Ron Ben-Natan wrote:
> Hi,
>
> Is it possible to use the JSP engine in a mode that is disconnected
> from an HTTP session? The JSP mechanism seems a great way to separate
> templates from code for formating purposes. For example, if I need to
> create a letter to a customer it only makes sense to place the letter
> in a JSP and pass it some objects to extract the customer name, address
> etc. from. The question is whether I must call this thing using an HTTP
> connection (which is very inconvenient and seems a performance problem)
Inconvenient how? Using a URLConnection in your application to contact a web
server that serves the JSP for you is pretty easy.
How much is performance an issue? For your example case (filling out a form
letter) I hardly think you'll be able to count the number of milliseconds
required.
>
> or is there a way for me to create a fictitious request and response
> and activate this as a Java program? (i.e. I have a Java program that
> has all the objects - I want to call the JSP to prepare the output stream
> and then extract the generated string from that call.
>
> Is this possible, and if so can someone forward me to some sample code that
> does this?
>
It is certainly possible, but you essentially need to simulate a servlet engine
(and the JSP page compiler) for this to work. If you are serious about not using
JSP pages the way they were designed (in a servlet-enabled web server
environment), then you probably want to look at other template-based solutions
that deal directly with files but allow embedded processing to pick up the data
items. (Or, for merge letters, there's always a word processor :-).
>
> Thanks,
> -Ron
> ([EMAIL PROTECTED])
>
Craig McClanahan
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