fix

utils/id_generator/pickup_track_num.go

@@ -0,0 +1,13 @@
+package id_generator
+
+import (
+	"fmt"
+	"math/rand"
+	"strings"
+	"time"
+)
+
+func GenPickUpTrackNum() string {
+	a := fmt.Sprintf("%s%.8d", time.Now().Format("20060102150405.000"), rand.Intn(1000000))
+	return strings.ReplaceAll(a, ".", "")
+}