How to send a file for download in a browser?

Question

JavaScript

I have a web application, Spring, on the html front with thymeleaf, js in some places.
There is a scenario in which the user enters data into the form, I need to generate a file from them and issue it to the user. I'm generating the file, but I can't figure out how to give it away.
There was an idea to put it on the server and make a download link, but the fact that the browser forbids links with "file:" interferes.

How else to push my file into the browser?

Answer 1

Here are examples of the implementation of download files
https://www.javainuse.com/spring/boot-file-download
https://o7planning.org/ru/11765/spring-boot-file-d...
https:// stackoverflow.com/questions/29816121/creat...

Answer 2

Why do you need links file:, junkie? 0_o
file:this is for links to local files on the user's computer, not abstract "files" on the server.
Files from the server fly on the same http:/ https:as everything else.
When processing the form, you return a normal http response. Here in this answer you put the title
Content-Dispositionand spit the contents of the file in its purest form.