I had the same problem using GNUJSP - I presume the solution will be
applicable to your situation as well.
The problem is, from what I can tell, that JSP uses different sources for
it's CLASSPATH information between run-time and compile time.
It's documented that the effect of including your beans path in the servlet
engine level classpath (called wrapper.classpath in GNUJSP) is to allow your
beans to run within any JSP page, but with the downside being that the beans
aren't dynamically reloaded when they change. If you include the classpath
in the servlet repository's properties file instead, the class loader for
the servlet takes care of re-loading the bean.
The problem you then run into, and I didn't see this well documented, is
that the JSP pages no longer compile - as you point out.
The fix I found is to not only add the beans path to the properties file
(e.g. repositories=[BEANSPATH]), but to change the JSP compiler parameters
to include the beans path (e.g.
servlet.gnujsp.initArgs=compiler=builtin-javac -classpath
%classpath%:%repository%:[BEANSPATH] -d %repository% -deprecation %source%.
The documentation suggests that an alternative way to do this is to create
an init parameter %beanspath% and insert this into the compiler arguments,
but I couldn't get this to work.
Hope this helps!
Sam Weiner
----------
From: S. N. Prasanna[SMTP:[EMAIL PROTECTED]]
Reply To: S. N. Prasanna
Sent: Wednesday, March 31, 1999 4:40 AM
To: [EMAIL PROTECTED]
Subject: Dynamic loading of beans
Hi,
I am developing an application using JSP. My environment is
NT4.0
Service pack 4, IIS-4.0, Jrun 2.3.
I am putting all the classes created by me including JSP beans in a
package
named "myClasses" under
C:\jrun\classes directory, which is in the class path. The problem
is these
classes are not loaded dynamically. What can I do to make these
classes
especially JSP beans to load dynamically. If I put them in servlets
directory JSP page compiler gives me error : "class jsp.classname"
is not
found. If I put beans in class path and every time I make some
changes to
the bean( which is common at the time of development) I have to
shut down
and restart the server to make changes to take effect. recompilation
of JSP
also doesn't help.
Is there any way by which I can force the JSP to load/compile
changed beans
dynamically.
Thanks in advance
Prasanna
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