Check if Cookie exists with JSP EL

Question

I am trying to check if a cookie exists on a JSP page using the Expression Language.

I have a cookie called persist which is set to either empty string

Answer 1

If I understand correctly, you want to detect that it either doesn't exist or is empty.

EDIT: ah. To verify that it doesn't exist, it must be null and not empty.

    
   Cookie doesn't exist