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     ASP： response.expires=0 response.addHeader("pragma","no-cache") response.addHeader("Cache-Control","no-store, must-revalidate") PHP： header("Expires: Mon, 26 Jul 1997 05:00:00 GMT"); header("Cache-Control: no-store, must-revalidate"); header("Pragma: no-cache"); JSP： response.addHeader("Cache-Control", "no-store, must-revalidate"); response.addHeader("Expires", "Thu, 01 Jan 1970 00:00:01 GMT");