2014-02-27 17:24 GMT+01:00 Konstantin Kolinko <knst.koli...@gmail.com>:
> 2014-02-27 18:31 GMT+04:00 Jose María Zaragoza <demablo...@gmail.com>:
>>
>> And what do you recommend to me for forcing to return a Content-Type ?
>> Some weird clients require it
>>
>> If I cannot do it with a Filter , where can I do it ?
>>
>
> You can do it in a Filter.
>
> As I said,
> 1. The header must be set before writing anything to the output
> stream. That is per HTTP/1.1 protocol.
> 2. The header must have correct value.
>
> How to implement that is up to you (do not expect me to teach you java
> programming, but maybe others here will do).
>
> If you do not know the length before response is generated, a solution
> can be to buffer the response before writing it out.
>
> Buffering can be done by writing an adapter around servlet response
> that replaces default output stream with a buffered one. The adapter
> can be implemented by extending
> javax.servlet.http.HttpServletResponseWrapper class. Some caching
> frameworks have filters that perform such buffering and caching.
Thanks.
Finally, I did it with a servlet and it works
I tried with a Filter and a HttpServletResponseWrapper. Long time
before asking here.
And I wrapped the response output stream into a FilterOutputStream ,
so I could count every byte written
I got the right content length . All OK and I was happy.
But , when I tried set the header with
wrapper.setHeader("Content-Length", count ) , and as you told me
before, the response headers had already been flushed ( i checked
isCommited() )
I could modify output stream data but I couldn't modify response
headers. I don't understand but it is
Regards
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