不用。scope="session"This value means that, in addition to being bound to a local variable, the bean will be stored in the HttpSession object associated with the current request, where it can be retrieved with getValue(in Servlet 2.1) or getAttribute(in Servlet 2.2)
variable, the bean will be stored in the HttpSession object
associated with the current request, where it can be retrieved
with getValue(in Servlet 2.1) or getAttribute(in Servlet 2.2)