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| Category |
| JSP-Java Servlets |
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Question
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Last Modified: Apr 21, 2003
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| I'm not seeing the latest version of my page generated by a
Servlet/JSP what's happening and how do I fix it? |
| Answer |
Gary (of gentlyjobs.net) writes:
This is probably caused by your ISP caching the pages generated
by the Servlet/JSP and not returning the latest version of the page.
To get around this you need to set the HTTP headers "Cache-Control"
and "Pragma" to the value "no-cache" in the page to stop any proxy
servers caching those pages.
To do this add the following to your Servlet/JSP:
response.setHeader ("Cache-Control", "no-cache");
response.setHeader ("Pragma", "no-cache");
Both are needed to cover servers that are still using HTTP1.0.
Also, if you have pages not served up by Servlets/JSP but they may
change then you can add:
<meta http-equiv="cache-control" content="no-cache" />
<meta http-equiv="pragma" content="no-cache" />
In the "head" section of your HTML document to prevent a proxy server
from caching the page.
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