用spring mvc下载资源文件中的.xlsx文件

@Controller
public class DownloadController {

    @RequestMapping("/download")
    public void downloadFile(HttpServletResponse response) {
        try {
            // 设置响应的内容类型和头信息
            response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
            response.setHeader("Content-Disposition", "attachment; filename=\"example.xlsx\"");

            // 读取.xlsx文件并写入响应的输出流中
            FileInputStream fileInputStream = new FileInputStream("path/to/example.xlsx");
            OutputStream outputStream = response.getOutputStream();
            byte[] buffer = new byte[4096];
            int bytesRead;
            while ((bytesRead = fileInputStream.read(buffer)) != -1) {
                outputStream.write(buffer, 0, bytesRead);
            }
            fileInputStream.close();
            outputStream.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}