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refresh a page

Posted on 2004-04-30
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Last Modified: 2010-04-01

Hello All

How can I invoke a .jsp page to refresh/reload?

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Question by:VolSpeak
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7 Comments
 
LVL 4

Expert Comment

by:indigostark
ID: 10959247
<META HTTP-EQUIV="refresh" CONTENT="5">

this will refresh the page every 5 seconds
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Author Comment

by:VolSpeak
ID: 10959438

I just want it to refresh once, when the user loads it
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LVL 35

Expert Comment

by:TimYates
ID: 10959826
<%
        // Set to expire far in the past.
        response.setHeader("Expires", "Sat, 6 May 1995 12:00:00 GMT");

        // Set standard HTTP/1.1 no-cache headers.
        response.setHeader("Cache-Control", "no-store, no-cache, must-revalidate");

        // Set IE extended HTTP/1.1 no-cache headers (use addHeader).
        response.addHeader("Cache-Control", "post-check=0, pre-check=0");

        // Set standard HTTP/1.0 no-cache header.
        response.setHeader("Pragma", "no-cache");
%>

At the top of the jsp should (might) stop the user from caching it, so they will see the new copy every time...

Some versions of IE don't care at all, and some proxy servers will ignore these settings, thus screwing you up...

Then, you need to try putting dummy random into the URL line...
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Author Comment

by:VolSpeak
ID: 10959842

>>Then, you need to try putting dummy random into the URL line...

Im confused as to what you mean here

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LVL 35

Accepted Solution

by:
TimYates earned 200 total points
ID: 10960028
When you link to the URL for the page, make the url something like:

String url = "whatever.jsp?time=" + System.currentTimeMillis() ;

So that the URL is different every time, thereby fooling rubbish proxy servers :-)
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Author Comment

by:VolSpeak
ID: 10960375
<%
        // Set to expire far in the past.
        response.setHeader("Expires", "Sat, 6 May 1995 12:00:00 GMT");

        // Set standard HTTP/1.1 no-cache headers.
        response.setHeader("Cache-Control", "no-store, no-cache, must-revalidate");

        // Set IE extended HTTP/1.1 no-cache headers (use addHeader).
        response.addHeader("Cache-Control", "post-check=0, pre-check=0");

        // Set standard HTTP/1.0 no-cache header.
        response.setHeader("Pragma", "no-cache");
%>

So I just put this in my index.jsp and everytime index.jsp is visited it will be refreshed. Im using mozilla with apache tomcat.
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LVL 35

Expert Comment

by:TimYates
ID: 10962616
should be :)

Good luck :)
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