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From "Andrew Chapman" <>
Subject RE: tomcat always generates charset in Content-Type http header
Date Tue, 06 May 2003 11:24:20 GMT

Using the response.setContentType() function instead of the <@page
contentType...> tag and adding an ";" to the end, like this:


results in the following headers on TC 4.1.24:

HTTP/1.1 200 OK 
Content-Type: text/html;
Date: Tue, 06 May 2003 11:18:15 GMT 
Server: Apache Tomcat/4.1 (HTTP/1.1 Connector) 
Transfer-Encoding: chunked

If your client is tolerant of the ";" on the end of the content-type
this should work.


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-----Original Message-----
From: Roberto Nunnari [] 
Sent: 06 May 2003 11:20
Subject: tomcat always generates charset in Content-Type http header

Hi there.

I'm sorry if you consider this post as noise.. but as I already posted
twice to the user list without any useful answer, I decided I'd give a
try here.

I'm using tomcat 4.1.12 to serve kind of xml pages to an application.
I'm using jsp. I use <%@page contentType="text/xml"%> to set the right
content type for the client application in the jsp page.

The problem is that tomcat automatically sets the charset in the http
header with a default value of iso-8859-1 even though I don't specify a
charset in the above page directive.. just as if I had included the
following directive: <%@page contentType="text/xml; charset=iso-8859-1"

That's very sensible if the client is a web broser,
but the interested client gets very upset with it.. it simply doesn't
want to receive the charset header. The error message the client gives

Content-Type should be "text/xml" and not "text/xml; charset=ISO-8859-1"

So.. my problem is not that I want a different encoding.. I know how to
do that.. My problem is that I want tomcat -NOT set- the charset in the
http header.

Can any kind soul help me out with a way to have tomcat not to set the
charset header? ..and that should be specific to a web application..
letting the other webapplications behave as usual.. the ideal would be
by using a directive in the .jsp page..

I would also like to know if that behaviour is specified by a standard
to which tomcat conforms to... what does the http RFC sais about that?
does the protocol requires that the server sets that header in any case?

Thanks and best regards.
               Roberto Nunnari -software engineer-
  Scuola Universitaria Professionale della Svizzera Italiana
            Dipartimento di Informatica e Elettronica
  Via Cantonale                        tel: +41-91-6108561
  6928 Manno                 """       fax: +41-91-6108570
  Switzerland               (o o)

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