hi,
what is a RequestDispatcher ?
> RequestDispatcher rd=getServletContext().getRequestDispatcher("/myapp/showinfo.jsp");
I can't find the ServletContext.getRequestDispatcher(...) from the API.
Govind Seshadri wrote:
> My article "Understanding JSP Model 2 architecture" in this
> month's issue of Javaworld may be helpful. Please see:
>
> http://www.javaworld.com/javaworld/jw-12-1999/jw-12-ssj-jspmvc.html
>
> Govind
>
> Greg Hodges wrote:
> >
> > Hi all,
> >
> > I need help understanding and implementing the Model-2 Architecture advocated by
>folks like Craig.
> >
> > What I would really like someone to describe is the how, and more importantly the
>where of implementing the Model-2 Architecture. I'll attempt to describe a
>"HelloWorld-ish" application I created to use Model-2 techniques as I understand them.
> >
> > Let's say I have a jsp page called userinfo.jsp. userinfo.jsp exist in a folder
>called myapp on the root of my webserver. So it would be accessed like
>http://servername/myapp/userinfo.jsp. Now, I have two Java classes: StoreUser, which
>is the "controller" servlet and UserBean which is a Bean which holds info entered in
>the form on userinfo.jsp. Finally, I have another jsp page called showinfo.jsp whose
>purpose in life is to display info. stored in the UserBean.
> >
> > Now, userinfo.jsp "calls" the StoreUser servlet(<FORM action="/myapp/StoreUser">).
> StoreUser creates a session, a UserBean, and attempts to store the UserBean in the
>session. Then StoreUser forwards the request to showinfo.jsp--
> >
> > RequestDispatcher
>rd=getServletContext().getRequestDispatcher("/myapp/showinfo.jsp");
> >
> > Next, in showinfo.jsp I have the following at the top of showinfo.jsp:
> >
> > <%@ page session="true" import="learn.UserBean" %>
> > <jsp:useBean id="idBean" scope="session" class="learn.UserBean" />
> >
> > Finally in showinfo.jsp I have a line like:
> > <%= idBean.getUserID() %>
> >
> > I mapped /myapp/StoreUser to the StoreUser servlet, which exist in directory
>structure of my servlet container, JRun.
> >
> > I'm sure I've done a number of things incorrectly, but my biggest source of
>confusion is how do I get the jsp files that exists under the directory structure of
>my webserver to know about the session created by the StoreUser servlet which exist
>under the directory structure of JRun.
> >
> > I simply don't know where to place all the directories and files so that they
>"share" the same context, session, etc.
> >
> > I would appreciate as much info./example code/example dir. structures as anyone is
>willing to provide.
> >
> > Thanks,
> >
> > Greg
> >
> > ===========================================================================
> > To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff JSP-INTEREST".
> > FAQs on JSP can be found at:
> > http://java.sun.com/products/jsp/faq.html
> > http://www.esperanto.org.nz/jsp/jspfaq.html
>
> --
> Govind Seshadri <[EMAIL PROTECTED]>
> jGuru.com - Your Gateway to the Java Universe
> http://www.jguru.com
>
> ===========================================================================
> To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff JSP-INTEREST".
> FAQs on JSP can be found at:
> http://java.sun.com/products/jsp/faq.html
> http://www.esperanto.org.nz/jsp/jspfaq.html
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