chore: 并入 iotlcm-app 历史到 app/（原提交 f40bda9）

app/server/internal/model/mybytes.go

@@ -0,0 +1,52 @@
+package model
+
+import (
+	"encoding/base64"
+	"encoding/json"
+	"errors"
+)
+
+type MyBytes []byte
+
+func (b MyBytes) MarshalJSON() ([]byte, error) {
+	base64Str := base64.StdEncoding.EncodeToString(b)
+	return json.Marshal(base64Str)
+}
+
+func (b *MyBytes) UnmarshalValue(data interface{}) error {
+	str, ok := data.(string)
+	if !ok {
+		return errors.New("data is not a string")
+	}
+	bytes, err := base64.StdEncoding.DecodeString(str)
+	if err != nil {
+		return err
+	}
+	*b = bytes
+	return nil
+}
+
+func (b *MyBytes) UnmarshalJSON(data []byte) error {
+	var s string
+	if err := json.Unmarshal(data, &s); err != nil {
+		return err
+	}
+	return (*b).UnmarshalString(s)
+}
+
+func (b *MyBytes) UnmarshalString(s string) error {
+	bytes, err := base64.StdEncoding.DecodeString(s)
+	if err != nil {
+		return err
+	}
+	*b = bytes
+	return nil
+}
+
+func (b *MyBytes) String() string {
+	return base64.StdEncoding.EncodeToString(*b)
+}
+
+func (b *MyBytes) Bytes() []byte {
+	return *b
+}