java通过minio下载pdf附件

java通过minio下载pdf附件

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文章目录

• java通过minio下载pdf附件
• 一、java通过minio下载pdf附件getObject方法

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一、java通过minio下载pdf附件getObject方法

 @Resource
    private MinioClient minioClient;

    /**
     * 通过minio下载pdf附件
     * @param fileName:"sdgregrtgfr.pdf"   为存储在minio中的重命名文件名
     * @param originalName:"Java学习文档.pdf"   为实际文件名
     * @param response
     * @throws IOException
     */
    public void getObject(String fileName,String originalName, HttpServletResponse response) throws IOException {
        InputStream inputStream = null;
        OutputStream outputStream = null;

        try {
            String filePath = "/";//在minio中存储的路径
            GetObjectArgs build = GetObjectArgs.builder().bucket("桶名").object(filePath + fileName).build();
            inputStream = minioClient.getObject(build);

            response.setContentType("application/pdf;charset=utf-8");
            response.setCharacterEncoding("utf-8");
            String encodedFileName = URLEncoder.encode(originalName, "UTF-8").replace("+", "%20");
            response.setHeader("Content-disposition", "attachment;filename=\"" + encodedFileName + "\"");
            outputStream = response.getOutputStream();
            byte[] buffer = new byte[4096];
            int bytesRead;
            while ((bytesRead = inputStream.read(buffer)) != -1) {
                outputStream.write(buffer, 0, bytesRead);
            }

        } catch (Exception e) {
            // 处理异常
            e.printStackTrace();
            throw new BizException("附件下载失败，请重试");

        } finally {
            inputStream.close();
            outputStream.close();
        }
    }