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Date: Thu, 30 Nov 2006 14:29:59 -0800
From: "Don Brown" <donald.brown@gmail.com>
To: "Struts Users Mailing List" <user@struts.apache.org>
Subject: Re: Struts 2 and passing data using interceptors
In-Reply-To: <7627298.post@talk.nabble.com>
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References: <7627298.post@talk.nabble.com>

If you only need request-scoped data, you don't need to bother with
the ScopeInterceptor or even the ServletRequestAware interface.
Simply define a getter on your action that returns the object in
question, then access it via your JSP via JSP EL (JSP 2.0), a JSTL
expression, or a Struts 2 property tag.

Don

On 11/30/06, fahlen <markus.fahlen@spray.se> wrote:
>
> Hi. I'm new to Struts and have a question regarding how data is passed from
> an Action (in Struts 2) to the JSP which one is redirected to after the
> action is executed. Reading the documentation on Struts 2, I've found that
> using the Scope Interceptor one can specify Action properties to be bound to
> the session or application scope. This is configured in struts.xml with the
> <interceptor-ref name="scope"> tag and then setting the appropriate
> parameters. See http://www.twdata.org/backups/WW/scope-interceptor.html
>
> Now, say I access an EJB from an Action. The method of the EJB returns some
> data. Is it good programming practice (in Struts) to store this data in the
> session object, later to be accessed from a JSP? This should allow me to
> pass the data, but perhaps there is some other alternative which is
> preferred. Storing information in the session object would maybe be good
> practice for data such as user id, contents of a shopping cart, etc. The
> scope I believe I am interested in is request scope, since the data returned
> from the invoked EJB method is data from an Amazon.com search, only to be
> used in the JSP displayed immediately after the execution of the Action.
>
> Would the preferred method in my case then be to implement the
> ServletRequestAware interface in the Action and store data of interest in
> the request object? I can't find any interceptor that does this. I'm sure
> one can create user defined interceptors, but if there's a standard method
> for this functionality provided by the framework, then I guess that would be
> the preferred way to go.
>
> I'm grateful for any input on the matter. Cheers.
> --
> View this message in context: http://www.nabble.com/Struts-2-and-passing-data-using-interceptors-tf2734105.html#a7627298
> Sent from the Struts - User mailing list archive at Nabble.com.
>
>
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