Thanks Pierre,
for sure i will use that info, but now i am not writing a server, as i wrote
earlier, i use tomcat to test a proxy.
i am interested to see how my proxy behave when i send it the data chunked
or zip the data. and i want this to be in reference to regular files.
so basically all i want is to use the default servlet to return static
content in one test and afterwards to return the same content but this time
it will be zip or use chunk to transfer the content.
i do not want to write servlets to each one of the behaviors, that i why i
thought that the idea of writing filter (by David) was good.
if i could do some kind of HttpServletResponseWrapper (as i saw in the j2ee
tutorial) it will be excellent.
Regards
Lior
On 7/4/07, Pierre Goupil <[EMAIL PROTECTED]> wrote:
Lior,
Basically, I think that you need to handle the response by yourself.
For instance, if you want to send an image :
***
RenderedImage rimg = ImageIO.read(new File(img));
OutputStream os = response.getOutputStream(); // <=== get the
response to be able to re-write it
ImageIO.write(rimg, "jpg", os);
os.close();
***
In my example I assumed that the MIME content-type was set to the relevant
value, since you said that your headers were OK. But anyway, here is my
stuff to do so :
***
response.setContentType("image/jpg");
***
But if you want to be able to send a file for the browser to download it,
or
to be able to send several different types of data all in one response,
you
need a multi-part response :
***
response.setHeader("Content-Disposition", "attachment;filename=\"test.doc\
"");
// <=== here
response.setContentType("text/doc");
out = response.getWriter();
out.print("what you wish");
response.setContentType("image/png");
out = response.getWriter();
out.print("what you wish too");
out.close();
***
Be aware that without a multi-part response, you can only set one
content-type. If you try and set it a second time, Tomcat will give you a
(beautiful) exception saying something like (can't remember exactly)
"content-type has already been set".
Here is a list of MIME-types, FYI :
http://plugindoc.mozdev.org/winmime.html
With this technique of multi-part response, you can for instance turn a
JSP
to a Word file : you set the response type to .doc and let Tomcat render
its
JSP compiled to HTML into it. Then the browser received a .doc file with
regular HTML into it, which word is able to read... et voilà !
Regards,
Pierre
2007/7/4, lior grinfeld <[EMAIL PROTECTED]>:
>
> you were right, 10X.
>
> now i am facing yet one more challenge.
> i made filter to overwrite the response, i added headers as i want and
it
> works fine.
> now i want to manipulate the content , to do zip or to chunk the data.
>
> i tried to do StreamResponseWrapper that extends
> HttpServletResponseWrapper, without success.
> any ideas on how to implement it?
>
> 10X
> Lior
>
>
> On 7/4/07, David Delbecq <[EMAIL PROTECTED]> wrote:
> >
> > Could it be you forgot to call filterChain.doFilter(request.response)
> > after adding your headers?
> >
> > En l'instant précis du 04/07/07 14:18, lior grinfeld s'exprimait en
ces
> > termes:
> > > Thanks for the tip, i used filters.
> > >
> > > now i facing other problem. if I use filter with request to static
> > > content (
> > > i did not write servlet for it , i want the defaultServlet to handle
> it)
> > > for some reason i do not get the content, it looks like the
> > > defaultServlet
> > > is doing nothing now, without filter it return the file i ask, with
> > > filter
> > > just the data the filter added.
> > > any ideas?
> > >
> > > 10X
> > > Lior
> > >
> > > On 7/4/07, David Delbecq <[EMAIL PROTECTED]> wrote:
> > >>
> > >> Either map to '/*' your custom servlet that returning the static
> > content
> > >> with your custom headers, either write a servletfilter that add
> > >> additional header before processing request.
> > >>
> > >> En l'instant précis du 04/07/07 09:52, lior grinfeld s'exprimait en
> ces
> > >> termes:
> > >> > Hi,
> > >> >
> > >> > i am new at using tomcat.
> > >> > I want to use tomcat as a server to test our proxy. to do that i
> > >> need to
> > >> > manipulate the response headers, i did that without problems
using
> > >> > servlets.
> > >> > now i want to manipulate the http response headers or content of
> > >> requests
> > >> > for static content.
> > >> > Ex. if i will do "GET myServer/somefile.txt" the tomcat will know
> to
> > >> > return
> > >> > the file and manipulate the response http headers as i want, or
to
> do
> > >> > zip or
> > >> > to do chunks on the content.
> > >> > is it possible and how? where can i configure tomcat to refer to
> the
> > >> > directory where all my files are stored?
> > >>
> > >>
> > >>
---------------------------------------------------------------------
> > >> To start a new topic, e-mail: users@tomcat.apache.org
> > >> To unsubscribe, e-mail: [EMAIL PROTECTED]
> > >> For additional commands, e-mail: [EMAIL PROTECTED]
> > >>
> > >>
> > >
> > >
> >
> >
> >
> > ---------------------------------------------------------------------
> > To start a new topic, e-mail: users@tomcat.apache.org
> > To unsubscribe, e-mail: [EMAIL PROTECTED]
> > For additional commands, e-mail: [EMAIL PROTECTED]
> >
> >
>
>
> --
>
> Regards
> Lior Grinfeld
>
--
"Mon horizon était désormais les pétales courbés,
Ma nouvelle demeure resplendissait de flèches d'herbes folles
Et d'oreillers de pollens odorants."
(Naïmah, le philosophe Fémereif)
--
Regards
Lior Grinfeld
