:toda:

utils/rand.go

@@ -0,0 +1,26 @@
+package utils
+
+import (
+	"bytes"
+	"crypto/rand"
+	"math/big"
+)
+
+type random struct{}
+
+func Random() random {
+	return random{}
+}
+
+func (random) RandStr(len int) string {
+	var container string
+	var str = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890"
+	b := bytes.NewBufferString(str)
+	length := b.Len()
+	bigInt := big.NewInt(int64(length))
+	for i := 0; i < len; i++ {
+		randomInt, _ := rand.Int(rand.Reader, bigInt)
+		container += string(str[randomInt.Int64()])
+	}
+	return container
+}