Hi Nic,
Just a question or two relating to the example you kindly provided
(below)
In my application, I want to deliver an HTML report as the result of
calling
the servlet. In the example I can't see anything being output following
the
> String checkUrl = request.getServletPath();
> out.println("<html><body><a href='" + checkUrl + "'>");
> out.println("Check the call here");
> out.println("</a></body></html>");
> // The client sees a completed page from here
> out.close();
I assume the results are seen at "checkUrl" - which is the servlet
itself.
This being the case, I guess there would be some conditional code that
inspects
the session variable to check for completion before your results are
formatted
and output.
Something along the lines of
if( session.statusVar == completed )
{
format results and output with out.println()
}
else
{
still working, out the same "busy" page
}
I suppose this would live in the goGet() method.
If I wanted to avoid the user have to keep clicking, I suppose could put
an auto-refresh header thingy in the busy page HTML. (Good or bad idea?)
Lastly, is there something more generic I could do using Filters?
Ideally I'd like to set up a "BusyFilter" that maps to the URL
pattern
/servlet/apps/*
Ideally this would display a busy page for any /servlet/apps... request
and require coding only in one place.
Thanks again,
Chris
>
>
> So here's an almost complete example of a servlet's doPost:
>
> public void doPost (...)
> {
> PrintWriter out = response.getWriter();
> response.setContentType("text/html");
> String caller = request.getParameter("caller");
> String problem = request.getParameter("problem");
> String priority = request.getParameter("priority");
>
> HttpSession session = request.getSession();
> Hashtable callDetails = new Hashtable();
> session.setAttribute("caller", callDetails);
>
> String checkUrl = request.getServletPath();
> out.println("<html><body><a href='" + checkUrl + "'>");
> out.println("Check the call here");
> out.println("</a></body></html>");
> // The client sees a completed page from here
> out.close();
>
> try {
> Connection con = conPool.getConnection();
> CallableStatement create
> = con.prepareCall("{ ? = call call_make ( ?, ? ) }");
> create.setString(2, caller);
> create.setString(3, problem);
> create.execute();
> String callId = create.getString(1);
>
> // Update the record
> callDetails.put(callId, "");
>
> CallableStatement create
> = con.prepareCall("{ call call_set_pri ( ?, ? ) }");
> create.setString(1, callId);
> create.setString(2, priority);
> create.execute();
>
> callDetails.put(callId, priority);
> }
> catch (SQLException e) {
> throw new AghException(e);
> }
> finally {
> conPool.returnConnection(con);
> }
> }
>
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