How do you mimic the 'a href' functionality in Struts?
Hi,
I have the following link in my JSP page:
td width=130a href=/servlets/blotter/Contact?page=viewcontactlist
target=rightframe class=linkboldContact List/a/td
I want to mimic the above using Struts JSP tags(I don't want to use a SUBMIT button).
However, I want to call my ActionForm class instead of the servlet and I would like to
set the value of the param 'page' to 'viewcontactlist' for my ActionForm class so that
my Action class can use it.
Is it possible to do this?
Here is my ActionForm implementation:
import javax.servlet.http.HttpServletRequest;
import org.apache.strus.action.*;
public final class ContactForm extends ActionForm {
// page parameter from the CDS menu
private String pageName =null;
public String getPageName(){
return (this.pageName);
}
public void setPageName(String pageName){
this.pageName = pageName;
}
}
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RE: How do you mimic the 'a href' functionality in Struts?
-Original Message-
From: Mehran Zonouzi [mailto:[EMAIL PROTECTED]
Sent: Tuesday, September 09, 2003 8:24 AM
To: Struts Users Mailing List
Subject: How do you mimic the 'a href' functionality in Struts?
td width=130a
href=/servlets/blotter/Contact?page=viewcontactlist
target=rightframe class=linkboldContact List/a/td
I want to mimic the above using Struts JSP tags(I don't want
to use a SUBMIT button). However, I want to call my
ActionForm class instead of the servlet and I would like to
set the value of the param 'page' to 'viewcontactlist' for my
ActionForm class so that my Action class can use it.
Is it possible to do this?
Yes.
Your href attribute can point to a JavaScript function that sets some hidden form
variables then submits the form. It would look something like this:
script type=text/javascript
function submitFunctionForYou(lType) {
document.yerForm.elements[page].value = lType;
}
/script
td
html:form action=/yerAction
html:hidden property=page /
/html:form
a href=submitFunctionForYou('viewcontactlist'); return true;Contact
List/a
/td
-= J
-
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Re: How do you mimic the 'a href' functionality in Struts?
In general, you use the html:link tag
http://jakarta.apache.org/struts/userGuide/struts-html.html#link
For the destination of the link, it takes one of four attributes:
forward, action, href, or page.
The mechanism for specifying a single parameter for the link uses
these attributes: paramId, paramName, paramProperty, paramScope
The value of paramId is the request parameter name. In your HTML
sample, then, this would be page, although in your ActionForm, this
would probably be pageName. (You probably want those to be
consistent with each other.)
You can specify the value for the parameter with the appropriate
combination of paramName, paramProperty, and paramScope, with
semantics analogous to name, property, and scope in the various
bean tags.
If you need to specify multiple parameters, this is done with a map
whose keys are parameter names and whose values are the values to be
put in the URL. See the docs for more details.
However, I'm guessing from your example link that you'd pass the same
parameter in the link every time -- that is, you'd always want the
text Contact List linked to the same URL. In this case, the better
Struts way to do it would be to define different action mappings
for each of the various parameters you would pass. This leaves you a
lot of future flexibility about how the functionality is provided.
If necessary, you could write a separate Struts Action class for each
mapping, or you could use one action for several mappings and use an
action mapping parameter to dispatch execution to a
parameter-specific method inside the action.
Hope this helps.
Joe
At 14:23 +0100 9/9/03, Mehran Zonouzi wrote:
Hi,
I have the following link in my JSP page:
td width=130a
href=/servlets/blotter/Contact?page=viewcontactlist
target=rightframe class=linkboldContact List/a/td
I want to mimic the above using Struts JSP tags(I don't want to use
a SUBMIT button). However, I want to call my ActionForm class
instead of the servlet and I would like to set the value of the
param 'page' to 'viewcontactlist' for my ActionForm class so that my
Action class can use it.
Is it possible to do this?
Here is my ActionForm implementation:
import javax.servlet.http.HttpServletRequest;
import org.apache.strus.action.*;
public final class ContactForm extends ActionForm {
// page parameter from the CDS menu
private String pageName =null;
public String getPageName(){
return (this.pageName);
}
public void setPageName(String pageName){
this.pageName = pageName;
}
}
--
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If you are not the intended recipient (or have received this e-mail
in error) please notify the sender immediately and destroy this
e-mail. Any unauthorized copying, disclosure or distribution of the
material in this e-mail is strictly forbidden.
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--
--
Joe Germuska
[EMAIL PROTECTED]
http://blog.germuska.com
If nature worked that way, the universe would crash all the time.
--Jaron Lanier
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Re: How do you mimic the 'a href' functionality in Struts?
Yes I am going to pass the same param to the link every time.
This is what I have replaced the link with.
I am not too sure if I should be using the href
property to call my ActionForm class.
html:link href=ContactForm paramId=page paramName=viewcontactlist
Joe Germuska
[EMAIL PROTECTED]To: Struts Users Mailing List
[EMAIL PROTECTED]
cc:
Subject: Re: How do you mimic the 'a
href' functionality in Struts?
09/09/03 14:47
Please respond to
Struts Users
Mailing List
In general, you use the html:link tag
http://jakarta.apache.org/struts/userGuide/struts-html.html#link
For the destination of the link, it takes one of four attributes:
forward, action, href, or page.
The mechanism for specifying a single parameter for the link uses
these attributes: paramId, paramName, paramProperty, paramScope
The value of paramId is the request parameter name. In your HTML
sample, then, this would be page, although in your ActionForm, this
would probably be pageName. (You probably want those to be
consistent with each other.)
You can specify the value for the parameter with the appropriate
combination of paramName, paramProperty, and paramScope, with
semantics analogous to name, property, and scope in the various
bean tags.
If you need to specify multiple parameters, this is done with a map
whose keys are parameter names and whose values are the values to be
put in the URL. See the docs for more details.
However, I'm guessing from your example link that you'd pass the same
parameter in the link every time -- that is, you'd always want the
text Contact List linked to the same URL. In this case, the better
Struts way to do it would be to define different action mappings
for each of the various parameters you would pass. This leaves you a
lot of future flexibility about how the functionality is provided.
If necessary, you could write a separate Struts Action class for each
mapping, or you could use one action for several mappings and use an
action mapping parameter to dispatch execution to a
parameter-specific method inside the action.
Hope this helps.
Joe
At 14:23 +0100 9/9/03, Mehran Zonouzi wrote:
Hi,
I have the following link in my JSP page:
td width=130a
href=/servlets/blotter/Contact?page=viewcontactlist
target=rightframe class=linkboldContact List/a/td
I want to mimic the above using Struts JSP tags(I don't want to use
a SUBMIT button). However, I want to call my ActionForm class
instead of the servlet and I would like to set the value of the
param 'page' to 'viewcontactlist' for my ActionForm class so that my
Action class can use it.
Is it possible to do this?
Here is my ActionForm implementation:
import javax.servlet.http.HttpServletRequest;
import org.apache.strus.action.*;
public final class ContactForm extends ActionForm {
// page parameter from the CDS menu
private String pageName =null;
public String getPageName(){
}
public void setPageName(String pageName){
}
}
--
This e-mail may contain confidential and/or privileged information.
If you are not the intended recipient (or have received this e-mail
in error) please notify the sender immediately and destroy this
e-mail. Any unauthorized copying, disclosure or distribution of the
material in this e-mail is strictly forbidden.
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To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
--
--
Joe Germuska
[EMAIL PROTECTED]
http://blog.germuska.com
If nature worked that way, the universe would crash all the time.
--Jaron Lanier
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To unsubscribe, e
Re: How do you mimic the 'a href' functionality in Struts?
At 15:03 +0100 9/9/03, Mehran Zonouzi wrote: Yes I am going to pass the same param to the link every time. This is what I have replaced the link with. I am not too sure if I should be using the href property to call my ActionForm class. html:link href=ContactForm paramId=page paramName=viewcontactlist At first encounter, the distinctions between the various link destination attributes can be a little confusing -- but you probably don't want to use href in this case. If you have a specific action mapping called /ContactForm then you should use 'action=/ContactForm' You would generally only want to use href when you were linking outside of your web application -- the other three provide dynamic URL rewriting to prepend the application context path so that you can deploy the same web app under different context paths without having to change your JSPs... (Other tags like html:img provide similar rewriting...) The below is copied from the docs for this tag: The base URL for this hyperlink is calculated based on which of the following attributes you specify (you must specify exactly one of them): * forward - Use the value of this attribute as the name of a global ActionForward to be looked up, and use the application-relative or context-relative URI found there. * action - Use the value of this attribute as the name of a Action to be looked up, and use the application-relative or context-relative URI found there. * href - Use the value of this attribute unchanged. * page - Use the value of this attribute as a application-relative URI, and generate a server-relative URI by including the context path and application prefix. Joe -- -- Joe Germuska [EMAIL PROTECTED] http://blog.germuska.com If nature worked that way, the universe would crash all the time. --Jaron Lanier - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: How do you mimic the 'a href' functionality in Struts?
Does the name I use for action i.e ContactForm have to tie in with what I use in the struts-config.xml file? html:link action=/ContactForm paramId=page paramName=viewcontactlist paramScope=request i.e. Do I need to put ContactForm instead of 'contacts' for path... action path=/contacts type=com.db.gcp.lemweb.blotter.servlets.ContactAction name=contactForm input=/viewcontactlist.jsp scope=request /action Joe Germuska [EMAIL PROTECTED]To: Struts Users Mailing List [EMAIL PROTECTED] cc: Subject: Re: How do you mimic the 'a href' functionality in Struts? 09/09/03 17:53 Please respond to Struts Users Mailing List At 15:03 +0100 9/9/03, Mehran Zonouzi wrote: Yes I am going to pass the same param to the link every time. This is what I have replaced the link with. I am not too sure if I should be using the href property to call my ActionForm class. html:link href=ContactForm paramId=page paramName=viewcontactlist At first encounter, the distinctions between the various link destination attributes can be a little confusing -- but you probably don't want to use href in this case. If you have a specific action mapping called /ContactForm then you should use 'action=/ContactForm' You would generally only want to use href when you were linking outside of your web application -- the other three provide dynamic URL rewriting to prepend the application context path so that you can deploy the same web app under different context paths without having to change your JSPs... (Other tags like html:img provide similar rewriting...) The below is copied from the docs for this tag: The base URL for this hyperlink is calculated based on which of the following attributes you specify (you must specify exactly one of them): * forward - Use the value of this attribute as the name of a global ActionForward to be looked up, and use the application-relative or context-relative URI found there. * action - Use the value of this attribute as the name of a Action to be looked up, and use the application-relative or context-relative URI found there. * href - Use the value of this attribute unchanged. * page - Use the value of this attribute as a application-relative URI, and generate a server-relative URI by including the context path and application prefix. Joe -- -- Joe Germuska [EMAIL PROTECTED] http://blog.germuska.com If nature worked that way, the universe would crash all the time. --Jaron Lanier - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] -- This e-mail may contain confidential and/or privileged information. If you are not the intended recipient (or have received this e-mail in error) please notify the sender immediately and destroy this e-mail. Any unauthorized copying, disclosure or distribution of the material in this e-mail is strictly forbidden. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: How do you mimic the 'a href' functionality in Struts?
i.e. Do I need to put ContactForm instead of 'contacts' for path... action path=/contacts type=com.db.gcp.lemweb.blotter.servlets.ContactAction name=contactForm input=/viewcontactlist.jsp scope=request /action No, contacts is the URL that the browser asks for to invoke your ContactAction class. ContactForm is the FormBean (explicitly defined elsewhere in the struts-config.xml file) that will be passed to the ContactAction class. Therefore, ContactForm should be the form bean used by the form in viewcontactlist.jsp. -- Tim Slattery [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: How do you mimic the 'a href' functionality in Struts?
The action attribute of the html:link tag and the path attribute of the action element should be identical. Note that the value of the paramName attribute (viewcontactlist in your example) is not a string literal, but rather the name of a bean in some scope (page, request, session, or application) which will be looked up and converted to a string as the value of the parameter. In your case, since you specify paramScope=request, the tag will specifically call request.getAttribute(viewcontactlist) to get the value. Joe At 18:02 +0100 9/9/03, Mehran Zonouzi wrote: Does the name I use for action i.e ContactForm have to tie in with what I use in the struts-config.xml file? html:link action=/ContactForm paramId=page paramName=viewcontactlist paramScope=request i.e. Do I need to put ContactForm instead of 'contacts' for path... action path=/contacts type=com.db.gcp.lemweb.blotter.servlets.ContactAction name=contactForm input=/viewcontactlist.jsp scope=request /action -- -- Joe Germuska [EMAIL PROTECTED] http://blog.germuska.com If nature worked that way, the universe would crash all the time. --Jaron Lanier - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
