Whitelist sun.util.calendar package.Open feilix web console in your browser windowSearch and open Deserialization Firewall Configuration In the whitelist field add sun.util.calendar package and save
you will have to write your own eventhandler and in that eventhandler you can write the information to the file system or database based on your requirement
Oh okto display the uploaded image you will have to write the code similar to the link that I sharedwe do not have anything out of the box to accomplish that capability