diff --git a/platformapi/mtwmapi/act.go b/platformapi/mtwmapi/act.go
index 885059dd..17ce0d90 100644
--- a/platformapi/mtwmapi/act.go
+++ b/platformapi/mtwmapi/act.go
@@ -131,6 +131,7 @@ type RetailDiscountActData struct {
 	Stock         int     `json:"stock,omitempty"`        // 当日剩余活动商品数量。只有当发起查询时间处于活动生效时段内时(start_time、end_time、period、weeks_time均需满足)，该字段才代表实际剩余活动商品数量，否则显示的是创建活动时规定的当日活动库存
 	Status        int     `json:"status,omitempty"`       // 活动状态，0:已过期，1:已生效，2:待生效。
 	Name          string  `json:"name,omitempty"`
+	SkuId         string  `json:"sku_id"` // 京西商品id
 }
 
 type RetailDiscountActResult struct {
@@ -397,6 +398,7 @@ func (a *API) RetailDiscountList(poiCode string, actType int) (actList []*Retail
 		actType = RetailActTypeDirectDown
 	}
 	for {
+
 		result, err := a.AccessAPI("act/retail/discount/list", true, map[string]interface{}{
 			KeyAppPoiCode: poiCode,
 			"act_type":    actType,
diff --git a/utils/utils_type.go b/utils/utils_type.go
index 73408b99..d63bf54f 100644
--- a/utils/utils_type.go
+++ b/utils/utils_type.go
@@ -81,5 +81,19 @@ func IsNil(i interface{}) bool {
 		recover()
 	}()
 	vi := reflect.ValueOf(i)
+	switch vi.Kind() {
+	case reflect.String:
+		return len(i.(string)) == 0
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
+		return i.(int) == 0
+	case reflect.Float32, reflect.Float64:
+		return i.(float64) == 0.0
+	case reflect.Bool:
+		return i.(bool)
+	case reflect.Map:
+		return len(i.(map[interface{}]interface{})) == 0
+	case reflect.Slice:
+		return len(i.([]interface{})) == 0
+	}
 	return vi.IsNil()
 }