Resuelva perfectamente el nombre del archivo de descarga ilegible y sin formato de sufijo

 @GetMapping("/download")
 public void InfoDownload(HttpServletResponse response) throws IOException {
        ClassPathResource resource = new ClassPathResource("xxxx/导入模板.xlsx");
        //设置下载后的文件名 这里设置不会出现乱码
        String fileName = "元素导入模板.xlsx";
        fileName = URLEncoder.encode(fileName, "UTF-8");
        // 配置文件下载 上面有后缀这里又加了一次后缀 这样下载才会带后缀名
        response.addHeader("Content-Disposition", "attachment;fileName=" + fileName+ ".xlsx;filename*=utf-8''"+fileName+".xlsx");
        //设置下载文件格式 是什么格式就去百度找相对应的文件格式
        response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
        response.setCharacterEncoding("UTF-8");
        byte[] buffer = new byte[1024];
        //文件输入流
        InputStream fis = null;
        BufferedInputStream bis = null;
        //输出流
        OutputStream os = null;
        try {
            os = response.getOutputStream();
            fis = resource.getInputStream();
            bis = new BufferedInputStream(fis);
            int i = bis.read(buffer);
            while (i != -1) {
                os.write(buffer);
                i = bis.read(buffer);
            }
        } catch (Exception e) {
            log.error("输出流失败", e);
        }
        try {
            bis.close();
            fis.close();
        } catch (IOException e) {
            log.error("流关闭失败", e);
        }
    }

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Origin blog.csdn.net/qq_42990433/article/details/124750503
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