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		request.setCharacterEncoding("UTF-8");
		response.setCharacterEncoding("UTF-8");//这一行功能在下一行中已经有了。
		response.setContentType("text/html; charset=UTF-8");
        String id=request.getParameter("id");
        String quantity=request.getParameter("quantity");
        Cart cart=(Cart) request.getSession().getAttribute("cart");
        CartItem item = cart.getMap().get(id);
        item.setQuantity(Double.parseDouble(quantity));//int 转化时不能带小数点
        request.getRequestDispatcher("/listcart.jsp").forward(request, response);
	}

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