Simple download apps to list files from server and download to your device using Spring Boot and Thymeleaf.
I used to transfer files between devices through Wi-Fi with this without flashdisk or harddisk.
change the 'root-path' at application.yml to directory path you wanted, for example: 'C:' for windows or '/home/' for linux or any directory to make it as root path. Then run apps and open 'localhost:8765/' to see all files in the directory and click file to download.
if you use docker you don't need to change the application.yml, just run the command docker build --tag downlord . to build and run docker run -dp 8765:8765 -v /home/username:/usr/share/downlord --name downlord downlord. it will run the app in port 8765 and share "home/username" directory to be downloaded as server. you can change the directory if you want in the command.