我的订单点击跳转订单详情页；订单详情页展示订单总金额；立即下单可以选择商品数量

backend/microservice-provider-shop-8003/src/main/java/com/cxyxiaomo/epp/shop/service/OrderService.java

@@ -14,6 +14,7 @@ import org.springframework.transaction.annotation.Transactional;
 import org.springframework.transaction.interceptor.TransactionAspectSupport;
 
 import javax.annotation.Resource;
+import java.math.BigDecimal;
 import java.time.LocalDateTime;
 import java.util.List;
 
@@ -40,13 +41,16 @@ public class OrderService {
         SnowflakeManager snowflakeManager = new SnowflakeManager(1L, 1L);
         long orderId = snowflakeManager.nextValue();
 
+
+        // 订单总金额
+        BigDecimal totalPrice = new BigDecimal(0);
+
         // 创建订单
         Order order = new Order();
         order.setId(orderId);
         order.setUserId(userId);
         order.setOrderDate(LocalDateTime.now());
         order.setOrderStatus(OrderStatus.PENDING.getValue());
-        orderDao.insertOrder(order);
 
         // 创建订单详情
         for (OrderDetail orderItem : orderItemList) {
@@ -66,7 +70,16 @@ public class OrderService {
             orderItem.setId(null);
             orderItem.setOrderId(orderId);
             orderItem.setUnitPrice(retailPrice);
+
+            // 计入订单总价
+            BigDecimal goodPrice = BigDecimal.valueOf(retailPrice * orderItem.getGoodCount());
+            totalPrice = totalPrice.add(goodPrice);
         }
+
+        // 订单总价
+        order.setOrderPrice(totalPrice);
+
+        orderDao.insertOrder(order);
         orderDao.batchInsertOrderDetail(orderItemList);
         return orderId;
     }

backend/microservice-provider-shop-8003/src/main/resources/mybatis/mapper/OrderMapper.xml

@@ -46,8 +46,8 @@
     <!-- 创建订单 -->
     <insert id="insertOrder" parameterType="com.cxyxiaomo.epp.common.pojo.Order" useGeneratedKeys="true"
             keyProperty="orderId">
-        INSERT INTO `order` (id, user_id, order_date, order_status)
-        VALUES (#{id}, #{userId}, #{orderDate,javaType=java.time.LocalDateTime,jdbcType=TIMESTAMP}, #{orderStatus})
+        INSERT INTO `order` (id, user_id, order_date, order_status, order_price)
+        VALUES (#{id}, #{userId}, #{orderDate,javaType=java.time.LocalDateTime,jdbcType=TIMESTAMP}, #{orderStatus}, #{orderPrice})
     </insert>
 
     <!-- 批量插入订单详情 -->