Java下载Excel模板文件的简单实现方法

    /**
     * 下载导入模板
     */
    @GetMapping("downloadExcel")
    public void downloadExcel(HttpServletResponse httpServletResponse) {
        InputStream inputStream = null;
        try (ServletOutputStream outputStream = httpServletResponse.getOutputStream()) {
            //设置响应头信息，包括下载后的文件名和编码等
            httpServletResponse.addHeader("content-disposition", String.format("attachment;filename= %s", URLEncoder.encode("导入模板.xlsx", "utf-8")));
            httpServletResponse.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
            httpServletResponse.setCharacterEncoding("UTF-8");
            //在文件夹里获取到文件并转为流
            inputStream = new ClassPathResource("/senseXlsx.xlsx").getInputStream();
            byte[] b = streamToByteArray(inputStream);
            httpServletResponse.getOutputStream().write(b);
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (inputStream != null) {
                try {
                    inputStream.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }