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response.setHeader("Expires", "Sat, 6 May 1995 12:00:00 GMT");  
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response.setHeader("Cache-Control", "no-store,no-cache,must-revalidate");  
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response.addHeader("Cache-Control", "post-check=0, pre-check=0");  
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response.setHeader("Pragma", "no-cache");  
%> 
<%
// ½«¹ýÆÚÈÕÆÚÉèÖÃΪһ¸ö¹ýȥʱ¼ä
response.setHeader("Expires", "Sat, 6 May 1995 12:00:00 GMT");
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response.setHeader("Cache-Control", "no-store,no-cache,must-revalidate");
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response.addHeader("Cache-Control", "post-check=0, pre-check=0");
// ÉèÖñê×¼ HTTP/1.0 no-cache header.
response.setHeader("Pragma", "no-cache");
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