How to use PrimeFaces p:fileUpload? Listener method is never invoked or UploadedFile is null / throws an error / not usable

Question

I\'m trying to upload a file using PrimeFaces, but the fileUploadListener method isn\'t being invoked after the upload finishes.

Here is the view:

Answer 1

I had the same issue, due to the fact that I had all the configuration that describe in this post, but in my case was because I had two jquery imports (one of them was primefaces's query) which caused conflicts to upload files.

See Primefaces Jquery conflict