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From Alpay Ozturk <>
Subject Re: Default Charset in Content-Type Header
Date Thu, 22 Sep 2005 11:42:06 GMT
Thanks Jilles ,

I need to set the content-type of a servlet response as
"application/vnd.wap.mms-message". But I will recheck my code if I am
setting content-type to text/html before setting it to 
"application/vnd.wap.mms-message". If it does not work, I will wrap the
response as you suggested. Thanks for your response and suggestions. 



On Thu, 2005-09-22 at 14:08, Jilles van Gurp wrote:
> Alpay Ozturk wrote:
> > Hi,
> >
> > I am using Tomcat 4.1.29 in a production environment and I want   tomcat
> > not to add default charset in Content-Type response header.
> > Is it possible?
> >
> > Thanks in advance.
> >
> > Alpay 
> >
> >
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> >
> >   
> No, it's not possible for text/* types. Tomcat will set a default 
> charset if you don't set it yourself. For jsps you can change the 
> default encoding by overriding it in your web.xml (see conf/web.xml for 
> the defaults).
> BTW I suspect you might be wanting this because you are trying to set 
> the content type twice: first to text/html (tomcat will set a charset 
> automatically because the servlet spec says text/html should be 
> accompanied by a charset) and then to application/pdf (you end up with 
> content-type: application-pdf; charset=utf-8). We ran into this issue 
> before: you can't get rid of the charset once it is set and you need to 
> set a content-type before you start streaming content.
> The only thing you might be able to do is to filter the http header with 
> apache or something. Trying to correct this from a servlet filter is 
> tricky because the headers are streamed to the client before the 
> content. The only way to work around this is to wrap the response and 
> buffer the output, set the header in the real response and the stream 
> the buffered content (tomcat will still set a default charset if the 
> type is text/*).
> The best solution is to simply accept that the charset needs to be set 
> correctly for text/* and to do that yourself.
> Jilles
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