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From: Robert Klemme <shortcutter@googlemail.com>
Newsgroups: comp.lang.java.programmer
Subject: Re: Browser Back Button
Date: Sun, 22 Jan 2017 13:52:37 +0100
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On 21.01.2017 20:43, Davej wrote:
> On Wednesday, January 11, 2017 at 12:13:35 PM UTC-6, Robert Klemme wrot=
e:
>> On 11.01.2017 01:49, Arne Vajh=C3=B8j wrote:

>>> I would not like to run with a filter that barfs on redirects.
>>
>> Agree.  This is a typical use case for using a Filter.

> What about the practice of placing this at the top of a JSP?
>
> <%@page contentType=3D"text/html" pageEncoding=3D"UTF-8"%>
> <%@taglib prefix=3D"c" uri=3D"http://java.sun.com/jsp/jstl/core" %>
> <%
>     response.setHeader("Cache-Control", "no-cache, no-store, must-reval=
idate"); // HTTP 1.1.
>     response.setHeader("Pragma", "no-cache"); // HTTP 1.0.
>     response.setHeader("Expires", "0"); // Proxies.
> %>
> <!DOCTYPE html>
> [...etc...]
>

You do not want to have this type of functionality (detect that someone=20
is not logged in and redirect to the login page) in every JSP.

Cheers

	robert

--=20
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/