[OpenLayers-Users] openlayers,geoserver in external web app

[pierre de fermat]

It is slightly more complicated than that. For session related
exceptions, i need to show a dialogue box and redirect to login page.
For timeout errors, i can request a 'try again' message etc. There are
also lots of application logic related exceptions that I need to
handle.

Best
Pierre

On 12/28/12, Tue Topholm <tt at sugee.dk> wrote:
> Why not just return an image with the error in…..
> Den 28/12/2012 kl. 11.41 skrev pierre de fermat
> <fermatslittletheorem at gmail.com>:
>
>> Thanks Tue. I managed to redirect it and it works. However, this approach
>> cannot handle exceptions. When i fake the wms call, and if the struts
>> layer encounters an exception (session related, db timeout etc) , I just
>> end up with an empty image. I am not able to redirect such a request via
>> struts.xml or any other means. The proxy method would also face similar
>> issues.
>>
>> Any thoughts?
>>
>> Best
>> Pierre
>>
>>
>> On Thu, Dec 27, 2012 at 6:06 PM, Tue Topholm <tt at sugee.dk> wrote:
>> That is the "normal" way to do it....
>>
>> You also have the option to provide a proxy url that does exactly what you
>> want.
>>
>>
>> --
>>
>> Med venlig hilsen / Kind regards
>>
>> Tue Topholm
>> Sugee
>> Tlf: +45 32 13 32 32
>> W: http://www.sugee.dk
>>
>>
>> 2012/12/27 pierre de fermat <fermatslittletheorem at gmail.com>
>> Hi
>> I am creating a web app (dojo/struts/postgres/postgis) which amongst
>> other things, need to deliver GIS capabilities.
>>
>> The base infrastructure (security,logging,caching etc) is in place and
>> other modules are under development. I took up openlayers as my
>> frontend js for rendering maps from geoserver.
>>
>> For other modules, the request (ajax and regular) goes through my
>> struts filter layers -> action class->dao->db route. However,
>> openlayer requires configuration of wms services URL (provided by the
>> geoserver) . I can't direct those requests directly to geoserver. I
>> need my app to trap requests do bunch of validations and then process
>> it. I am sure any app developer would have gone through the same issue
>> that i am facing right now.
>>
>> i am thinking of 'tricking' openlayer by giving the URL of a struts
>> action which captures the parameters from the request URL, and then
>> requesting the geoserver internally for the response.This way i could
>> manage session, security etc and keep geoserver internally facing. Is
>> this recomendded? Is there a better way to make openlayer work with
>> external web app?
>>
>> Regards
>> Pierre
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>>
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