[OpenLayers-Users] json respose to a wms get feature info
Imran Rajjad
rajjad at gmail.com
Tue Jun 8 09:15:35 EDT 2010
HI.
well the template thing is kinda new to me, I will see to it. I was
wondering if i could do it the old school way but for that I need to
trigger functions at the start and end of selection box created by
mouse drag. because before using openlayers I was simple taking two
points which were set at the start and end of my draging of selection
rectangle. Eventualy I would have two points which I would append to a
wfs url and simple call JSON response through traditional javascript
syntax. But here in open layers things are quit difficult Anyway I
will look into this template thing, might do the job for me. thanks
regards,
Imran
On Tue, Jun 8, 2010 at 6:09 PM, Hugo <hfpmartins at gmail.com> wrote:
> Hello again,
>
> as you can see in your request the output format of your request is
> INFO_FORMAT=text%2Fhtml. To get the info in json format you just need to
> make a template which will return text/html but formatted in the JSON way.
> You'll need to put this template in the folder of your layer inside data_dir
> folder of geoserver. After that, you'll have your response in JSON.
> This is my experience and i don't know if you have another way of achieving
> what you are trying to achieve. I've been working with Geoserver 1.7.6 and
> so i really don't know if more recent release have other options to do this.
>
> Cheers,
> Hugo
>
> On Tue, Jun 8, 2010 at 1:59 PM, Imran Rajjad <rajjad at gmail.com> wrote:
>>
>> Hi,
>>
>> thanks for your reply, actually I had the json response working with
>> geoserver in my previous client , which did not use any API , since
>> now I`m using Openlayers. I made this wmsgetfeatureInfo object. Fire
>> Bug shows a url like
>>
>>
>> http://10.0.80.41:7004/geoserver/wms?SERVICE=WMS&VERSION=1.1.1&REQUEST=GetFeatureInfo&LAYERS=topp%3Anetworkcoverage&QUERY_LAYERS=topp%3Anetworkcoverage&STYLES=&BBOX=72.96062%2C33.634027%2C73.097949%2C33.737024&FEATURE_COUNT=10&HEIGHT=600&WIDTH=800&FORMAT=image%2Fgif&INFO_FORMAT=text%2Fhtml&SRS=EPSG%3A4326&X=130&Y=208
>>
>> when i copy paste this url seperately in a browser I get the response.
>> I have gone through the docs. There is no example on how to query a
>> wms layer with Json response. Do I need to specify some function in
>> wmsgetfeatureinfo where the response should be received. However I
>> will check this links, thanks a lot
>>
>> regards,
>> Imran
>>
>> On Tue, Jun 8, 2010 at 5:54 PM, Hugo <hfpmartins at gmail.com> wrote:
>> > Hello Imran,
>> >
>> > The problem you are facing has nothing to do with openlayers, it is
>> > though
>> > related with geoserver. I'm not sure if current releases of geoserver
>> > already present the json output format but you can always program a
>> > template
>> > to return your results in json format. Check the following sites and if
>> > you
>> > have further questions i think you'll have better chances of getting an
>> > answer to this problem in the geoserver list.
>> >
>> > http://geoserver.org/display/GEOSDOC/GetFeatureInfo+templates
>> > http://geoserver.org/display/GEOSDOC/Freemarker+templates
>> >
>> > http://docs.geoserver.org/stable/en/user/googleearth/tutorials/kmlplacemark/index.html
>> > http://freemarker.sourceforge.net/docs/index.html
>> >
>> > Hope this can help.
>> > Cheers,
>> >
>> > Hugo Martins
>> >
>> > On Tue, Jun 8, 2010 at 1:42 PM, Imran Rajjad <rajjad at gmail.com> wrote:
>> >>
>> >> firebug is showing the following request parameters
>> >>
>> >> BBOX 72.925254,33.54194,73.199912,33.747933
>> >> FEATURE_COUNT 10
>> >> FORMAT image/gif
>> >> HEIGHT 600
>> >> INFO_FORMAT text/html
>> >> LAYERS topp:networkcoverage
>> >> QUERY_LAYERS topp:networkcoverage
>> >> REQUEST GetFeatureInfo
>> >> SERVICE WMS
>> >> SRS EPSG:4326
>> >> STYLES
>> >> VERSION 1.1.1
>> >> WIDTH 800
>> >> X 690
>> >> Y 295
>> >>
>> >> On Tue, Jun 8, 2010 at 5:18 PM, Imran Rajjad <rajjad at gmail.com> wrote:
>> >> > Hi ,
>> >> >
>> >> > my WMSGetFeatureInfo control is not returning any json,, my code is
>> >> > as
>> >> > below
>> >> >
>> >> > basicControl = {
>> >> > click : new OpenLayers.Control.WMSGetFeatureInfo({
>> >> > url: 'http://10.0.80.41:7004/geoserver/wms',
>> >> > title: 'Identify features by clicking',
>> >> > layers: [network_wms],
>> >> > queryVisible: true,
>> >> > vendorParams: {
>> >> > version: "1.1.1",
>> >> > info_format: "text/plain",
>> >> > },
>> >> > format : new OpenLayers.Format.GeoJSON()})
>> >> > };
>> >> >
>> >> >
>> >> > basicControl.click.events.register("getfeatureinfo",
>> >> > this, showInfo);
>> >> > map.addControl(basicControl.click);
>> >> >
>> >> > function showInfo(evt) {
>> >> > alert(evt); //
>> >> > }
>> >> >
>> >> >
>> >> > when I check in FireBug. the request is sent but there is no
>> >> > responseTexT, what am i doing wrong here
>> >> >
>> >> > regards,
>> >> > Imran
>> >> >
>> >> >
>> >> > On Tue, Jun 8, 2010 at 1:20 PM, Imran Rajjad <rajjad at gmail.com>
>> >> > wrote:
>> >> >> Hi,
>> >> >>
>> >> >> I`m trying to create a box selection that selects features from a
>> >> >> wms
>> >> >> overlay , I need the response to be in JSON and I also want to
>> >> >> append
>> >> >> my cql filter to this request.
>> >> >>
>> >> >> Can anyone point me to the documentation closer to this task?
>> >> >>
>> >> >> regarsd,
>> >> >> Imran
>> >> >>
>> >> >> --
>> >> >> I.R
>> >> >>
>> >> >
>> >> >
>> >> >
>> >> > --
>> >> > I.R
>> >> >
>> >>
>> >>
>> >>
>> >> --
>> >> I.R
>> >> _______________________________________________
>> >> Users mailing list
>> >> Users at openlayers.org
>> >> http://openlayers.org/mailman/listinfo/users
>> >
>> >
>> >
>> > --
>> > Hugo Martins
>> > FMV-UTL
>> > CIISA-Epidemiologia e Saúde Pública Veterinária
>> > Av. da Universidade Técnica
>> > 1300-477 Lisboa
>> > N 38°42'49.54", W 9°11'43.42"
>> >
>>
>>
>>
>> --
>> I.R
>
>
>
> --
> Hugo Martins
> FMV-UTL
> CIISA-Epidemiologia e Saúde Pública Veterinária
> Av. da Universidade Técnica
> 1300-477 Lisboa
> N 38°42'49.54", W 9°11'43.42"
>
--
I.R
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