关于清除session和页面缓存问题

//session清除
session.invalidate();	






//session检测 
	Users us = (Users) session.getAttribute("loginuser");
	if (null != us) {
		java.util.Hashtable htb = (java.util.Hashtable) application.getAttribute("MemberList");
		if(htb != null){
			String loginid = (String) htb.get(us.getLoginid());
			if (session.getId().equals(loginid)) {
				out.print("");
			} else {
				session.removeAttribute("loginuser");
				session.invalidate();
			}
		}
	}
//清除页面缓存，直接写页面上
	response.setHeader("Cache-Control","no-store");
	response.setHeader("Pragma","no-cache");
	response.setDateHeader ("Expires", 0);