<%session.invalidate();%>
<script>self.location='/index.jsp';</script>

------解决方案--------------------
<%session.invalidate();%>
<meta http-equiv="refresh" content="3; url=index.jsp;">
三秒后自动转到登录界面

------解决方案--------------------

//清除缓存，使网页显示当前最新信息
response.setHeader("Pragma","No-cache");  
response.setHeader("Cache-Control","no-cache");  
response.setDateHeader("Expires", 0);  
session.invalidate();
response.sendRedirect("login.html");