Cache-Control ：private，no-cache、must-revalidate，max-age
Expires指定页面过期时间
response.setContentType("charset=UTF-8");
response.setHeader("Pragma", "No-cache");
response.setHeader("Cache-Control", "no-cache");
response.setDateHeader("Expires", 0);
原文：http://blog.csdn.net/jenya007/article/details/40654101