On 10/03/2021 15:14, Rony G. Flatscher (Apache) wrote:
Is there a way to know/infer that a JSP got freshly compiled from e.g. a taglib
library?
For caching purposes it would be necessary to learn whether a JSP got
recompiled as the cache should
be purged in that case.
Is there a way to find out whether a JSP run is the very first after
(re-)compilation?
Or can one rely that if a JSP gets recompiled that a new PageContext gets
created for it (or if
reused does not contain any custom attributes placed there earlier at the
PAGE_SCOPE)?
Page scope gets reset at the end of a request so that won't work.
It might not be perfect (containers are allowed to unload unused
servlets/JSPs) but in you are using Tomcat and haven't configured
maxLoadedJsps or jspIdleTimeout then you should be able to use the
jspInit() method. (See JSP spec for details).
Mark
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