Refresh/Reload page vs Button click - Help!

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Web tier: servlets, JSP, Web frameworks: Refresh/Reload page vs Button click - Help!

  1. Refresh/Reload page vs Button click - Help! (3 messages)

    Hi,

    Is there any way for the servlet to distinguish between a request from a button click(form submit) versus a request from the "Refresh" or "Reload" button of the browser? Thing is, we are trying to disallow/(not process) requests from the latter.

    Just looking for better alternatives to loading the page in a new window with no browser buttons.

    Any advice is very much appreciated! Thanks in advance!
  2. Take a look at struts framework. It has the feature to avoid resubmitting the form on refresh.
  3. You can do this by issuing an incremental formID to the form. When a form is submitted, store the formID in the user session. When a form is submitted check if the ID is less than or equal to the ID you alredy have in the user session, that way you can tell if a user has alredy submitted the form onece

    Cheers
    Adi
  4. Mulituser environment[ Go to top ]

    Hello, Adi. Maybe I have a lack of basic JSP/Servlet knowledge but: If I use a counter ID to find out if a form has been already submitted. what about this scenario: User A loads the JSP with the form. User B loads the JSP with the form, too. User A submits the form. The controller receives it and everything is OK incrementing the counter. User B now submits the form and the controller says: 'No, your counter is not valid.' (Because the submitted counter is lower than the controller's counter). Where is my logical error? Regards, Dirk