依据视频地址重新转文件上传到服务器获取新的地址

做数据迁移将其他部门的视频地址转化到自己服务器下，生成自己的地址

	private void modifyPath(List<M> records) {
		List<M> updateRecords = new ArrayList<>();
		try {
			for (M pics : records) {
				M m = new M();
				m.setId(pics.getId());
				boolean flag = updateVideoField(pics.getVideos(), m::setVideos);
				if (flag) {
					updateRecords.add(mProductPics);
				}
			}
			if (!updateRecords.isEmpty()) {
				batchUpdate(updateRecords);
			}
		} catch (Exception e) {
			log.error("异常{}", e);
		}
	}
	private boolean updateVideoField(String videoUrl, Consumer<String> setter) {
		try {
			if (StringUtils.isNotBlank(videoUrl) && videoUrl.startsWith("https://static")) {
				String uploadUrl = uploadVideoFromUrl(videoUrl);
				setter.accept(uploadUrl);
				return true;
			}
		} catch (Exception e) {
			log.error("异常{}", e);
		}
		return false;
	}

	/**
	 * 视频地址转File
	 */
	public String uploadVideoFromUrl(String videoUrl) {
		File tempFile = null;
		try {
			InputStream videoStream = getVideoStream(videoUrl);
			if (videoStream == null) {
				throw new KyException("视频不存在");
			}
			String fileName = videoUrl.substring(videoUrl.lastIndexOf("/") + 1);
			String suffix = fileName.substring(fileName.lastIndexOf(".") + 1);

			tempFile = File.createTempFile(fileName.replace("." + suffix, ""), "." + suffix);

			try (FileOutputStream fos = new FileOutputStream(tempFile)) {
				byte[] buffer = new byte[1024];
				int bytesRead;
				while ((bytesRead = videoStream.read(buffer)) != -1) {
					fos.write(buffer, 0, bytesRead);
				}
			}
			if (!tempFile.exists()) {
				throw new IOException("临时文件未创建: " + tempFile.getAbsolutePath());
			}
			return upload(tempFile);
		} catch (Exception e) {
			log.error("视频上传异常!", e);
			throw new KyException("视频上传失败: " + e.getMessage());
		} finally {
			if (tempFile != null && tempFile.exists()) {
				tempFile.delete();
			}
		}
	}

	private InputStream getVideoStream(String videoUrl) throws IOException {
		URL url = new URL(videoUrl);
		HttpURLConnection connection = (HttpURLConnection) url.openConnection();
		connection.setRequestMethod("GET");
		connection.connect();
		if (connection.getResponseCode() != HttpURLConnection.HTTP_OK) {
			throw new IOException("视频不可访问，HTTP 响应码: " + connection.getResponseCode());
		}
		return connection.getInputStream();
	}
	
	//文件上传方法
	private String upload(File uploadFile) {
		try {
			return fileService.upload(uploadFile);
		} finally {
			uploadFile.delete();
		}
	}