initial crm server

server/common/rand.go

@@ -0,0 +1,14 @@
+package common
+
+import (
+	"math/rand"
+	"time"
+)
+
+func RandInt(min, max int) int {
+	rand.Seed(time.Now().UnixNano())
+	if min >= max || min == 0 || max == 0 {
+		return max
+	}
+	return rand.Intn(max-min+1) + min
+}