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Re: [jetty-users] Error handling of ServletException
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Once you flush the writer the response is committed to the client.
A committed response also results in the HTTP response header being sent.
A response is of the following format ...
HTTP Status Code + Status Message + HTTP Version
HTTP Response Headers
HTTP Response Data
In your flush example, you are forcing the HTTP Status Code line and the HTTP response headers to be sent just so that some of your data can be flushed.
If you throw an exception after it is committed it is too late to send an error response header. (Such as a 3xx, 4xx or 5xx codes)
- Joakim
On Mon, May 10, 2010 at 1:31 PM, Tony Thompson
<Tony.Thompson@xxxxxxxxxxxxxx> wrote:
I have a
simple servlet that generates some HTML output, flushes
response.getWriter() (response is committed) and then throws a
ServletException to simulate an error. In this situation, Jetty 7.1
seems to eat the exception and never goes into error handling. So, in
the browser, I get the HTML before the exception and it just stops. If
I don't flush the PrintWriter, error handling works as expected.
In Jetty 5, I would get the HTML before the exception and the exception
all in the same page. Sometimes it would be ugly but, at least I still
got the error back. What is the correct way of handling a situation
like this? I prefer to get the exception back in the browser. Can
this be configured somewhere?
Thanks
Tony
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