Re: NEWBIE: How to pass parameters between JSPs
Hi Adam
Glad it worked out.
The ActionForm is the "Struts way" of interacting with HTML forms. It is a
kkey concept of the Struts framework.
So, what basically happens here is that an Action CAN be tied to a FormBean,
and the FormBean serves as a "layer" between your HTML form and the action.
So, all your action has to do, is to inspect the attributes of the FormBean
to get to the data the user entered in the HTML form.
The trick here is naming of html tags as you already figured out.
I don't know what others on this list do, but as a rule of thumb I always
use the constellation:
JSP->FormBean->Action
When polulating the jsp, you can also use the very same FormBean, to set up
defaults, fill lists, whatever. It works in both directions.
JSP->FormBean and
FormBean->JSP
HTH
Henrik
- Original Message -
From: "Adam Lipscombe" <[EMAIL PROTECTED]>
To: "'Struts Users Mailing List'" <[EMAIL PROTECTED]>
Sent: Thursday, September 30, 2004 3:37 PM
Subject: RE: NEWBIE: How to pass parameters between JSPs
Hi Henrik
Yes that's it. I tried what you suggest and it works. Many thanks.
What I was trying to avoid was storing the params in the LoginForm
actionform. It seems like this approach uses the LoginForm ActionForm as a
forwarding mechanism for params passed into Login.jsp.
What I tried was this:
In Login.jsp itself I stored the params in the request instance via
setAttribute(). If I later try to fish them out in the Login action they are
not available - because the request instance has changed. I did not use the
ActionForm to pass them from Login.jsp to Login Action.
Is using the ActionForm like you suggest the normal way to handle this
situation? (i.e. "passing through" params).
TIA - Adam
-Original Message-
From: HG [mailto:[EMAIL PROTECTED]
Sent: 30 September 2004 14:14
To: Struts Users Mailing List
Subject: Re: NEWBIE: How to pass parameters between JSPs
Hi Adam
I might be overwhelmed by the lack of sleep, but... I can simply don't get
it.. So please confirm'
1 ) You have a login.jsp and a LoginAction
2) When the submit button (or whatever) is pressed on the rendered (by
login.jsp) HTML page, LoginAction is called.
3) In LoginAction, you can get to the value of the fields (in login.jsp),
through the attached FormBean (say LoginForm) instance.
4) You can take these values and store them as attributes on the request and
forward (NOT redirect) to another action/jsp.
5) In the action/jsp you get these attributes again from the request
Is the problem that you are using redirect?? It can be set up in the
struts-config.xml
Regards
Henrik
- Original Message -
From: "Adam Lipscombe" <[EMAIL PROTECTED]>
To: "'Struts Users Mailing List'" <[EMAIL PROTECTED]>
Sent: Thursday, September 30, 2004 2:01 PM
Subject: RE: NEWBIE: How to pass parameters between JSPs
Folks
Thanks for your replies
I tried using request.setAttribute(), but the HttpServletRequest instance
changes between Login.jsp and the login action. The instance that Login.jsp
stores the params in is not the same instance that is passed into the login
action. Hence he params are not present in the login action.
The param I want to pass is a Map of name/value pairs.
Maybe the standard solution is to just put it in the session?
TIA -Adam
-----Original Message-
From: HG [mailto:[EMAIL PROTECTED]
Sent: 30 September 2004 12:32
To: Struts Users Mailing List
Subject: Re: NEWBIE: How to pass parameters between JSPs
Hi Andy
A session variable can be "expensive". Why not just put it on the request by
using "request.setAttribute" in one action and getting it again using
"request.getAttribute" in another action?
What is your "parameter"? A simple type, object, graph of objects?
- Original Message -
From: "andy wix" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, September 30, 2004 1:03 PM
Subject: NEWBIE: How to pass parameters between JSPs
> Hi,
>
> It's probably better to store them in the session rather then passing
> from page to page. In Login action:
>
> HttpSession session = request.getSession();
> session.setAttribute("YourParams", params);
>
> and get them in the next page:
>
> YourClass xxx =
> (YourClass)session.getAttribute("YourParams");
>
> regards,
> Andy
>
> _
> Express yourself with cool new emoticons
http://www.msn.co.uk/specials/myemo
>
>
> -
> To unsubscribe, e-mail: [EMAIL PROTECTED]
> For additional commands, e-mail: [EMAIL PROTECTED]
>
--
RE: NEWBIE: How to pass parameters between JSPs
Hi Henrik
Yes that's it. I tried what you suggest and it works. Many thanks.
What I was trying to avoid was storing the params in the LoginForm
actionform. It seems like this approach uses the LoginForm ActionForm as a
forwarding mechanism for params passed into Login.jsp.
What I tried was this:
In Login.jsp itself I stored the params in the request instance via
setAttribute(). If I later try to fish them out in the Login action they are
not available - because the request instance has changed. I did not use the
ActionForm to pass them from Login.jsp to Login Action.
Is using the ActionForm like you suggest the normal way to handle this
situation? (i.e. "passing through" params).
TIA - Adam
-Original Message-
From: HG [mailto:[EMAIL PROTECTED]
Sent: 30 September 2004 14:14
To: Struts Users Mailing List
Subject: Re: NEWBIE: How to pass parameters between JSPs
Hi Adam
I might be overwhelmed by the lack of sleep, but... I can simply don't get
it.. So please confirm'
1 ) You have a login.jsp and a LoginAction
2) When the submit button (or whatever) is pressed on the rendered (by
login.jsp) HTML page, LoginAction is called.
3) In LoginAction, you can get to the value of the fields (in login.jsp),
through the attached FormBean (say LoginForm) instance.
4) You can take these values and store them as attributes on the request and
forward (NOT redirect) to another action/jsp.
5) In the action/jsp you get these attributes again from the request
Is the problem that you are using redirect?? It can be set up in the
struts-config.xml
Regards
Henrik
- Original Message -
From: "Adam Lipscombe" <[EMAIL PROTECTED]>
To: "'Struts Users Mailing List'" <[EMAIL PROTECTED]>
Sent: Thursday, September 30, 2004 2:01 PM
Subject: RE: NEWBIE: How to pass parameters between JSPs
Folks
Thanks for your replies
I tried using request.setAttribute(), but the HttpServletRequest instance
changes between Login.jsp and the login action. The instance that Login.jsp
stores the params in is not the same instance that is passed into the login
action. Hence he params are not present in the login action.
The param I want to pass is a Map of name/value pairs.
Maybe the standard solution is to just put it in the session?
TIA -Adam
-Original Message-
From: HG [mailto:[EMAIL PROTECTED]
Sent: 30 September 2004 12:32
To: Struts Users Mailing List
Subject: Re: NEWBIE: How to pass parameters between JSPs
Hi Andy
A session variable can be "expensive". Why not just put it on the request by
using "request.setAttribute" in one action and getting it again using
"request.getAttribute" in another action?
What is your "parameter"? A simple type, object, graph of objects?
- Original Message -
From: "andy wix" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, September 30, 2004 1:03 PM
Subject: NEWBIE: How to pass parameters between JSPs
> Hi,
>
> It's probably better to store them in the session rather then passing
> from page to page. In Login action:
>
> HttpSession session = request.getSession();
> session.setAttribute("YourParams", params);
>
> and get them in the next page:
>
> YourClass xxx =
> (YourClass)session.getAttribute("YourParams");
>
> regards,
> Andy
>
> _
> Express yourself with cool new emoticons
http://www.msn.co.uk/specials/myemo
>
>
> -
> To unsubscribe, e-mail: [EMAIL PROTECTED]
> For additional commands, e-mail: [EMAIL PROTECTED]
>
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
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-
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Re: NEWBIE: How to pass parameters between JSPs
Hi Adam
I might be overwhelmed by the lack of sleep, but... I can simply don't get
it.. So please confirm'
1 ) You have a login.jsp and a LoginAction
2) When the submit button (or whatever) is pressed on the rendered (by
login.jsp) HTML page, LoginAction is called.
3) In LoginAction, you can get to the value of the fields (in login.jsp),
through the attached FormBean (say LoginForm) instance.
4) You can take these values and store them as attributes on the request and
forward (NOT redirect) to another action/jsp.
5) In the action/jsp you get these attributes again from the request
Is the problem that you are using redirect?? It can be set up in the
struts-config.xml
Regards
Henrik
- Original Message -
From: "Adam Lipscombe" <[EMAIL PROTECTED]>
To: "'Struts Users Mailing List'" <[EMAIL PROTECTED]>
Sent: Thursday, September 30, 2004 2:01 PM
Subject: RE: NEWBIE: How to pass parameters between JSPs
Folks
Thanks for your replies
I tried using request.setAttribute(), but the HttpServletRequest instance
changes between Login.jsp and the login action. The instance that Login.jsp
stores the params in is not the same instance that is passed into the login
action. Hence he params are not present in the login action.
The param I want to pass is a Map of name/value pairs.
Maybe the standard solution is to just put it in the session?
TIA -Adam
-Original Message-
From: HG [mailto:[EMAIL PROTECTED]
Sent: 30 September 2004 12:32
To: Struts Users Mailing List
Subject: Re: NEWBIE: How to pass parameters between JSPs
Hi Andy
A session variable can be "expensive". Why not just put it on the request by
using "request.setAttribute" in one action and getting it again using
"request.getAttribute" in another action?
What is your "parameter"? A simple type, object, graph of objects?
- Original Message -
From: "andy wix" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, September 30, 2004 1:03 PM
Subject: NEWBIE: How to pass parameters between JSPs
> Hi,
>
> It's probably better to store them in the session rather then passing
> from page to page. In Login action:
>
> HttpSession session = request.getSession();
> session.setAttribute("YourParams", params);
>
> and get them in the next page:
>
> YourClass xxx =
> (YourClass)session.getAttribute("YourParams");
>
> regards,
> Andy
>
> _
> Express yourself with cool new emoticons
http://www.msn.co.uk/specials/myemo
>
>
> -
> To unsubscribe, e-mail: [EMAIL PROTECTED]
> For additional commands, e-mail: [EMAIL PROTECTED]
>
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
RE: NEWBIE: How to pass parameters between JSPs
Folks
Thanks for your replies
I tried using request.setAttribute(), but the HttpServletRequest instance
changes between Login.jsp and the login action. The instance that Login.jsp
stores the params in is not the same instance that is passed into the login
action. Hence he params are not present in the login action.
The param I want to pass is a Map of name/value pairs.
Maybe the standard solution is to just put it in the session?
TIA -Adam
-Original Message-
From: HG [mailto:[EMAIL PROTECTED]
Sent: 30 September 2004 12:32
To: Struts Users Mailing List
Subject: Re: NEWBIE: How to pass parameters between JSPs
Hi Andy
A session variable can be "expensive". Why not just put it on the request by
using "request.setAttribute" in one action and getting it again using
"request.getAttribute" in another action?
What is your "parameter"? A simple type, object, graph of objects?
- Original Message -
From: "andy wix" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, September 30, 2004 1:03 PM
Subject: NEWBIE: How to pass parameters between JSPs
> Hi,
>
> It's probably better to store them in the session rather then passing
> from page to page. In Login action:
>
> HttpSession session = request.getSession();
> session.setAttribute("YourParams", params);
>
> and get them in the next page:
>
> YourClass xxx =
> (YourClass)session.getAttribute("YourParams");
>
> regards,
> Andy
>
> _
> Express yourself with cool new emoticons
http://www.msn.co.uk/specials/myemo
>
>
> -
> To unsubscribe, e-mail: [EMAIL PROTECTED]
> For additional commands, e-mail: [EMAIL PROTECTED]
>
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
Re: NEWBIE: How to pass parameters between JSPs
Forget my previous post. Was answering an answer... :-) Might need some
sleep.. :-)
- Original Message -
From: "andy wix" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, September 30, 2004 1:03 PM
Subject: NEWBIE: How to pass parameters between JSPs
> Hi,
>
> It's probably better to store them in the session rather then passing from
> page to page.
> In Login action:
>
> HttpSession session = request.getSession();
> session.setAttribute("YourParams", params);
>
> and get them in the next page:
>
> YourClass xxx = (YourClass)session.getAttribute("YourParams");
>
> regards,
> Andy
>
> _
> Express yourself with cool new emoticons
http://www.msn.co.uk/specials/myemo
>
>
> -
> To unsubscribe, e-mail: [EMAIL PROTECTED]
> For additional commands, e-mail: [EMAIL PROTECTED]
>
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
Re: NEWBIE: How to pass parameters between JSPs
Hi Andy
A session variable can be "expensive". Why not just put it on the request by
using "request.setAttribute" in one action and getting it again using
"request.getAttribute" in another action?
What is your "parameter"? A simple type, object, graph of objects?
- Original Message -
From: "andy wix" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, September 30, 2004 1:03 PM
Subject: NEWBIE: How to pass parameters between JSPs
> Hi,
>
> It's probably better to store them in the session rather then passing from
> page to page.
> In Login action:
>
> HttpSession session = request.getSession();
> session.setAttribute("YourParams", params);
>
> and get them in the next page:
>
> YourClass xxx = (YourClass)session.getAttribute("YourParams");
>
> regards,
> Andy
>
> _
> Express yourself with cool new emoticons
http://www.msn.co.uk/specials/myemo
>
>
> -
> To unsubscribe, e-mail: [EMAIL PROTECTED]
> For additional commands, e-mail: [EMAIL PROTECTED]
>
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
