//获取源文件流
        InputStream fileInputStream = ofsManager.getFile(downloadStoredPath);
        OutputStream outputStream = response.getOutputStream();
        //设置Http响应头告诉浏览器下载这个附件,下载的文件名也是在这里设置的
        //判断浏览器代理并分别设置响应给浏览器的编码格式
        String finalFileName = downloadStoredPath.substring(downloadStoredPath.lastIndexOf("/") + 1);
        finalFileName = URLEncoder.encode(finalFileName, "UTF8");
        //设置HTTP响应头
        response.reset();//重置 响应头
        response.setContentType("application/x-download");//告知浏览器下载文件，而不是直接打开，浏览器默认为打开
        response.addHeader("Content-Disposition", "attachment;filename=" + finalFileName + "");//下载文件的名称
        byte[] bytes = new byte[2048];
        int len = 0;
        while ((len = fileInputStream.read(bytes)) > 0) {
            outputStream.write(bytes, 0, len);
        }
        fileInputStream.close();
        outputStream.close();