Return a new thymeleaf page fragment and some file from spring controller - spring

Question

Tell me how to properly implement the spring controller. I want it to return a new thymeleafe page fragment and Excel file at the same time.
I know how to implement a controller to return a page fragment:
#GetMapping("/some_url")
public String updateFragment(Model model) {
model.addAttribute("attribute", someAtribute);
return "some_page :: fragment";
}
And I know how to implement a controller for downloading files:
#GetMapping("some_url")
public void getReport(HttpServletResponse response) throws IOException {
response.setContentType("application/octet-stream");
String headerKey = "Content-Disposition";
String headerValue = "attachment; filename=file.xlsx";
response.setHeader(headerKey, headerValue);
try {
FileInputStream inputStream = new FileInputStream(new File("path_to_file"));
Workbook workbook = WorkbookFactory.create(inputStream);
Sheet sheet = workbook.getSheetAt(0);
int row = 12;
Row exampleRow = sheet.getRow(12);
int count = 1;
for (SIZForKomplex s : objectList) {
if (s.getNumber() != 0) {
sheet.getRow(row).setRowStyle(exampleRow.getRowStyle());
sheet.getRow(row).setHeight(exampleRow.getHeight());
for (int i = 0; i < 8; i++) {
sheet.getRow(row).getCell(i).setCellStyle(exampleRow.getCell(i).getCellStyle());
}
sheet.getRow(row).getCell(0).setCellValue(count);
sheet.getRow(row).getCell(1).setCellValue(s.getNomenclatureNumber());
sheet.getRow(row).getCell(2).setCellValue(s.getNamesiz());
sheet.getRow(row).getCell(3).setCellValue(s.getSize());
sheet.getRow(row).getCell(4).setCellValue(s.getHeight());
sheet.getRow(row).getCell(5).setCellValue(s.getNumber());
sheet.getRow(row).getCell(6).setCellValue(sizRepository.findById(s.getId()).orElseThrow().getEd_izm());
sheet.getRow(row).getCell(7).setCellValue(" ");
row++;
count++;
}
}
inputStream.close();
ServletOutputStream outputStream = response.getOutputStream();
workbook.write(outputStream);
workbook.close();
outputStream.close();
} catch (IOException | EncryptedDocumentException
ex) {
ex.printStackTrace();
}
}
But how do I combine this. I need to update the data on the page and download the Excel file