Session is Lost in Session Scope Controller in Spring MVC App

Why is my session lost and created as new in every servlet request?

I got a question from coworker:

Fiddling with some web stuff on spring mvc one my localhost I can’t for the life of me figure our why I am getting a new session created on every request. Debug lots making sure each controller has a @Scope(“session”). Sometimes session is there sometimes not, but mostly not and it is new on every request. Checked production and session seams find!

The answer is, finally he figured out himself, localhost is not a valid domain name and cookies won’t be created.

If we test on localhost, we whould give it a name like ‘’ it would just work well.


  1. Session is lost and created as new in every servlet request