theme frontpage: getOutputStream() has already been called for this response

[Greg Huber <Gr...@ricoh.co.uk>]

Hello,

Now with the frontpage theme we keep seeing this error message in the log 
file. 

StandardWrapperValve:invoke - Servlet.service() for servlet jsp threw 
exception
java.lang.IllegalStateException: getOutputStream() has already been called 
for this response
        at 
org.apache.catalina.connector.Response.getWriter(Response.java:601)
        at 
org.apache.catalina.connector.ResponseFacade.getWriter(ResponseFacade.java:196)

Have traced it to the index.jsp:

RequestDispatcher homepage =
            request.getRequestDispatcher("/roller-ui/rendering/page/"
+frontpageBlog);
homepage.forward(request, response);


If the old redirect method is used this message goes away:

response.sendRedirect(request.getContextPath()+"/"+frontpageBlog);

Front page seems to work ok all the same.

Cheers Greg

Re: theme frontpage: getOutputStream() has already been called for this response

[Phillip Rhodes <mi...@cpphacker.co.uk>]

Greg Huber wrote:
> Hello,
> 
> If the old redirect method is used this message goes away:
> 
> response.sendRedirect(request.getContextPath()+"/"+frontpageBlog);
> 
> Front page seems to work ok all the same.

I don't have an answer, but I'm glad you mentioned this.  I was
experiencing a very similar problem, but it wasn't manifesting itself
until the Sitemesh filter tried to do a getWriter() on the response
and then it would blow up with an IllegalStateException.  I wouldn't
have thought to try changing that back to using sendRedirect if I hadn't 
seen this. At least it's a workaround, even if a little less elegant.

What's interesting though, is that I wasn't seeing my version of this 
problem, then I started fiddling with index.jsp, and I started seeing 
it.  But when I reverted my local index.jsp back to the "stock" version
the problem persisted until I made the change you mention above.

Weird stuff.  :-(


-- 
Phillip Rhodes
Chief Architect - OpenQabal
https://openqabal.dev.java.net
LinkedIn: http://www.linkedin.com/in/philliprhodes

Re: theme frontpage: getOutputStream() has already been called for this response

[Dave <sn...@gmail.com>]

On Feb 15, 2008 7:58 AM, Greg Huber <Gr...@ricoh.co.uk> wrote:
> Now with the frontpage theme we keep seeing this error message in the log
> file.
>
> StandardWrapperValve:invoke - Servlet.service() for servlet jsp threw
> exception
> java.lang.IllegalStateException: getOutputStream() has already been called
> for this response
>         at
> org.apache.catalina.connector.Response.getWriter(Response.java:601)
>         at
> org.apache.catalina.connector.ResponseFacade.getWriter(ResponseFacade.java:196)
>
> Have traced it to the index.jsp:
>
> RequestDispatcher homepage =
>             request.getRequestDispatcher("/roller-ui/rendering/page/"
> +frontpageBlog);
> homepage.forward(request, response);
>
>
> If the old redirect method is used this message goes away:
>
> response.sendRedirect(request.getContextPath()+"/"+frontpageBlog);
>
> Front page seems to work ok all the same.

Hmm... I wonder why I don't see that on Glassfish.

- Dave