fix oss import bug

pkg/filesystem/driver/oss/handler.go

@@ -172,6 +172,15 @@ func (handler *Driver) List(ctx context.Context, base string, recursive bool) ([
 		if err != nil {
 			continue
 		}
+		if strings.HasSuffix(object.Key, "/") {
+			res = append(res, response.Object{
+				Name:         path.Base(object.Key),
+				RelativePath: filepath.ToSlash(rel),
+				Size:         0,
+				IsDir:        true,
+				LastModify:   time.Now(),
+			})
+		} else {
 			res = append(res, response.Object{
 				Name:         path.Base(object.Key),
 				Source:       object.Key,
@@ -181,6 +190,7 @@ func (handler *Driver) List(ctx context.Context, base string, recursive bool) ([
 				LastModify:   object.LastModified,
 			})
 		}
+	}
 
 	return res, nil
 }