how can i trigger multi file download at one time?

Flow
1

hi,

i have requirement that when user click one button, then trigger multi file download at browser side. is there any possible way?

2

There are some examples here: https://vaadin.com/components/vaadin-upload/java-examples

Try calling upload.setMaxFiles with some number if it doesn’t work by default.

3

sorry, my question is to “DOWNLOAD” but not “upload”. but thank you all the same. i just want to know if there’s an official way to do that.

4

Oops, sorry! My mistake. It could be doable with a JavaScript workaround (some ideas could be picked from this one: https://stackoverflow.com/questions/18451856/how-can-i-let-a-user-download-multiple-files-when-a-button-is-clicked ), but I haven’t tried it.

5

i think so. use js is the last option T-T