Hi,
many thanks for advice: I have enabled this log and I see the information
that I attach. http://www.nabble.com/file/p20903814/committed.txt
committed.txt
The problem seem to be the row
"FINE: Response already committed "
but I don't understand why the response was committed...
I investigate on it.
Regards,
Marco
Rainer Jung-3 wrote:
>
> Hi Marco,
>
> marcobalc schrieb:
>> Hi,
>>
>> .ic is the extension mapped to the controllers of my spring webapp.
>>
>> The Excel is generated by a controller (servlet): this controller execute
>> this instructions
>>
>> response.setContentType("application/excel");
>> response.setHeader("Content-Disposition","attachment; filename=\""
>> nomeFileExcel "\"");
>> response.flushBuffer();
>
> I see. Do you have any errors in our log files (Tomcat/Webapp), e.g.
> about response already committed? It seems something either is sending
> the headers to the web server before the code sets those headers above,
> or they get reset after setting them. E.g. if the code under any
> condition calls flushBuffer() before setting those headers, the response
> will already be committed and you can't set the headers later on. Any
> call to getWriter() also makes it impossible to set headers later.
>
> If there are no error messages, you could try to check via isCommitted()
> before setting the headers to see, whether this assumption is true or not.
>
> You can also use register a ServletResponseWrapper in a filter to
> intercept the calls to the ServletResponse and to debug, why and when
> the response got committed prematurely (and also to see, whether your
> setContentType() got actually called.
>
>> For the Excel the problem is repetitive but also for other "normal" html
>> page (generated by jsp) the text/plain content/type was returned with
>> random
>> frequency.
>>
>> If on apache I add AddType *.ic text/html all the html page are ok but
>> the
>> excel are printed with binary format on the browser.
>>
>> So AddType is not the correct solution: I need that the content type is
>> the
>> content type returned by tomcat.
>
> Not sure, what that shows exactly, but you can set the log level of the
> connector components higher by adding
>
> org.apache.coyote.level = FINEST
> org.apache.jk.level = FINEST
> org.apache.tomcat.level = FINEST
>
> to conf/logging.properties.
>
> The log will then also contain messages like
>
> Dec 8, 2008 4:00:05 PM org.apache.jk.core.MsgContext action
> FINE: COMMIT
> Dec 8, 2008 4:00:05 PM org.apache.jk.common.JkInputStream appendHead
> FINE: COMMIT sending headers [EMAIL PROTECTED] ===
> MimeHeaders ===
> ETag = W/"16763-1201552728000"
> Last-Modified = Mon, 28 Jan 2008 20:38:48 GMT
>
> So you can see the headers sent out by Tomcat.
>
> Regards,
>
> Rainer
>
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