John Brecht wrote:
>
> I would like to be able to pass a list of parameters of arbitrary size to a
> servlet. The syntax for passing parameters via a properties file is:
>
> Syntax: servlet.[classname].initArgs=[name]=[value],[name]=[value],...
>
> This syntax requires you to have a different name for each parameter, so it
> can't be of arbitrary size. So what I need to do is have a safe delimiter
> character, for instance "&", that my servlet can use to parse a single
> string parameter into the list of parameters it represents. Is the
> ampersand (&) a safe choice as far as JServ is concerned? Is there a better
> choice?
>
> (My specific situation is that I would like to have my servlet be able to
> instantiate Classes given Strings passed to them by a client applet. This
> will be done using the URLClassLoader, which in turn needs a classpath to
> hunt for classes within. It would be nice to pass this classpath, which may
> consist of more than one URL, via the servlet parameters. That way, if I'm
> just changing the directory structure of my server a bit I don't have to
> recompile a bunch of applets and servlets. Instead, I just make the changes
> in the appropriate properties file.)
What I have done in this situation (and I stole the idea from the GSP
guys) is to supply my servlet with a "propfile" parameter as you
describe:
servlet.[classname].initArgs=propfile=/path/to/propfile.dat
which is the path to a file containing all the parameters I use for my
apps (jdbc urls, usernames, passwords etc...) and wrote a java class
(ConfigurationFileParser) to parse the file and store the parameters.
The propfile is then shared with another (non-JServ) java application
that users the same ConfigurationFileParser class. Any changes need to
be made once only, 'touch' the zone.properties file and the servlet is
reloaded at the next request, re-parsing my configurations file and
loading the new parameters...
Damian
--
Damian Fauth 201 Sussex Street
Software Engineer Sydney, NSW 2000
John Fairfax Holdings Ltd Australia
[EMAIL PROTECTED] Ph. (+612) 9282 3528
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