Re: What is the use of Page context ?

2002-11-17 Thread Dash Sam
pageContext is an object that changes for each .jsp page.  Each .jsp
page allocates a pageContext as one of the first things it does.

So if you put an attribute in there, it will last until the page ends,
either because the response has gone back to the browser or you have
done a jso:forward .../

It also has some getters for getting the request, response, etc
objects.

It also has some useful methods for convenience.

Check out the Javadoc.

-- Sam

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Re: NO CACHE on RESPONSE

2002-11-17 Thread Dash Sam
Better to use:
%
/** stop browser from caching, from the Resin FAQ www.caucho.com  */
response.setHeader(Cache-Control,no-cache,post-check=0,pre-check=0);
response.setHeader(Pragma,no-cache);
response.setHeader(Expires,Thu,01Dec199416:00:00GMT);
%

Also, you are going to have problems returning an image (binary) file
from JSP, it is really hard to avoid sending extra whitespace.
Better to use a servlet.

-- Sam




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Re: no cache

2002-11-17 Thread Dash Sam
%
/** stop browser from caching, from the Resin FAQ www.caucho.com  */
response.setHeader(Cache-Control,no-cache,post-check=0,pre-check=0);
response.setHeader(Pragma,no-cache);
response.setHeader(Expires,Thu,01Dec199416:00:00GMT);
%


-- Sam


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