主要代码

String filePath="templates/test.xls"
ClassPathResource classPathResource = new ClassPathResource(filePath);
InputStream inputStream = classPathResource.getInputStream();

目录

主要目录存放再这

代码案例

public void downloadTemplate( HttpServletResponse response) {
        String path = "templates/test.xls";
        if (path == null) {
            throw new UserException("下载模板失败，模板未找到！");
        }

        String path="templates/线下成绩批量导入模板.xls";
        //资源路径
        Resource resource = new ClassPathResource(path);




        try (InputStream inputStream = resource.getInputStream()) {
            long contentLength = resource.contentLength();
            response.reset();
            response.setCharacterEncoding("UTF-8");
            response.addHeader("Content-Disposition", "attachment;filename*=utf-8''" + URLEncoder.encode(name, "UTF-8"));
            response.addHeader("Content-Length", "" + contentLength);
            response.setContentType("application/octet-stream");
            //写入输出流
            InputStream fis = new BufferedInputStream(inputStream);
            OutputStream outputStream = new BufferedOutputStream(response.getOutputStream());
            byte[] buffer = new byte[32 * 1024];
            int count = 0;
            while ((count = fis.read(buffer)) > 0) {
                outputStream.write(buffer, 0, count);
            }
            fis.close();
            outputStream.flush();
        } catch (IOException e) {
            log.error("下载模板接口异常", e);
            throw new UserException("模板下载失败!");
        }

    }