Paul,
>Hello all!
>
>We're using JSP1.0 under JWS2.0beta2.
>
>We've been trying to get "page forwarding" working. Specifically, to get
>one JSP page to simply forward over to another JSP page without doing a
>round-trip to the client browser.
>
>The simplest JSP file I've come up with for this is a 2-liner that says:
><%@ page language="java" %>
><jsp:request forward="http://hostname/.../other.jsp" />
>
>When I hit the page, after the "recompile delay" I get:
>
>Error during JSP page parsing
>Unknown exception: java.lang.IllegalStateException: Can not forward to
>servlet jspServlet : OutputStream or writer has been obtained
>
>...At first, I thought this was because of the stuff above the redirect
>being sent as HTML, but I've eliminated almost everything!
>
>So, What am I missing?
I ran into the same problem, and believe there is a bug in the
way JWS generates the servlet from the JSP. If you take a look
at the code generated from:
test.jsp
========
<jsp:request forward="/mod1.jsp" />
in $JWS/tmpdir/default/pagecompile/jsp/_test.java,
you'll see something like the following:
package pagecompile.jsp;
import javax.servlet.*;
import javax.servlet.http.*;
...
public class _test extends HttpJspBase {
public void _jspService(HttpServletRequest request, HttpServletResponse
response)
throws IOException, ServletException {
HttpSession session = null;
ServletContext application;
ServletConfig config;
JspWriter out = null;
String _value = null;
try {
application = getServletConfig().getServletContext();
config = getServletConfig();
session = request.getSession(true);
out = new JspWriter(response.getWriter(), 8192);
response.setContentType("text/html");
out.write("");
application.getRequestDispatcher("/mod1.jsp").forward(request,
response);
out.write("\r\n");
} catch (Throwable t) {
throw new JspException("Unknown exception: "+t);
} finally {
}
out.flush();
As you can see, a JspWriter is created, and the empty string is output
before it forwards the request. Since the servlet API spec says you
can't do that, I don't see how this can work. Maybe there is some
option for suppressing the JspWriter creation?
>Thanks in advance for your guidance!
>-Paul Reiber
>
-- Bill
--
Bill O'Keefe [EMAIL PROTECTED]
Open Market, Inc. http://www.openmarket.com/
One Wayside Road TEL: 781.359.7296
Burlington, MA 01803 FAX: 781.359.8200
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