Is there any way at the moment using JSP 1.0 to circumvent the known problem of
redirecting a page (via forward) after some use of the JspWriter is performed. I've
tried to circumvent this problem by doing the following..I've tried placing all my
non-JpsWriter invoked code on top, then do a page forward <jsp:forward
page="MyJsp.jsp" />. I've also looked at the .java generated which shows no invocation
of the jspwriter except it's instantiation, there was not out.print before the forward
call...in both cases, however, I get the error: "cannot forward page when getWriter()
already invoked."
Description:
The basic flow and interaction of the jsp & beans is such:
- jsp1 is initially invoked by another jsp page (jsp0), and (jsp1) renders the html.
- jsp1 includes another jsp page called jsp2.
- jsp2 has a submit field which allows posting to jsp1 which will allow jsp1 to first
do some necessary non-html processing via a bean, then optionally render the html
again or forward to another page. jsp1 sees the post and does some processing via the
bean; depending on a bean property either it continues on in the same page and renders
the html, or forwards to another page.
- at the very top (before any html) jsp1 checks for the bean property value. If the
property is a certain value, it does the page forward. Here's a snippet of jsp1
starting at the very top the page:
Snippet:
<jsp:useBean id="MyBean" class="com.niku.nitc.frontworks.Class1" scope="session"/><%
try
{
MyBean.handleRecordRequest (request, response);
}
catch(NITCException e)
{
throw new ServletException ("Error occured", e);
}
if ( MyBean.recordActionMode() != "recordRefresh" )
{
%>
<jsp:forward page="Jsp3.jsp" />
<%
}
%>
//later....
<%@ include file="Jsp2.jsp"%>
Any help on the above would be greatly appreciated.
Regards,
Manny Sarte
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