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Getting Parameters from URL or Request Part II [message #31247]

Wed, 06 June 2007 08:12

Markus rüger

Messages: 369
Registered: July 2009

Senior Member

Hello,

it has already been talked about that you can access parameters of the RAP
URL through ContextProvider.getRequest().getParameterMap().
I am now facing the problem, that I do not get my correct parameters of the
URL that was called originally if I use
ContextProvider.getRequest().getParameterMap() somewhere later in my
application since RAP changes the parameters for the request. I already
tried to
read the parameters in the activator as the plugin starts, but then I get a
"Context is not available...."-Exception. Then I thought that maybe I can
read the parameters initially in
the createUI method of the entry point, but that is too late.

Is there a way to get the original parameters out of the URL somehow?

My url looks like: http://localhost/rap?var1=value1&var2=value2 .

Thanks in advance,

Markus

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Re: Getting Parameters from URL or Request Part II [message #31283 is a reply to message #31247]

Wed, 06 June 2007 09:04

Eclipse User

Originally posted by: fappel.innoopract.com

Hi Markus,

RAP doesn't change the request parameters. It only buffers the the
parameters in case of a additional browser-detection-request, so that they
don't get lost for the application programmer. But with the index-template
mechanism normally this request isn't send anymore - so you should get the
original request object.

Reading the request-values in the createUI-method works for us. If you want
to process the request-parameters earlier you should use a phaselistener
(before PrepareUIRoot). That's the earliest point where you could enter the
lifecycle.

The following codesnippet for the example URL
http://localhost/rap?var1=value1&var2=value2 ...

HttpServletRequest request = ContextProvider.getRequest();
Enumeration parameterNames = request.getParameterNames();
while( parameterNames.hasMoreElements() ) {
String key = ( String )parameterNames.nextElement();
System.out.println( key + ": " + request.getParameter( key ) );
}

....produces the following console log:
w4t_survey: true
w4t_width: 782
nocache: 1181120323906
w1.bounds.width: 782
w4t_height: 861
var1: value1
var2: value2
uiRoot: w1
requestCounter: 0
w4t_startup: default
w4t_scriptEnabled: true
w4t_ajaxEnabled: true
w1.bounds.height: 861

So if you get different parameters the problem must be s.th. else. But
actually we don't use the getParameterMap() we use getParameter() - maybe
there is a problem with that.

Ciao
Frank

"Markus Kr

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Re: Getting Parameters from URL or Request Part II [message #31313 is a reply to message #31283]

Wed, 06 June 2007 09:22

Markus rüger

Messages: 369
Registered: July 2009

Senior Member

Thanks Frank. You were right. The getParameterMap() method returns string
arrays as values instead of simple strings. That caused the error in my
application.

Regards,

Markus

"Frank Appel" <fappel@innoopract.com> schrieb im Newsbeitrag
news:f45tb0$dur$1@build.eclipse.org...
> Hi Markus,
>
> RAP doesn't change the request parameters. It only buffers the the
> parameters in case of a additional browser-detection-request, so that they
> don't get lost for the application programmer. But with the index-template
> mechanism normally this request isn't send anymore - so you should get the
> original request object.
>
> Reading the request-values in the createUI-method works for us. If you
> want to process the request-parameters earlier you should use a
> phaselistener (before PrepareUIRoot). That's the earliest point where you
> could enter the lifecycle.
>
> The following codesnippet for the example URL
> http://localhost/rap?var1=value1&var2=value2 ...
>
> HttpServletRequest request = ContextProvider.getRequest();
> Enumeration parameterNames = request.getParameterNames();
> while( parameterNames.hasMoreElements() ) {
> String key = ( String )parameterNames.nextElement();
> System.out.println( key + ": " + request.getParameter( key ) );
> }
>
> ...produces the following console log:
> w4t_survey: true
> w4t_width: 782
> nocache: 1181120323906
> w1.bounds.width: 782
> w4t_height: 861
> var1: value1
> var2: value2
> uiRoot: w1
> requestCounter: 0
> w4t_startup: default
> w4t_scriptEnabled: true
> w4t_ajaxEnabled: true
> w1.bounds.height: 861
>
> So if you get different parameters the problem must be s.th. else. But
> actually we don't use the getParameterMap() we use getParameter() - maybe
> there is a problem with that.
>
> Ciao
> Frank
>
> "Markus Kr

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