Jsp Page Refresh

[krussi rong]

how to refresh a example.jsp page when
use <a href="example.jsp?param1=a"> point to
example.jsp. thanks.

[Arun Boraiah]

The solution to your problem is
1)If you want to refresh the page for every regular interval of time use the html tag given below in your jsp
<META http-equiv="REFRESH" content="60">
here for every 60 sec the page refreshed
2)Else use browser refresh button, when ever you want to refresh.
-arun
[ January 30, 2002: Message edited by: arun boraiah ]

[Gabriel Fox]

Hello Guys,I am lost.
Why would U want to refresh a web-page repeatedly
after a said period, apart from if user for
instance makes a mistake while filling a form and needs to reset the form fields.Please,shed some
light on this.Cheers.

[Arun Boraiah]

HI Gabriel,
Auto refresh is required when the data displayed in the page varies with time.
example : On developing a live score card of some match say cricket match.
share price list. etc,
-arun
[ January 30, 2002: Message edited by: arun boraiah ]

[Tim Holloway]

Auto refresh is also useful when the user has kicked off a background process that can't be completed before the browser times out. In this case, you keep feeding auto-refresh pages ("please wait") to the user until the actual output is ready to be displayed.

[krussi rong]

Thanks everybody!
It seems I solved this problem.I just need everytime when someone clike the link the page
will be refresh.
I added
<meta http-equiv="Cache-Control" content="no-cache" forua="true"/>
<meta http-equiv="pragma" content="no-cache">
but the first line didn't work, when I added
the second line it worked. I don't know why.

[Steven Kors]

in servlets i use the following.
THis refers to HTTP version 1.0
response.setHeader("Pragma", "no-cache"); // HTTP 1.0
This refers to HTTP version 1.1
response.setHeader("Cache-Control", "no-cache"); // HTTP 1.1
Sooo if you make the leap...
THis refers to HTTP version 1.0
<meta http-equiv="pragma" content="no-cache">
THis refers to HTTP version 1.1
<meta http-equiv="Cache-Control" content="no-cache" forua="true"/>
I hope that helps you.

WIth reguard to setting a page refresh, i was wondering the following...
<%
//Refresh the page every 30 seconds automatically.
response.setHeader("Refresh","30");
%>
Why not use Java script?
[ January 31, 2002: Message edited by: Mercenary_Steel ]

[Madhav Lakkapragada]

"Mercenary_Steel"
Your name doesn't agree with the javaranch guidelines. Please take a moment and re-register after reviewing the guidelines at http://www.javaranch.com/name.jsp
thanks for your cooperation.
- satya

[Steven Kors]

Testing

[krussi rong]

Thanks Steven K very much.
I dont know how to do that with a javasript.
and I also have a problem write a jsp page to
download file. It always open the file directly.
Thanks

[Marilyn de Queiroz]

krussi,

Your name doesn't agree with the javaranch guidelines. Please take a moment and re-register after reviewing the guidelines at http://www.javaranch.com/name.jsp. We would like you to be able to continue to post here at JavaRanch.com
[ February 01, 2002: Message edited by: Marilyn deQueiroz ]

[Steven Kors]

Krussi,
If you want your page to refresh after set periods just put this into your JSP page.
<%
//Refresh the page every 30 seconds automatically.
response.setHeader("Refresh","30");
%>

With respect to cache control, i have not set thisin a JSP page before since i only put statice code in my JSP pages. I set these in my servlets;
response.setHeader("Pragma", "no-cache"); // HTTP 1.0
response.setHeader("Cache-Control", "no-cache"); // HTTP 1.1
I turn of caching if i am creating dynamic output and i dont want the Browser to pull from the local hardrive.
[ February 01, 2002: Message edited by: Steven K ]