not sure about use of PageContext, never used it.
... or about the "correct" way to pass info from servlet to jsp (if there
even is one), but if it helps, I use this approach and it works well:
// in the servlet's doPost()
request.setAttribute(MyConstants.MY_OBJECT_CONSTANT_NAME, myObject);
request.getRequestDispatcher("blah.jsp").forward(request, response);
// in the JSP
Object myObject = request.getAttribute(MyConstants.MY_OBJECT_CONSTANT_NAME);
> -----Original Message-----
> From: Michael Neel [mailto:[EMAIL PROTECTED]
> Sent: Wednesday 26 October 2005 16:12
> To: users@tomcat.apache.org
> Subject: getPageContext returns null
>
>
> Hi,
>
> Quick overview, I'm setting some variables in the session from my
> servlet to be used in my JSP/JSTL page. Everything is fine if a JSP
> page is called before the servlet, but a call to the servlet first
> results in JspFactory.getPageContext to return null.
>
> To reproduce, I restart the Tomcat server, clear the session cookies
> from the client, and go to the servlet URL directly.
>
> I found this bug report which is the problem exactly:
> http://issues.apache.org/bugzilla/show_bug.cgi?id=3752
>
> If i go to a jsp page after starting the server, any JSP page, then go
> to the servlet url directly everything works as expected. Like the
> bug poster, if this is a no-no I'm curious why the factory and the
> call to create the context throw no exceptions. I'm more curious
> though as to what the correct way is for passing information from
> servlet to jsp.
>
> Mike
>
> A stripped down version of the code in question:
>
> RequestDispatcher dispat = null;
>
> JspFactory factory = JspFactory.getDefaultFactory();
> PageContext pageContext = this.factory.getPageContext(
> this, request, response,
> null, false, JspWriter.DEFAULT_BUFFER, true);
>
> // expected URL is something like /AppName/SevrletName/45
> // path_info is '/45'
> String id = request.getPathInfo().substring(1);
>
> // *snipping* sql-setup to look up 'id'
> ResultSet rs = sql.executeQuery();
> if(rs != null) {
> rs.next();
> String title = rs.getString("title");
> String preamble = rs.getString("preamble");
>
> pc.setAttribute("title", title,
> PageContext.REQUEST_SCOPE);
> pc.setAttribute("preamble", preamble,
> PageContext.REQUEST_SCOPE);
>
> dispat =
> getServletContext().getRequestDispatcher('page1.jsp');
> }
> else {
> pc.setAttribute("errorMessage", "ID was not found",
> PageContext.REQUEST_SCOPE);
> dispat =
> getServletContext().getRequestDispatcher('error.jsp');
> }
>
> factory.releasePageContext(ps);
>
> dispat.forward(request, response);
>
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