I think that's expected behaviour: You can't set headers after the
response has been committed (more body data has been written to the
outputstream than the buffer size).
In the case of the 200 response code the call to
filterChain.doFilter(...) actually serves the content. Setting of the
header after this is too late.
Jon
[EMAIL PROTECTED] wrote:
Hello
I do some further analysis in this problem and got following result:
Precondition: The filter manipulates the HTTP header when returning a
static resource (e.g. image).
HTTP 200
In case of a HTTP 200 (OK) result the header is not added when the doFilter
method is like following:
....
filterChain.doFilter(request, response);
response.setHeader(name, value);
....
In contrast to it works when the code is like following:
....
response.setHeader(name, value);
filterChain.doFilter(request, response);
....
In other words: When returning a HTTP 200 (OK) I must set the header before
forwarding the request to the next filter.
HTTP 304
In this case it doesn't mention whether setting the header is before or
after forwarding the request.
Any comments?
Jürgen Dufner
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