Value passed with request.setAttribute() is not available by request.getParameter()

by

You’re calling request.getParameter() instead of request.getAttribute() to obtain the value. Since you’ve set it as request attribute, you should also get it as request attribute.

So:

request.setAttribute("foo", foo);

is only available by

Object foo = request.getAttribute("foo"); // NOT getParameter().

The getParameter() is only for HTTP request parameters as you can specify in request URL or in input fields of HTML forms.

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