地址簿

数据库表设计

就是基本增删改查，与前面的类似。

用户下单

用户点餐业务流程：

购物车-订单提交-订单支付-下单成功

展示购物车数据，不需要提交到后端

数据库设计：两个表【订单表orders，订单明细表order_detail】



DTO：

VO：

controller:

@RestController("UserOrderController")//作为Bean名称,避免与admin端名称重复
@RequestMapping("/user/order")
@Api(tags = "B端用户订单接口")
public class OrderController {@Autowiredprivate OrderService orderService;@PostMapping("/submit")@ApiOperation("用户下单")public Result<OrderSubmitVO> submit(@RequestBody OrdersSubmitDTO submitDTO){return Result.success(orderService.submit(submitDTO));//传入DTO返回VO}

service :
@Transactional//设计几多个数据表，需要保证数据一致性，需要事务注解–保证原子性，全成功或全失败

@Transactional//事务注解 -方法执行完提交才插入@Overridepublic OrderSubmitVO submit(OrdersSubmitDTO submitDTO) {//处理各种业务异常检查（地址是否为空，购物车是否为空）AddressBook addressBook = addressBookMapper.getById(submitDTO.getAddressBookId());if (addressBook == null) {throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);}//检查当前用户的购物车是否为空Long userId = BaseContext.getCurrentId();//当前用户IDShoppingCart shoppingCart = new ShoppingCart();shoppingCart.setUserId(userId);List<ShoppingCart> list = shoppingCartMapper.list(shoppingCart);if (list == null || list.size() == 0) {throw new ShoppingCartBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);}//1.增加一条订单信息Orders orders = new Orders();BeanUtils.copyProperties(submitDTO, orders);orders.setOrderTime(LocalDateTime.now());orders.setPayStatus(Orders.UN_PAID);orders.setStatus(Orders.PENDING_PAYMENT);orders.setNumber(String.valueOf(System.currentTimeMillis()));orders.setPhone(addressBook.getPhone());orders.setConsignee(addressBook.getConsignee());//收货人orders.setUserId(userId);//用户IDorderMapper.insert(orders);//2.增加多条订单详情List<OrderDetail> orderDetailList = new ArrayList<>();//整个批量插入for (ShoppingCart cart : list) {//遍历购物车里的数据OrderDetail orderDetail = new OrderDetail();//订单单明细BeanUtils.copyProperties(cart, orderDetail);orderDetail.setOrderId(orders.getId());//设置当前订单明细关联的订单idorderDetailList.add(orderDetail);}orderDetailMapper.insertBatch(orderDetailList);//3.删除用户购物车shoppingCartMapper.deleteByUserId(userId);//4.封装VO对象并返回OrderSubmitVO orderSubmitVO = OrderSubmitVO.builder().id(orders.getId()).orderNumber(orders.getNumber()).orderTime(orders.getOrderTime()).orderAmount(orders.getAmount()).build();return orderSubmitVO;}

增加1订单
mapper:

 void insert(Orders orders);

xml:出入后返回订单主键值

<insert id="insert" parameterType="Orders" useGeneratedKeys="true" keyProperty="id">insert into orders (number, status, user_id, address_book_id, order_time, checkout_time, pay_status, pay_method,amount, remark, phone, address, consignee, estimated_delivery_time, delivery_status,pack_amount, tableware_number, tableware_status)values (#{number}, #{status}, #{userId}, #{addressBookId}, #{orderTime}, #{checkoutTime}, #{payMethod},#{payStatus}, #{amount}, #{remark}, #{phone}, #{address}, #{consignee}, #{estimatedDeliveryTime},#{deliveryStatus}, #{packAmount}, #{tablewareNumber}, #{tablewareStatus})</insert>

批量增加订单详情：

 void insertBatch(List<OrderDetail> orderDetailList);

<insert id="insertBatch">insert into order_detail (name, image, order_id, dish_id, setmeal_id, dish_flavor, number, amount)values<foreach collection="orderDetailList" item="od" separator=",">(#{od.name},#{od.image},#{od.orderId} ,#{od.dishId},#{od.setmealId},#{od.dishFlavor},#{od.number},#{od.amount})</foreach></insert>

订单支付（*流程）

微信支付介绍

JSAPI下单：商户调用该接口在后台生成预支付交易单，返回表示，

微信支付准备工作

两个问题：

1.调用过程如何保证数据安全？

获取微信支付平台整证书、商户私钥文件
从微信商户平台得到两个文件

2.微信后台如何调用到商户系统？

当前商务系统的ip就是本地电脑ip这个局域网的IP，微信后跳调用不到，应该用公网IP。
获取临时域名：
cpolar.exe内网穿透生成一个临时域名。
略。

从用户发起支付订单开始看：

@PutMapping("/payment")@ApiOperation("订单支付")public Result<OrderPaymentVO> payment(@RequestBody OrdersPaymentDTO ordersPaymentDTO) throws Exception {//订单支付OrderPaymentVO orderPaymentVO = orderService.payment(ordersPaymentDTO);//生成预交易订单return Result.success(orderPaymentVO);}

public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {// 当前登录用户idLong userId = BaseContext.getCurrentId();User user = userMapper.getById(userId);//调用微信支付接口，生成预支付交易单JSONObject jsonObject = weChatPayUtil.pay(//***这个微信支付工具类--即调用微信支付接口ordersPaymentDTO.getOrderNumber(), //商户订单号new BigDecimal(0.01), //支付金额，单位 元"苍穹外卖订单", //商品描述user.getOpenid() //微信用户的openid);if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")) {throw new OrderBusinessException("该订单已支付");}OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);vo.setPackageStr(jsonObject.getString("package"));return vo;}