完善了小程序端用户创建订单接口

src/main/java/com/cultural/heritage/service/order/impl/OrderServiceImpl.java

@@ -1,6 +1,7 @@
 package com.cultural.heritage.service.order.impl;
 
 import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
 import com.cultural.heritage.common.ErrorCode;
 import com.cultural.heritage.constant.CommonConstant;
@@ -48,6 +49,7 @@ public class OrderServiceImpl extends ServiceImpl<OrderMapper, Order> implements
     private GoodMapper goodMapper;
 
 
+
     /**
      * 获取查询条件
      */
@@ -80,6 +82,9 @@ public class OrderServiceImpl extends ServiceImpl<OrderMapper, Order> implements
     }
 
 
+    /**
+     * 封装订单详细信息请求体
+     */
     @Override
     public OrderAddRequest initOrderMainInfo(OrderMainInfoAddRequest orderMainInfoAddRequest) {
         Long userId = orderMainInfoAddRequest.getUserId();
@@ -90,67 +95,74 @@ public class OrderServiceImpl extends ServiceImpl<OrderMapper, Order> implements
         String orderNumber = orderMainInfoAddRequest.getOrderNumber();
         String orderStatus = orderMainInfoAddRequest.getOrderStatus();
         Double totalAmount = orderMainInfoAddRequest.getTotalAmount();
-
         List<OrderItemMainInfoAddRequest> orderItemMainInfoAddRequestList = orderMainInfoAddRequest.getOrderItemMainInfoAddRequestList();
 
-        OrderAddRequest orderAddRequest = new OrderAddRequest();
+        // 获取订单地址信息
+        AddressSnapshot addressSnapshot = getSnapshot(addressId, addressMapper, AddressSnapshot.class);
 
+        // 获取订单联系人信息
+        ContactsSnapshot contactsSnapshot = getSnapshot(contactsId, contactsMapper, ContactsSnapshot.class);
+
+        // 获取订单优惠券信息
+        CouponSnapshot couponSnapshot = getSnapshot(couponId, couponMapper, CouponSnapshot.class);
+
+        // 封装订单明细信息
+        List<OrderItemAddRequest> orderItemAddRequestList = orderItemMainInfoAddRequestList.stream().map(orderItemMainInfoAddRequest -> {
+            Long goodId = orderItemMainInfoAddRequest.getGoodId();
+            Integer quantity = orderItemMainInfoAddRequest.getQuantity();
+            OrderItemAddRequest orderItemAddRequest = new OrderItemAddRequest();
+            // 获取订单商品信息
+            GoodSnapshot goodSnapshot = getSnapshot(goodId, goodMapper, GoodSnapshot.class);
+
+            orderItemAddRequest.setGoodSnapshot(goodSnapshot);
+            orderItemAddRequest.setPriceSnapshot(goodSnapshot.getPrice());
+            orderItemAddRequest.setQuantity(quantity);
+            orderItemAddRequest.setItemTotalAmount(goodSnapshot.getPrice() * quantity);
+            return orderItemAddRequest;
+        }).toList();
+
+        // 创建订单详细信息请求体
+        OrderAddRequest orderAddRequest = new OrderAddRequest();
         orderAddRequest.setUserId(userId);
         orderAddRequest.setUserName(userName);
         orderAddRequest.setOrderNumber(orderNumber);
         orderAddRequest.setOrderStatus(orderStatus);
         orderAddRequest.setTotalAmount(totalAmount);
-
-        // 获取订单地址信息
-        QueryWrapper<Address> addressQueryWrapper = new QueryWrapper<>();
-        addressQueryWrapper.eq("id", addressId);
-        Address address = addressMapper.selectOne(addressQueryWrapper);
-        ThrowUtils.throwIf(address == null, ErrorCode.NOT_FOUND_ERROR);
-        AddressSnapshot addressSnapshot = new AddressSnapshot();
-        BeanUtils.copyProperties(address, addressSnapshot);
-        // 获取订单联系人信息
-        QueryWrapper<Contacts> contactsQueryWrapper = new QueryWrapper<>();
-        contactsQueryWrapper.eq("id", contactsId);
-        Contacts contacts = contactsMapper.selectOne(contactsQueryWrapper);
-        ThrowUtils.throwIf(contacts == null, ErrorCode.NOT_FOUND_ERROR);
-        ContactsSnapshot contactsSnapshot = new ContactsSnapshot();
-        BeanUtils.copyProperties(contacts, contactsSnapshot);
-        // 获取订单优惠券信息
-        QueryWrapper<Coupon> couponQueryWrapper = new QueryWrapper<>();
-        couponQueryWrapper.eq("id", couponId);
-        Coupon coupon = couponMapper.selectOne(couponQueryWrapper);
-        ThrowUtils.throwIf(coupon == null, ErrorCode.NOT_FOUND_ERROR);
-        CouponSnapshot couponSnapshot = new CouponSnapshot();
-        BeanUtils.copyProperties(coupon, couponSnapshot);
-
         orderAddRequest.setAddressSnapshot(addressSnapshot);
         orderAddRequest.setContactsSnapshot(contactsSnapshot);
         orderAddRequest.setCouponSnapshot(couponSnapshot);
-
-
-        List<OrderItemAddRequest> orderItemAddRequestList = orderItemMainInfoAddRequestList.stream().map(orderItemMainInfoAddRequest -> {
-            Long goodId = orderItemMainInfoAddRequest.getGoodId();
-            Integer quantity = orderItemMainInfoAddRequest.getQuantity();
-            OrderItemAddRequest orderItemAddRequest = new OrderItemAddRequest();
-            QueryWrapper<Good> goodQueryWrapper = new QueryWrapper<>();
-            goodQueryWrapper.eq("id", goodId);
-            Good good = goodMapper.selectOne(goodQueryWrapper);
-            ThrowUtils.throwIf(good == null, ErrorCode.NOT_FOUND_ERROR);
-            GoodSnapshot goodSnapshot = new GoodSnapshot();
-            BeanUtils.copyProperties(good, goodSnapshot);
-            orderItemAddRequest.setGoodSnapshot(goodSnapshot);
-            orderItemAddRequest.setPriceSnapshot(good.getPrice());
-            orderItemAddRequest.setQuantity(quantity);
-            orderItemAddRequest.setItemTotalAmount(good.getPrice() * quantity);
-            return orderItemAddRequest;
-        }).toList();
-
         orderAddRequest.setOrderItemList(orderItemAddRequestList);
-
         return orderAddRequest;
     }
 
 
+    /**
+     * 根据id获取订单(地址，联系人，优惠券，商品)信息
+     */
+    private static <T, S> S getSnapshot(Long id, BaseMapper<T> mapper, Class<S> snapshotClass) {
+        // 创建查询条件
+        QueryWrapper<T> queryWrapper = new QueryWrapper<>();
+        queryWrapper.eq("id", id);
+
+        // 查询实体对象
+        T entity = mapper.selectOne(queryWrapper);
+
+        // 判断实体对象是否存在，不存在则抛出异常
+        ThrowUtils.throwIf(entity == null, ErrorCode.NOT_FOUND_ERROR);
+
+        try {
+            // 创建快照对象实例
+            S snapshot = snapshotClass.getDeclaredConstructor().newInstance();
+
+            // 复制属性到快照对象
+            BeanUtils.copyProperties(entity, snapshot);
+
+            return snapshot;
+        } catch (Exception e) {
+            throw new BusinessException(ErrorCode.SYSTEM_ERROR);
+        }
+    }
+
 
 
 }