java网上图书商城 java网上图书商城（7）订单模块2

<div class="divMain">
 <div class="divTitle">
 <span style="margin-left: 150px;margin-right: 280px;">商品信息</span>
 <span style="margin-left: 40px;margin-right: 38px;">金额</span>
 <span style="margin-left: 50px;margin-right: 40px;">订单状态</span>
 <span style="margin-left: 50px;margin-right: 50px;">操作</span>
 </div>
 <table align="center" border="0" width="100%" cellpadding="0" cellspacing="0">
 <c:forEach items="${pb.beanList }" var="order">
 <tr class="tt">
  <td width="320px">订单号：<a href="<c:url value='/OrderServlet?method=load&oid=${order.oid }'/>">${order.oid }</a></td>
  <td width="200px">下单时间：${order.ordertime }</td>
  <td> </td>
  <td> </td>
  <td> </td>
  <td> </td>
 </tr>
 <tr style="padding-top: 10px; padding-bottom: 10px;">
  <td colspan="2">
  <c:forEach items="${order.orderItemList }" var="orderItem">
   <a class="link2" href="<c:url value='/BookServlet?method=load&bid=${orderItem.book.bid }'/>">
   <img border="0" width="70" src="<c:url value='/${orderItem.book.image_b }'/>"/>
   </a>
  </c:forEach>
  </td>
  <td width="115px">
  <span class="price_t">¥${order.total }</span>
  </td>
  <td width="142px">
  <c:choose>
   <c:when test="${order.status eq 1 }">(等待付款)</c:when>
   <c:when test="${order.status eq 2 }">(准备发货)</c:when>
   <c:when test="${order.status eq 3 }">(等待确认)</c:when>
   <c:when test="${order.status eq 4 }">(交易成功)</c:when>
   <c:when test="${order.status eq 5 }">(已取消)</c:when>
  </c:choose>  
  </td>
  <td>
  <a href="<c:url value='/OrderServlet?method=load&oid=${order.oid }'/>">查看</a><br/>
  <c:if test="${order.status eq 1 }">
   <a href="<c:url value='/OrderServlet?method=paymentPre&oid=${order.oid }'/>">支付</a><br/>
   <a href="<c:url value='/OrderServlet?method=load&oid=${order.oid }&btn=cancel'/>">取消</a><br/>   
  </c:if>
  <c:if test="${order.status eq 3 }">
   <a href="<c:url value='/OrderServlet?method=load&oid=${order.oid }&btn=confirm'/>">确认收货</a><br/>
  </c:if>
  </td>
 </tr>
 </c:forEach>
 </table>
</div>

public String createOrder(HttpServletRequest req, HttpServletResponse resp)
 throws ServletException, IOException {
 /*
 * 1. 获取所有购物车条目的id，查询之
 */
 String cartItemIds = req.getParameter("cartItemIds");
 List<CartItem> cartItemList = cartItemService.loadCartItems(cartItemIds);
 if(cartItemList.size() == 0) {
 req.setAttribute("code", "error");
 req.setAttribute("msg", "您没有选择要购买的图书，不能下单！");
 return "f:/jsps/msg.jsp";
 }
 /*
 * 2. 创建Order
 */
 Order order = new Order();
 order.setOid(CommonUtils.uuid());//设置主键
 order.setOrdertime(String.format("%tF %<tT", new Date()));//下单时间
 order.setStatus(1);//设置状态，1表示未付款
 order.setAddress(req.getParameter("address"));//设置收货地址
 User owner = (User)req.getSession().getAttribute("sessionUser");
 order.setOwner(owner);//设置订单所有者
 
 BigDecimal total = new BigDecimal("0");
 for(CartItem cartItem : cartItemList) {
 total = total.add(new BigDecimal(cartItem.getSubtotal() + ""));
 }
 order.setTotal(total.doubleValue());//设置总计
 
 /*
 * 3. 创建List<OrderItem>
 * 一个CartItem对应一个OrderItem
 */
 List<OrderItem> orderItemList = new ArrayList<OrderItem>();
 for(CartItem cartItem : cartItemList) {
 OrderItem orderItem = new OrderItem();
 orderItem.setOrderItemId(CommonUtils.uuid());//设置主键
 orderItem.setQuantity(cartItem.getQuantity());
 orderItem.setSubtotal(cartItem.getSubtotal());
 orderItem.setBook(cartItem.getBook());
 orderItem.setOrder(order);
 orderItemList.add(orderItem);
 }
 order.setOrderItemList(orderItemList);
 
 /*
 * 4. 调用service完成添加
 */
 orderService.createOrder(order);
 
 // 删除购物车条目
 cartItemService.batchDelete(cartItemIds);
 /*
 * 5. 保存订单，转发到ordersucc.jsp
 */
 req.setAttribute("order", order);
 return "f:/jsps/order/ordersucc.jsp";
}

public void add(Order order) throws SQLException {
 /*
 * 1. 插入订单
 */
 String sql = "insert into t_order values(?,?,?,?,?,?)";
 Object[] params = {order.getOid(), order.getOrdertime(),
  order.getTotal(),order.getStatus(),order.getAddress(),
  order.getOwner().getUid()};
 qr.update(sql, params);
 
 /*
 * 2. 循环遍历订单的所有条目,让每个条目生成一个Object[]
 * 多个条目就对应Object[][]
 * 执行批处理，完成插入订单条目
 */
 sql = "insert into t_orderitem values(?,?,?,?,?,?,?,?)";
 int len = order.getOrderItemList().size();
 Object[][] objs = new Object[len][];
 for(int i = 0; i < len; i++){
 OrderItem item = order.getOrderItemList().get(i);
 objs[i] = new Object[]{item.getOrderItemId(),item.getQuantity(),
  item.getSubtotal(),item.getBook().getBid(),
  item.getBook().getBname(),item.getBook().getCurrPrice(),
  item.getBook().getImage_b(),order.getOid()};
 }
 qr.batch(sql, objs);
}