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Date: Thu, 30 Aug 2007 09:12:42 -0700 (PDT)
From: Dave Newton <newton.dave@yahoo.com>
Subject: Re: How to access request & session objects in jsp using struts2 tags
To: Struts Users Mailing List <user@struts.apache.org>
In-Reply-To: <42db7f0a0708300906w7e363370y7a97bd152171914a@mail.gmail.com>
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> On 8/30/07, afp wrote:
>> I am trying to identify whether a button has
>> been clicked or not in my **jsp**.

Emphasis mine.

The real question is why is that being done in the JSP
directly from the request parameters when it would
probably be better to set a flag based on whatever
business logic might be happening or access the value
from an action property or determine if the
submission-based differences could be better isolated
with an application resource or different result, etc.

--- Chris Pratt <thechrispratt@gmail.com> wrote:

> If you just need access to the Request Attributes,
> try implementing
> RequestAware in your action.  If you need access to
> other, more
> Servlet specific, parts of the Request, you'll have
> tto implement
> ServletRequestAware.  Similarly for Sessions, if you
> just need the
> attributes, implement SessionAware, if you need full
> access implement
> ServletRequestAware and call request.getSession().
>   (*Chris*)
> 
> On 8/30/07, afp <arup.francis@bankofamerica.com>
> wrote:
> >
> > Hi,
> >
> >    I am trying to identify whether a button has
> been clicked or not in my
> > jsp.
> > The way I do this or is trying to do this is to
> access the request object
> > and then check in that for the button name. The
> code is as shown below
> >
> > The button which was clicked is coded as shown
> below
> > <s:submit value="Continue"
> action="InitAction_stub" type="image"
> > title="Continue" />
> >
> > The piece of code where I am trying to check for
> the button in the jsp
> > <s:if test="#request['action:InitAction_stub.x']
> != null">
> >         HI
> >         <s:set name="abc.currentDisplaySection"
> value="%{'All'}" />
> >         <%
> request.setAttribute("currentSection","All"); %>
> > </s:if>
> > <s:else>
> >         <%
> request.setAttribute("currentSection","no"); %>
> > </s:else>
> >
> > Now I know that the parameter
> "action:InitAction_stub.x" is present in the
> > request Map as I can see that in the Action class
> which later forwards to
> > the jsp. But I am unable to access it in the jsp.
> >
> > Is the way I am trying to access the request
> parameter wrong?
> > If so how do I get a request parameter in the jsp
> - I saw the following
> > usage in one of the struts2 pages
> >
> > <s:property
> value="#request['action:InitAction_stub.x']"/> this
> shud ideally
> > print out the value of the button or any other
> request parameter. But
> > nothing gets printed. So where am I going wrong
> and what do I need to do?
> >
> > Also along with this is there any way I can do the
> below without using
> > scriptlets
> > <% request.setAttribute("currentSection","All");
> %>
> >
> > Also say I have an object in my action class will
> I be able to rewrite the
> > value of that object by using the set statement
> i.e. will <s:set
> > name="abc.currentDisplaySection" value="%{'All'}"
> /> where abc is an object
> > which is specified in the action class and has
> getters and setters. My doubt
> > is whether the above statement will update the
> currentDisplaySection
> > variable under abc object?? so that if I say print
> out the value later using
> > a <s:property value="abc.currentDisplaySection"/>
> it shud print out 'All".
> > Will this work??
> >
> >
> > TIA,
> > Arup
> > --
> > View this message in context:
>
http://www.nabble.com/How-to-access-request---session-objects-in-jsp-using-struts2-tags-tf4354438.html#a12407850
> > Sent from the Struts - User mailing list archive
> at Nabble.com.
> >
> >
> >
>
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