----- Original Message -----
Sent: Monday, August 06, 2001 6:22
PM
Subject: RE: What happened to this
mailing list???
Hmm..I am able to forward to a different web-app
context no problem..although I am not sure if it is ok to do so or not. What I
do is:
web-app context user is in =
/inside
web-app context user wants to go to =
/
String forwardPath =
"/index.jsp";
String contextPath = request.getContextPath();
// yields /inside in this example
ServletContext sc =
getSerlvetContext().getContext(forwardPath);
sc.getRequestDispatcher(forwardPath).forward(request,response);
Right now this seems to work fine. Maybe its not
allowed..but it does work. The caveat is that I have to use <%= contextPath
%> in EVERY resource link, image, etc on every JSP page. My purpose is to
make sure a web-app is properly developed so that it could be deployed with
othe web-apps without any conflict, any improper resource links,
etc.
I am
going to be playing around with this a bit more, but right now it seems to
work. I am only testing this in Orion, so I can't possibly know if it works in
other servlet engines. Needless to say, I did add the redirect capability to
my MVC framework just incase.
Servlet2.3 doesn't specify any sharing between web
applications. You can't forward request from one application to
another this is not possible with existing spec. If you need this kind
of functionality you can get with redirect. As far with servlet2.3
each web application is independent and their resource loading and class
loading are different.
Kesav Kumar Kolla
Voquette Inc
650 356
3740(W)
510 889 6840(R)
Voquette...Delivering Sound Information
Hi
all,
Deploying 3 web-apps in one application in Orion; Outside, Inside and
Admin. Outside is mostly static, with a login section. The login section
takes the user to the Inside app by calling
into it via a /inside/Login.do?command=Login (using the popular Struts MVC
syntax). This all works. Using
Struts MVC (and even with my own), it appears that when trying to forward
to a different web-app context, its not possible. At least not yet..could
be my code. In MVC, the ControllerServlet running in one context, tries to
forward to a resource. Almost always this is in the same servlet-context
(web-app) as the ControllerServlet. In my case, I want a user to log out,
which takes them to the outside index.jsp page again. The normal
RequestDispatcher() is part of the Inside web-app context, so when it
tries to forward to a /index.jsp, I would think the / would indicate the
context to forward to. This doesn't appear to work. So then I tried using
the ServletContext.getContext(url) call where the url is the same as the
forwarding resource. Thus, to forward from any web-app to the outside
"root" index.jsp page, I do something like:
getServletContext().getContext("/index.jsp").getRequestDispatcher("/index.jsp").forward(request,
response); This gets the right ServletContext of the root app. I
have tested this by creating an object and setting it as an attribute in
the /index.jsp, and in the ControllerServlet I get the ServletContext and
look up the attribute (before trying to forward), and it finds it. So when
using that ServletContext and trying to forward, its still not finding the
page. I continue to get 404 not found
errors.
My question is..is it possible to forward from
one web-app to another? It appears to work when I go from the / to the
/inside context just fine (at least it appears that on the JSP page using
a href or form action url path of /inside/Action.do, it does work by
calling into the /inside web-app). I can't imagine that deploying multiple
web-apps limits you to not even forwarding to another web-app. I do know
you can't share any data between web-apps, but being able to jump from one
web-app to another via links and via forwarding should work..shouldn't it?
The API isn't exactly clear on this..but I will look at it
again.
Thanks.
