golang get dir info
func TestRandomFile(tt *testing.T) {
dirname := "D:\\SynologyDrive\\SynologyDrive\\Pictures\\照片\\gg\\2022"
fileList, err := os.ReadDir(dirname)
if err != nil {
log.Println(err)
}
for index, file := range fileList {
log.Println(index, file.Name())
}
}