CODEWITHSUNDEEP
javamultithreadingsessionjspsession-variables
Ajay
Ajay

Reputation: 7428

Session variables in JSP

How is a session object attached to each thread of a servlet? I believe its not a ThreadLocal, so how is it attached to each servlet thread?

Upvotes: 1

Views: 1060

Answers (2)

Will Hartung
Will Hartung

Reputation: 118641

It's not attached to the Servlet thread, it's attached to the HttpServletRequest. Each invocation of the Servlet is passed a HttpServletRequest and an HttpServeltResponse. So, they're just local variables to the Servlet instance -- nothing to do with the thread.

Upvotes: 2

Asaph
Asaph

Reputation: 162801

A JSESSIONID variable gets set in the client's cookie (or URL sometimes) and the container uses the JSESSIONID to look up the appropriate session for the given request.

Upvotes: 1

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