minio文件流下载问题记录

1.数据流生成文件

BufferedOutputStream fos2 = null;
BufferedInputStream bis = null;
try {
    bis = new BufferedInputStream(new FileInputStream("F:/user/测试.docx"));
    fos2 = new BufferedOutputStream(new FileOutputStream("F:/user/测试2.docx"));
    byte[] buf = new byte[1024];
    byte[] buf2 = new byte[1024];
    int len;
    while (true) {
        if (!((len = bis.read(buf2, 0, buf2.length)) > 0)) break;
        fos2.write(buf2, 0, len);
    }
    fos2.flush();
    fos2.close();
    bis.close();
} catch (FileNotFoundException e) {
    e.printStackTrace();
}catch (IOException e) {
    e.printStackTrace();
}

2.minio文件流下载

 OutputStream outputStream = null;
        InputStream inputStream = null;
        try {
            inputStream = minioUtils.getObject(GetObjectArgs.builder()
.bucket("bucketName").object("filePath").build())
//            response.setContentType("multipart/form-data");
            response.setContentType("application/octet-stream;charset=utf8");
            response.setHeader("Content-Disposition", "attachment;fileName=" + URLEncoder.encode("测试.doc", "UTF-8"));
            outputStream = response.getOutputStream();
            byte[] buf = new byte[1024];
            int len;
            while ((len= inputStream.read(buf, 0, buf.length)) > 0) {
                outputStream.write(buf, 0, len);
            }
            outputStream.flush();
            outputStream.close();
            inputStream.close();
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (inputStream != null) {
                try {
                    inputStream.close();
                } catch (Exception e2) {
                    log.info("关闭输入流时出现错误", e2);
                }
            }
            if (outputStream != null) {
                try {
                    outputStream.close();
                } catch (Exception e2) {
                    log.info("关闭输入流时出现错误", e2);
                }
            }
        }

3.数据流式下载，ContentType设置在流处理前，否则设置失效。