(Sorry for bad title - it is download )
Hi I have a problem.
I was doing this example; https://vaadin.com/wiki/-/wiki/Main/Letting%20the%20user%20download%20a%20file
And I have a code like this
raportButton = new Button("Generuj Fakture");
raportButton.setDescription("Generuje Fakture na podstawie wpisów");
raportButton.setIcon(resourceGenerateInvoice);
FileDownloader fileDownloader = new FileDownloader(createResource());
fileDownloader.extend(raportButton);
...
private Resource createResource() {
return new StreamResource(new StreamSource() {
@Override
public InputStream getStream() {
RaportyDAO raportyDAO = new RaportyDAO();
raportyDAO.generateRaport(taskList, "admin", dateOdField.getValue(), dateDoField.getValue());
ByteArrayOutputStream fileExcelBytesArrayOS = new ByteArrayOutputStream();
....(actions)............
return new ByteArrayInputStream(fileExcelBytesArrayOS.toByteArray());
}
}, "Raporty.xlsx");
}
AND It run only once, data has changed and it behave like it has cached somewhere an old file and sugest me to download only first version of generated file …
What can be wrong ?
In debug mode it even dont go to getStream() method in second time … just straight to download old file.