groovy - Create and Get Session in grails -


currently working grails. tried create , session in grails controller:

if (user) {     session.user = "user"     flash.message = "hallo ${user.fullname}!!!!!"     println(session.user)     redirect(action: "login")   }

but failed create , get.

about session object in grails, try following official document: [http://grails.org/doc/2.3.4/ref/servlet%20api/session.html][1]

so, try : 

session["user"] = "john" asset "john" == session.user

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