Anyone know how to modify or remove the value of an attribute that has been
set by calling request.setAttribute( attributeName, value )?
Calling request.setAttribute(attributeName, value) with a different value
causes an IllegalStateException.
Calling request.setAttribute(attributeName, null) causes a
NullPointerException.
HttpSession has a removeValue() method, ServletContext has a
removeAttribute() method yet ServletRequest doesnt seem to have a similar
method.
Am I missing something or is there a hole in the servlet API?
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