processcheckoutaction.java

网上商店 新增功能： 1

package netstore.order;

import java.util.Map;
import java.util.HashMap;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.*;
import org.apache.struts.action.*;
import netstore.framework.exceptions.*;
import netstore.framework.SessionContainer;
import netstore.framework.ShoppingCartItem;
import netstore.framework.ShoppingCart;
import netstore.framework.NetstoreBaseAction;
import netstore.service.*;
import netstore.framework.NetstoreLookupDispatchAction;
import netstore.businessobjects.*;
import java.util.List;
import java.util.Iterator;
import org.apache.struts.util.MessageResources;
import netstore.framework.util.IConstants;

public class ProcessCheckoutAction extends NetstoreLookupDispatchAction {

    //根据key值，决定调用函数
    protected Map getKeyMethodMap() {
        Map map = new HashMap();
        map.put("button.checkout", "checkout");
        map.put("button.saveorder", "saveorder");
        return map;
    }

    public ActionForward saveorder(ActionMapping mapping, ActionForm form,
            HttpServletRequest request, HttpServletResponse response)
            throws IOException, ServletException {
        //do save order
        saveOrder(request);

        return mapping.findForward(IConstants.SUCCESS_KEY);
    }

    public ActionForward checkout(ActionMapping mapping, ActionForm form,
            HttpServletRequest request, HttpServletResponse response)
            throws IOException, ServletException {

        //do check out
        saveOrder(request);

        return mapping.findForward(IConstants.SUCCESS_KEY);
    }

    public void saveOrder(HttpServletRequest request) throws IOException,
            ServletException {
        try {

            //save order
            OrderServiceImpl serviceImpl = getOrderService();
            SessionContainer sessionContainer = getSessionContainer(request);
            ShoppingCart cart = sessionContainer.getCart();
            Customer customer = sessionContainer.getCustomer();

            Order order = new Order();
            order.setCustomer(customer);
            //随机生成一个订单编号
            order.setOrderNumber(new Double(Math.random()
                    * System.currentTimeMillis()).toString().substring(3, 8));

            List items = cart.getItems();
            Iterator it = items.iterator();
            while (it.hasNext()) {
                ShoppingCartItem cartItem = (ShoppingCartItem) it.next();

                //数量，单价，订单，产品
                LineItem lineItem = new LineItem(cartItem.getQuantity(),
                        cartItem.getBasePrice().doubleValue(), order, cartItem
                                .getItem());
                order.getLineItems().add(lineItem);
            }
            //这样就能保存订单了
            serviceImpl.saveOrder(order);
            sessionContainer.setCurrentOrderNumber(order.getOrderNumber());

        } catch (DatastoreException ex) {
            throw new ServletException(ex);
        }
    }
}