cartaction.java

购物车程序:主要用Struts+Hibernate框架实现

package com.rmeng.shoppingCart.controller;

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

import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.actions.MappingDispatchAction;

import com.rmeng.shoppingCart.biz.SystemBiz;
import com.rmeng.shoppingCart.javabean.entity.Cart;
import com.rmeng.shoppingCart.javabean.entity.Item;
import com.rmeng.shoppingCart.javabean.entity.User;

public class CartAction extends MappingDispatchAction{
			public ActionForward modifyNumber(ActionMapping mapping, ActionForm form, 
			HttpServletRequest request, HttpServletResponse response)throws Exception
					{
						String[] s=request.getParameterValues("product");
						HttpSession session=request.getSession();
						Cart cart=(Cart) session.getAttribute("cart");
						Item item=null;
						for(int i=0;i<s.length;i++)
						{
							item=cart.getItems().get(Integer.parseInt(s[i]));
							Integer pid=item.getProduct().getPid();
							String no=request.getParameter("No"+pid);										
							item.setNumber(Integer.parseInt(no));
							Double cost=item.getCost();
							Double cost1=item.getProduct().getPrice()*Integer.parseInt(no);
							item.setCost(cost1);					
							cart.setCost(cart.getCost()-cost+cost1);
							cart.modifyItemNumber(item);
						}
							session.setAttribute("cart", cart);
							return mapping.findForward("message");
					}
			public ActionForward deleteSelectedItem(ActionMapping mapping, ActionForm form, 
					HttpServletRequest request, HttpServletResponse response)throws Exception
					{
							String[] s= request.getParameterValues("product");
							Item item=null;
							HttpSession session=request.getSession();
							Cart cart=(Cart) session.getAttribute("cart");
							for(int i=0;i<s.length;i++)
							{
							item=cart.getItems().get(Integer.parseInt(s[i]));							
							cart.removeItemByProductId(item.getProduct().getPid());							
							}				
							session.setAttribute("cart",cart);							
							return mapping.findForward("message");
					}
			public ActionForward clearCart(ActionMapping mapping, ActionForm form, 
					HttpServletRequest request, HttpServletResponse response)throws Exception
					{
						HttpSession session=request.getSession();		
						Cart cart=(Cart) session.getAttribute("cart");
						cart.clear();
						session.setAttribute("cart", cart);
						return mapping.findForward("message");
							
					}
			public ActionForward operateOrder(ActionMapping mapping, ActionForm form, 
					HttpServletRequest request, HttpServletResponse response)throws Exception
					{

						HttpSession session=request.getSession();		
						Cart cart=(Cart) session.getAttribute("cart");
						User user=(User) session.getAttribute("user");
						SystemBiz systemBiz=new SystemBiz();
						
						int orderId=systemBiz.generaterOrder(user, cart);
						
						request.setAttribute("orderId", orderId);
						
					
						return mapping.findForward("success");
					
					}
			
}