Java课程设计——购物车

package com.leonard.actions; import java.util.*; import java.util.Map.Entry; import javax.servlet.http.*; import org.apache.struts.action.*; import org.apache.struts.actions.MappingDispatchAction; import com.leonard.actionforms.*; import com.leonard.entity.*; import com.leonard.service.CartService; public class CartAction extends MappingDispatchAction { public ActionForward input(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception { CartService cs = new CartService(); List<Product> productList = cs.getProducts(); if(productList==null) { ActionErrors errors = new ActionErrors(); ActionMessage msg = new ActionMessage("cart.non"); errors.add("loginerror", msg); saveErrors(request, errors); } else { request.getSession().setAttribute("productList", productList); } return mapping.findForward("to"); } public ActionForward addProduct(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception { ItemForm itf = (ItemForm)form; Cart cart = (Cart)request.getSession().getAttribute("cart"); if(cart==null) { cart = new Cart(); } List<Product> productList = (List)request.getSession().getAttribute("productList"); if(productList!=null) { Iterator<Product> pl = productList.iterator(); while(pl.hasNext()) { Product pr = pl.next(); if(pr.getId()==Integer.parseInt(itf.getPid())) { cart.addItem(pr, 1); break; } } } request.getSession().setAttribute("cart", cart); return mapping.findForward("goback"); } public ActionForward clearCart(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception { request.getSession().removeAttribute("cart"); return mapping.findForward("next"); } public ActionForward affordCart(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception { LoginForm lf = (LoginForm)form; Cart cart = (Cart)request.getSession().getAttribute("cart"); User user = (User)request.getSession().getAttribute("user"); Order order = new Order(); HashMap<Integer,Item> map = cart.getItems(); Set<Entry<Integer, Item>> set = map.entrySet(); Iterator it = set.iterator(); order.setStatus(new Integer(1).shortValue()); //产生新USER 用来保存USER User newUser = new User(); newUser.setId(user.getId()); newUser.setPassword(user.getPassword()); newUser.setName(user.getName()); newUser.setOrders(user.getOrders()); newUser.setPostcode(user.getPostcode()); newUser.setOffice_phone(user.getOffice_phone()); newUser.setHome_phone(user.getHome_phone()); newUser.setEmail(user.getEmail()); newUser.setCell_phone(user.getCell_phone()); newUser.setAddress(user.getAddress()); user.setPostcode(lf.getPostcode()); user.setOffice_phone(lf.getOffice_phone()); user.setHome_phone(lf.getHome_phone()); user.setEmail(lf.getEmail()); user.setCell_phone(lf.getCell_phone()); user.setAddress(lf.getAddress()); //用户和订单的双向关系 user.getOrders().add(order); order.setUser(user); double total = 0; while(it.hasNext()) { Entry<Integer,Item> en = (Entry<Integer, Item>) it.next(); Item item = en.getValue(); //订单和产品条目的双向关系 order.getItems().add(item); item.setOrder(order); total+=item.getCost(); } order.setCost(total); CartService cs = new CartService(); int i = cs.saveOrder(order,user); if(i>0) { request.setAttribute("orderid", i); request.getSession().setAttribute("user", user); request.getSession().removeAttribute("cart"); } else { request.getSession().setAttribute("user", newUser); } return mapping.findForward("next"); } public ActionForward gotobuy(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception { User user = (User)request.getSession().getAttribute("user"); if(user==null) { request.getSession().setAttribute("buy", "buy"); return mapping.findForward("tologin"); } return mapping.findForward("tobuy"); } }