When i submit the page and hit the back button i can
submit the page again. The browser is caching the jsp
page. I have tried adding this code :
response.setHeader("Cache-Control","no-store");
response.setHeader("Pragma","no-cache");
response.setDateHeader ("Expires", 0);
to my jsp page but did not help.
Any solution to this problem? Experts please help
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sma3har wrote:
When i submit the page and hit the back button i can
submit the page again. The browser is caching the jsp
page. I have tried adding this code :

response.setHeader("Cache-Control","no-store");
response.setHeader("Pragma","no-cache");
response.setDateHeader ("Expires", 0);
to my jsp page but did not help.

Any solution to this problem? Experts please help

What problem, exactly? How is page caching related to resubmitting the
page? Those are separate issues.

Do you want to prevent the page from being cached, so that when you hit
the back button the page is re-rendered with fresh data? do you just
want to prevent the same form being submitted twice?

L.

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12/5/05, sma3har <sma3har (AT) yahoo (DOT) comwrote:
When i submit the page and hit the back button i can
submit the page again. The browser is caching the jsp
page. I have tried adding this code :

response.setHeader("Cache-Control","no-store");
response.setHeader("Pragma","no-cache");
response.setDateHeader ("Expires", 0);
to my jsp page but did not help.

Any solution to this problem? Experts please help

Add "no-cache" to cache-control header like this:
response.setHeader("Cache-Control","no-cache, no-store");

Try to add "must-revalidate" header.

What browser do you use? I hope you do not use

BTW, Struts can mark all responses as non-cachable for you, use
<controller nocache="true"/>. But remember that "no-store" appeared
only in 1.2.4 (or 1.2.2?) "no-store" is important for Firefox.

Michael.

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Well, those are really two separate issues, though if you achieve the
second you would no longer need to worry about the first. What you
probably want, though, is for the user to be taken to the login page
only if they've logged out (or their session has expired), in which case
the first problem still applies.

To redirect to a login page when the user hits back, you need to (a)
disable page caching as discussed in this thread and (b) include a check
in your actions (or using a servlet filter) to see if the session is
valid and do the redirect if not.

To avoid resubmits, there are a few options. The simplest is probably to
use Struts' built-in support for transaction tokens. You include a token
as part of the request when the form is submitted and, in the action
that processes the submit, you check if the token is valid and reject
the form submission if not.

L.

sma3har wrote:
I would like to prevent submitting the page twice as
well as when back button is pressed user should be
taken to login page.

Thanks

Laurie Harper <laurie (AT) holoweb (DOT) netwrote:

>sma3har wrote:
When i submit the page and hit the back button i
>can
submit the page again. The browser is caching the
>jsp
page. I have tried adding this code :

response.setHeader("Cache-Control","no-store");
response.setHeader("Pragma","no-cache");
response.setDateHeader ("Expires", 0);
to my jsp page but did not help.

Any solution to this problem? Experts please
>help
>>
>What problem, exactly? How is page caching related
>to resubmitting the
>page? Those are separate issues.
>>
>Do you want to prevent the page from being cached,
>so that when you hit
>the back button the page is re-rendered with fresh
>data? do you just
>want to prevent the same form being submitted twice?
>>
>L.
>>
>>
>>

>To unsubscribe, e-mail:
>user-unsubscribe (AT) struts (DOT) apache.org
>For additional commands, e-mail:
>user-help (AT) struts (DOT) apache.org
>>
>>

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