Scott Ferguson wrote (2010-11-12 18:01):
> Mattias Jiderhamn wrote:
>> Since upgrading to Resin 4.0.10 this error has turned up now and then in
>> our log files, however we have sofar been unable to reproduce it ourselves.
>> Could it be a Resin bug...?
>>
>> java.lang.IllegalStateException: getWriter() can't be called after 
>> getOutputStream().
>>      at 
>> com.caucho.server.http.HttpServletResponseImpl.getWriter(HttpServletResponseImpl.java:166)
>>      at 
>> com.caucho.server.http.ToCharResponseAdapter$ToCharResponseStreamWrapper.writeNext(ToCharResponseAdapter.java:140)
>>      at 
>> com.caucho.server.http.ToCharResponseStream.flushCharBuffer(ToCharResponseStream.java:389)
>>      at 
>> com.caucho.server.http.ToCharResponseStream.flushBuffer(ToCharResponseStream.java:338)
>>      at 
>> com.caucho.server.http.ResponseAdapter.finish(ResponseAdapter.java:344)
>>      at com.caucho.jsp.PageContextImpl.release(PageContextImpl.java:1444)
>>      at com.caucho.jsp.PageManager.freePageContext(PageManager.java:217)
>>      at 
>> _jsp._html._orders._invoices._invoiceStatisticsList__jsp._jspService(_invoiceStatisticsList__jsp.java:45)
>>           ...
>>
> I assume you're never calling getOutputStream() in any of the tags or
> included files?
If we were, we should be able to reproduce it and it would turn up a lot 
more often in production. We've only seen it logged six times in three 
weeks.

> That exception is required by the spec if you call getOutputStream()
> followed by getWriter().
Could it be related to flushing somehow?
Such as if an exception was thrown after flushing...?

</Mattias>

> I'm filing this as http://bugs.caucho.com/view.php?id=4290.
>
> -- Scott
>
>
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