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From Ralph Merrick <javahel...@yahoo.com>
Subject Cache question
Date Tue, 01 Oct 2002 21:39:55 GMT
Hello all. Cache question. I have a jsp form that is
being forward from a login page that is doing
validation from a database. The jsp form has buttons
and a click on each specific button will set a hidden
input a specific value and and the action will go to
another jsp page, where depending on what the hidden
input was set to , will jsp forward to the page that
is requested. But on click a javascript back, <INPUT
TYPE="button" VALUE="Cancel"
onClick="javascript:history.go(-1)">or the browser
back button we get the previous page, but a click on
any different button will go to the page you were just
at, not the page it should go to. I have http 1.1
configured on my tomcat and I know that if on the page
where the buttons reside, I add this :
<%
//HTTP 1.1
    response.setHeader("Cache-Control","no-cache");
//HTTP 1.0
    //response.setHeader("Pragma","no-cache");
//prevents caching at the proxy server
    //response.setDateHeader ("Expires", 0);%>
Then if I click on let say button a to go to a.jsp and
click back , I get this:
'Warning: Page has Expired The page you requested was
created using information you submitted in a form.
This page is no longer available. As a security
precaution, Internet Explorer does not automatically
resubmit your information for you. 
To resubmit your information and view this Web page,
click the Refresh button. '
Is there any way to just to see the previous page and
have it have, now lets say a click on button b to go
to b.jsp and not to the cached a.jsp
Thanks 





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