docs: public static void transferFile(File src, File dest) throws Exception {
  
          // 删除文件
          // LOGGER.info("start to remove download file: " + ""
          // + dest.getAbsolutePath());
          if (dest.exists()) {
              dest.delete();
          }
  
          // 转移临时下载文件至下载文件夹
          FileUtils.copyFile(src, dest);
      }