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upload file caching problem

Posted on 2004-10-18
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Last Modified: 2010-04-01
the new upload picture file does not display until i refresh the page. I believe this is a caching problem. So i added the following statements to prevent browser caching. But it didn't work. Is this a caching problem or something else? If this is a caching problem, how can i solve it?

 <%
response.setHeader( "Cache-Control", "no-cache" );
response.setHeader( "Pragma", "no-cache" );
response.setIntHeader( "Expires", 0 );

%>
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Question by:jeff1919
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siliconeagle earned 1000 total points
ID: 12348340
you can add a date to the end if the image url to prevent image caching e.g:-
<img src="img.gif?<%= (new Date()).getTime() %>" />

is it the old image you see, or just no image?
if it's no image have you closed the file after writing it, maybe the webserver cannot read the file as it's open for writing.
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by:siliconeagle
ID: 12349193
some more headers to try are:-


// always modified
response.setHeader( "Last-Modified",""+(new Date()));
 
// HTTP/1.1
response.setHeader( "Cache-Control","no-store, no-cache, must-revalidate");
response.setHeader("Cache-Control","post-check=0, pre-check=0");
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