page 作用域指出这项设置只适用于当前页，而request 作用域将它应用于请求期间访问的所有JSP页面。
The page scope indicates that the setting is only applicable over the current page, while the request scope applies it to all JSP pages accessed during a request.
page 作用域指出这项设置只适用于当前页，而request 作用域将它应用于请求期间访问的所有JSP页面。
The page scope indicates that the setting is only applicable over the current page, while the request scope applies it to all JSP pages accessed during a request.
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