fit: min_val, max_val参数可选

app/cmd/dtgateway/desc/dtgateway/dtgateway.api

@@ -35,8 +35,8 @@ type (
         Aggregator string `form:"aggregator"`   //聚合方式 min,max,avg，sum，realtime, new
         STime string `form:"stime"`
         ETime string `form:"etime"`
-        MaxVal float64 `form:"max_val"`
-        MinVal float64 `form:"min_val"`
+        MaxVal float64 `form:"max_val,optional"`
+        MinVal float64 `form:"min_val,optional"`
     }
 
     ItemHistoryDataByTimeReq {

app/cmd/dtgateway/internal/types/types.go

@@ -46,8 +46,8 @@ type ItemHistoryDataListReq struct {
 	Aggregator string  `form:"aggregator"` //聚合方式 min,max,avg，sum，realtime, new
 	STime      string  `form:"stime"`
 	ETime      string  `form:"etime"`
-	MaxVal     float64 `form:"max_val"`
-	MinVal     float64 `form:"min_val"`
+	MaxVal     float64 `form:"max_val,optional"`
+	MinVal     float64 `form:"min_val,optional"`
 }
 
 type ItemHistoryDataByTimeReq struct {