Java OOS 简单上传，分片上传（加进度条），（流式）下载文件

1.下载前端调用接口 (流式下载大文件可能比较慢！也可以直接下载URL的方式）

@GetMapping(value = "/downloadFile")     public void downloadFile(@RequestParam String ossPath, HttpServletResponse response) {         BufferedInputStream input;         OutputStream outputStream;         OSS ossClient = OssUtil.getOssBean();         try {             OSSObject ossObject = ossClient.getObject(OssUtil.BUCKET_NAME, ossPath); //            response.reset();             response.setCharacterEncoding("utf-8");             response.setContentType("application/x-msdownload");             response.addHeader("Content-Disposition",                     "attachment;fileName=\""   new String(ossPath.getBytes(StandardCharsets.UTF_8), StandardCharsets.UTF_8) "\""); //                    "attachment;filename=" new String(ossPath.getBytes("gb2312"), "ISO8859-1"));             input = new BufferedInputStream(ossObject.getObjectContent());             byte[] buffBytes = new byte[1024];             outputStream = response.getOutputStream();             int read;             while ((read = input.read(buffBytes)) != -1) {                 outputStream.write(buffBytes, 0, read);             }             outputStream.flush();             // 读取数据后，必须关闭获取的流量，否则会造成连接泄漏，导致要求无连接可用，程序无法正常工作。             ossObject.close();         } catch (OSSException | ClientException | IOException oe) {             oe.printStackTrace();         } finally {             if (ossClient != null) {                 ossClient.shutdown();             }         }     }

2.简单上传接口，官方可以上传进度条api实现，这块不做实现。

@PassToken     @ApiOperation("简单上传")     @PostMapping(value = "/uploadFile")     public RestResult