xxxxxxxxxx<html> <head> <meta charset="utf-8"> <META HTTP-EQUIV="pragma" CONTENT="no-cache"> <META HTTP-EQUIV="Cache-Control"CONTENT="no-cache, must-revalidate"> <META HTTP-EQUIV="expires"CONTENT="Wed, 26 Feb 1997 08:21:57 GMT"> <META HTTP-EQUIV="expires"CONTENT="0"> <title>编程狮(w3cschool.cn)</title> </head> <body> <p>网页不会被缓存 </p></body></html>