Solved

Clear Cache on JSP WEB PAGE

Posted on 2009-07-13
10
2,389 Views
Last Modified: 2012-05-07
Hi

I new to jsp and java but I need to know is there a way to my sure that when the user logout from the application that it clears the cache from the browser (FIREFox and IE). If there a script of meta tag to use that works 100%.

Also that values does not cache in my application. E.g. I have a link called Search Asset and i requires me to input a value e.g (NG123) and get my results. Now when I go to a second link called Transfer Asset and it populate the value automaticlly   (NG123). Is there a way on my jsp page to clear cache on every page
0
Comment
Question by:ablsysadmin
  • 5
  • 2
10 Comments
 
LVL 28

Expert Comment

by:strickdd
ID: 24840002
I don't know the Java code to do this exactly, but this is the C# code. It should just need to be converted. This will need to go on every page that you don't want cached.
System.Web.HttpContext.Current.Response.Cache.SetExpires(DateTime.Now.AddYears(-1));

System.Web.HttpContext.Current.Response.Cache.SetRevalidation(HttpCacheRevalidation.AllCaches);

System.Web.HttpContext.Current.Response.Cache.SetNoStore();

System.Web.HttpContext.Current.Response.Cache.SetNoServerCaching();

System.Web.HttpContext.Current.Response.Cache.SetCacheability(HttpCacheability.NoCache);

Open in new window

0
 

Author Comment

by:ablsysadmin
ID: 24842429
Hi Expert

I am still new to java and do not know much about c#. Could you assit with javascript or java.
0
 
LVL 28

Expert Comment

by:strickdd
ID: 24842667
0
 

Author Comment

by:ablsysadmin
ID: 24849236
Hi

I will have a look at it and provide you with feedback
0
IT, Stop Being Called Into Every Meeting

Highfive is so simple that setting up every meeting room takes just minutes and every employee will be able to start or join a call from any room with ease. Never be called into a meeting just to get it started again. This is how video conferencing should work!

 

Author Comment

by:ablsysadmin
ID: 24856764
Hi

I have placed tis in my LoginForm.jsp but when I log out and I want to log in back again I can still see that my username is cached
<%

//This is to disable caching

//There has to be a better way to do this

//See http://www.jguru.com/faq/view.jsp?EID=377&page=2 for details

response.setDateHeader("Expires", 0); //prevents caching at the proxy server

response.setHeader("Cache-Control", "private, no-store, no-cache,must-revalidate, max-stale=0"); //HTTP 1.1

response.addHeader("Cache-Control", "post-check=0, pre-check=0"); //IE Specific

response.setHeader("Pragma","no-cache"); //HTTP 1.0

%>

<%

   response.setHeader( "Pragma", "no-cache" );

   response.setHeader( "Cache-Control", "no-cache" );

   response.setDateHeader( "Expires", 0 );

   

%>

Open in new window

0
 

Author Comment

by:ablsysadmin
ID: 24866969
Hi

I have placed  the following below in my logout page and it cleans my cookies, but my probem is that when loggin into the application the value cache still happend. What I tried yesterday changing my bean from session to request and it give me error and I had to change it back. Is there some assistance to this please

<% request.getSession().invalidate(); %>

0
 
LVL 28

Accepted Solution

by:
Pravin Asar earned 125 total points
ID: 24916873
Simply add the cache control tags to your page[not to cache]

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<title>No Cache </title>

<META HTTP-EQUIV="CACHE-CONTROL" CONTENT="NO-CACHE">
<META HTTP-EQUIV="EXPIRES" CONTENT="01 Jan 1970 00:00:00 GMT">
<META HTTP-EQUIV="PRAGMA" CONTENT="NO-CACHE">

</head>
<body>

<% Hello!  The time is now <%= new java.util.Date() %>
</body>
</html>
0
 

Author Closing Comment

by:ablsysadmin
ID: 31602828
Excellent
0

Featured Post

How to run any project with ease

Manage projects of all sizes how you want. Great for personal to-do lists, project milestones, team priorities and launch plans.
- Combine task lists, docs, spreadsheets, and chat in one
- View and edit from mobile/offline
- Cut down on emails

Join & Write a Comment

Using Quotation Marks in PHP This question (http://www.experts-exchange.com/Web_Development/Web_Languages-Standards/PHP/Q_28217211.html) seems to come up a lot for developers who are new to PHP.  And it got me thinking, "How can we explain the rule…
New Relic: Our company recently started researching several products to figure out what were the best ways for us to increase our web page speed and to quickly identify performance problems that we may be having. One of the products we evaluated wa…
This video teaches viewers how to create their own website using cPanel and Wordpress. Tutorial walks users through how to set up their own domain name from tools like Domain Registrar, Hosting Account, and Wordpress. More specifically, the order in…
This video teaches users how to migrate an existing Wordpress website to a new domain.

758 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

22 Experts available now in Live!

Get 1:1 Help Now