[英]Redirect to login page automatically after some time
How can we redirect to login page automatically after some time? 一段时间后,我们如何自动重定向到登录页面?
I have a requirement to redirect to login page if the current page is idle for 10 minutes in Java/JSP. 如果当前页面在Java / JSP中空闲了10分钟,我需要重定向到登录页面。
I tried to use <meta http-equiv="refresh" content="120;url=./login.html">
tag. 我尝试使用<meta http-equiv="refresh" content="120;url=./login.html">
标记。 This works only when I click on any link but not automatically after 2 mins(120secs). 仅当我单击任何链接时此方法有效,但在2分钟(120秒)后自动无效。
Can anyone tell me how to redirect to login page automatically? 谁能告诉我如何自动重定向到登录页面?
Is it Java? 是Java吗? No... But you must use PHP or JavaScript 否...但是您必须使用PHP或JavaScript
JavaScript: JavaScript:
<script>
// setTimeout("window.location.href='login.html';",time);
//example:
setTimeout("window.location.href='login.html';",120); // after 2 minutes
</script>
Add this code in HTML.head (<html><head>...here...</head>...) 在HTML.head(<html> <head> ... here ... </ head> ...)中添加此代码
Using servlet, you can try this : 使用servlet,您可以尝试以下操作:
response.setHeader("Refresh","120;url=./login.html");
But I do not think that's what you want. 但是我认为这不是您想要的。 In fact, for your needs, you need more than just redirect, you need to : 实际上,对于您的需求,您不仅需要重定向,还需要:
As for invalidation from servlet : 至于来自servlet的无效 :
public LogoutServlet extends HttpServlet {
@Override
public void doGet(...) {
request.getSession().invalidate();
}
}
A code that I shamelessly copied from here , look into the thread, few good infos there. 我从这里毫不客气地复制了一个代码,调查了线程,那里的信息很少。
As for the session-timeout (check this ): 至于会话超时 (请检查此 ):
HttpSession session = request.getSession();
session.setMaxInactiveInterval(2*60);
Which you may combime with a : 您可以将其与组合:
response.sendRedirect("./login.html");
The other way of doing things is a filter, filtering is a technology that protects your ressources ; 另一种处理方式是过滤器, 过滤是一种保护资源的技术。 it's just a servlet of which you override the doFilter
methode. 它只是您覆盖其doFilter
方法的servlet。 So, inside that doFilter
, you can set the session-timeout and redirect, invalidate the session, etc. check this tuto , it does have a " Servlet and JSP Filters " section you could enjoy. 因此,在该doFilter
,您可以设置会话超时和重定向,使会话无效等。检查此tuto ,它确实具有您可以享受的“ Servlet和JSP筛选器 ”部分。
Best of luck. 祝你好运。
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