RequestDispatcher across two web contexts

[BIJO_THOMAS <BI...@inf.com>]

Hello,

This is about forwarding the HttpRequest from a servlet in one web
application to another.

Here is the code snippet I am using.

ServletConfig config = getServletConfig();
ServletContext sc = config.getServletContext();
ServletContext newSC = sc.getContext("/Mainmenu");
if(newSC != null)
{
	RequestDispatcher rd = newSC.getNamedDispatcher("/mmenu");
	rd.include(req,res);
}

The RequestDispatcher returned by newSC.getNamedDispatcher("/mmenu") is null
and therefore rd.include() raises NullPointerException.  Both web
applications are deployed in the same tomcat server (ver 3.1) and '/mmenu'
is a registered alias in the Mainmenu.war's web.xml.  Also the URL
http://serverhost:port/Mainmenu/mmenu gives the expected result.

I am able to successfully dispatch request to other non-java files including
jsp files.  

It will be greatly appreciated if anybody can throw some light into it.

Regards,
Bijoy
Email: bijo_thomas@inf.com

Re: RequestDispatcher across two web contexts

["정병완 (byung-wan,jung)" <bw...@selim.co.kr>]

HI,

Maybe, I thik that I will help you. 

-----------------------------
public class WebletServlet extentds HttpServlet {

    public static final String jsppage = "/jsp/Screen.jsp";

    ..
    public void service( HttpServletRequest req, HttpServletResponse res)
        throws ServletException, IOException {

        RequestDispatcher sld = this.getServletContext().getRequestDispatcher(jsppage);
        sld.forward(req, res);
    }
}
 

----- Original Message ----- 
From: BIJO_THOMAS <BI...@inf.com>
To: <ge...@jakarta.apache.org>
Sent: Monday, August 07, 2000 4:41 PM
Subject: RequestDispatcher across two web contexts


> Hello,
> 
> This is about forwarding the HttpRequest from a servlet in one web
> application to another.
> 
> Here is the code snippet I am using.
> 
> ServletConfig config = getServletConfig();
> ServletContext sc = config.getServletContext();
> ServletContext newSC = sc.getContext("/Mainmenu");
> if(newSC != null)
> {
> RequestDispatcher rd = newSC.getNamedDispatcher("/mmenu");
> rd.include(req,res);
> }
> 
> The RequestDispatcher returned by newSC.getNamedDispatcher("/mmenu") is null
> and therefore rd.include() raises NullPointerException.  Both web
> applications are deployed in the same tomcat server (ver 3.1) and '/mmenu'
> is a registered alias in the Mainmenu.war's web.xml.  Also the URL
> http://serverhost:port/Mainmenu/mmenu gives the expected result.
> 
> I am able to successfully dispatch request to other non-java files including
> jsp files.  
> 
> It will be greatly appreciated if anybody can throw some light into it.
> 
> Regards,
> Bijoy
> Email: bijo_thomas@inf.com
> 
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