Java tutorial
/******************************************************************************* * Copyright (c) 2014 BitRangers (Team C1). * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors: * BitRangers (Team C1) - initial API and implementation ******************************************************************************/ package com.bitranger.parknshop.buyer.controller; import java.sql.Timestamp; import java.util.List; import javax.servlet.http.HttpServletRequest; import javax.transaction.Transaction; import org.hibernate.FlushMode; import org.omg.CORBA.Current; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import com.bitranger.parknshop.buyer.dao.impl.CartCustomerItemDAO; import com.bitranger.parknshop.buyer.model.CartCustomerItem; import com.bitranger.parknshop.buyer.model.CartCustomerItemId; import com.bitranger.parknshop.buyer.model.PsCustomer; import com.bitranger.parknshop.common.dao.FetchOption; import com.bitranger.parknshop.common.dao.impl.PsItemDAO; import com.bitranger.parknshop.common.model.PsItem; /** * @author Zhang Qinchuan * @author Yu Bowen * */ @Controller public class AddCartController { @Autowired CartCustomerItemDAO psCartCustomerItemDao; @Autowired PsItemDAO psItemDao; @RequestMapping(value = "/addcart") public String addCart(HttpServletRequest req, Integer itemId) { PsItem psItem = psItemDao.findById(itemId); if (psItem == null) return Utility.error("Unexisted item"); PsCustomer currentCustomer = (PsCustomer) req.getSession().getAttribute("currentCustomer"); if (currentCustomer == null) return Utility.error("Not Login"); CartCustomerItem item = psCartCustomerItemDao .findById(new CartCustomerItemId(currentCustomer.getId(), itemId)); if (item != null) { item.setQuantity(item.getQuantity() + 1); psCartCustomerItemDao.update(item); return "redirect:/"; } CartCustomerItem transientItem = new CartCustomerItem(); transientItem.setId(new CartCustomerItemId(currentCustomer.getId(), itemId)); transientItem.setPsCustomer(currentCustomer); transientItem.setPsItem(psItem); transientItem.setQuantity(1); transientItem.setTimeCreated(new Timestamp(System.currentTimeMillis())); psCartCustomerItemDao.save(transientItem); org.springframework.orm.hibernate3.support.OpenSessionInViewFilter ss = new org.springframework.orm.hibernate3.support.OpenSessionInViewFilter(); return "redirect:/"; } }