How to do this?

[Chetan Parekh]

We have an application developed as per MVC architecture using JSP, Servlet and JavaBeans.

I have a single controller that handle request from user.

Now I want to implemented logic that detect
(1)Refresh
(2)Back
(3)Multiple Submit

How to do this?

[Adeel Ansari]

Requesting for the page and refresh has no distinction at the server.

Back button mostly function from browser proxy, if not then it is also the same as sending a request.

Yeah, but for multiple submit, like if user press a button multiple times, there is a way to control that.
http://www.onjava.com/pub/a/onjava/2003/04/02/multiple_submits.html
[ November 21, 2005: Message edited by: Adeel Ansari ]

[Stefan Evans]

Another possibility would be to use the synchronizer token pattern.
http://www.javaworld.com/javaworld/javatips/jw-javatip136.html

Basically you issue a "token identifier" to each page, so you can detect duplicate submissions/refreshes.

[Vishnu Prakash]

Check out this link

Double Submit Problem