后端：商品确认下单的信息 api 接口，后续需要结合促销，完善这个接口。

promotion/promotion-service-api/src/main/java/cn/iocoder/mall/promotion/api/constant/PromotionActivityTypeEnum.java

@@ -0,0 +1,34 @@
+package cn.iocoder.mall.promotion.api.constant;
+
+/**
+ * 推广活动类型枚举
+ */
+public enum PromotionActivityTypeEnum {
+
+    LIMIT_DISCOUNT(1, "限时折扣"),
+    MEET_REDUCE(2, "满减送"),
+    ;
+
+    /**
+     * 类型值
+     */
+    private final Integer value;
+    /**
+     * 类型名
+     */
+    private final String name;
+
+    PromotionActivityTypeEnum(Integer value, String name) {
+        this.value = value;
+        this.name = name;
+    }
+
+    public Integer getValue() {
+        return value;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+}