圖片點擊下載顯示在瀏覽器

public void downLoad(String bucketName, String objectName, HttpServletResponse httpServletResponse) {
        // 創建ObsClient實例
        final ObsClient obsClient = new ObsClient(ak, sk, endPoint);

        ObsObject obsObject = obsClient.getObject(bucketName, objectName);
        try {
            // 讀取對象內容
            System.out.println("Object content:");
            @Cleanup
            InputStream input = obsObject.getObjectContent();
            @Cleanup
            OutputStream outputStream = httpServletResponse.getOutputStream();

            byte[] b = new byte[1024];
            @Cleanup
            ByteArrayOutputStream bos = new ByteArrayOutputStream();
            int len;
            while ((len = input.read(b)) != -1) {
                bos.write(b, 0, len);
            }
            outputStream.write(bos.toByteArray());
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

如果需要下載 設置響應頭

/**
     * 查看圖片 下載
     *
     * @param httpServletResponse
     */
    @RequestMapping("/openImage/{fileid}")
    public void openImage(@PathVariable("fileid") Integer fileid, HttpServletResponse httpServletResponse) {
        OutputStream outputStream = null;
        BlockFile blockFile = blockFileService.getById(fileid);
//        byte[] bytes = blockChainCallService.downLoad("/api/file/download?file_id=76084");
        BlockDownLoadDto blockDownLoadDto = blockChainCallService.downLoad(blockFile.getUrl());
        try {
            outputStream = httpServletResponse.getOutputStream();
            httpServletResponse.setHeader("Content-disposition", "attachment;filename=" + blockDownLoadDto.getPrefix() + "." + blockDownLoadDto.getSuffix());
            httpServletResponse.setHeader("Accpet-Ranges", "bytes");
            httpServletResponse.setHeader("Content-Length", "number");
            httpServletResponse.setContentType("application/octet-stream");
            outputStream.write(blockDownLoadDto.getBytes());
//            outputStream.write(blockFileService.pdfAddWaterMark(blockDownLoadDto.getBytes()));
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                outputStream.flush();
                outputStream.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }