CODEWITHSUNDEEP
javaservlets
ThePhantom05
ThePhantom05

Reputation: 148

What's the difference between session.setAttribute and request.setAttribute?

What's the difference between session.setAttribute and request.setAttribute?

Upvotes: 7

Views: 22124

Answers (3)

HRB
HRB

Reputation: 23

Request attribute is only available in the request object lifetime. filters, servlet, jsp, include, forward uses same request object. Once the request is completed, request object is destroyed.

Whereas session attributes are available till the session ends or till the browser is closed. Hence the difference lies in the scope.

For example, the flow like page1->page2->page3->page4. session.setAttribute will make the key available in all pages. But if we use request.setAttribute in page2, then only page3 can get the key value set in page2.

request.setAttribute() may help you in getting rid of the hidden fields.

Upvotes: 2

Jk1
Jk1

Reputation: 11463

Difference lies in the scope. Request-scoped attribute is visible only while current request is processed. Session attribute is persistent between several requests from the same user. Session support mechanisms may differ (the most widespread are cookie based), but all of them guarantee session attrigbute persistence until user's session stays the same.

Upvotes: 3

DGomez
DGomez

Reputation: 1480

The scope, session attribute live all the session and the request attribute only in a request

Upvotes: 13

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