[Geoserver-users] GetFeatureInfo POST request with JSON data

Hello, I’m trying to implement a GetFeatureInfo request using HTTP POST with the data in JSON format.

Instead of doing something like:

$http.get(‘http://geoserver/GetFeatureInfo&service=WMS&version=1.1.1&BBOX=-9.268684387207031%2C38.697769425719144%2C-9.048957824707031%2C38.78580303175891&width=2560&height=1315&query_layers=Pingo+Doce%2CTarget+ACP&layers=Pingo+Doce%2CTarget+ACP&info_format=application%2Fjson&feature_count=50&x=1476&y=579&cql_filter=(1%3D1)%3B(whatever+%3E+100)’);

I want to be doing a POST request as such:

$http.post(url,

{

request: ‘GetFeatureInfo’,

service: ‘WMS’,

version: ‘1.1.1’,

BBOX: bbox,

width: width,

height: height,

query_layers: layersString,

layers: layersString,

info_format: ‘application/json’,

feature_count: ‘50’,

x: x,

y: y,

cql_filter: filtersString

},

{“headers” : { “Content-Type” : “application/json; charset=UTF-8” }

});

However, it appears that GeoServer is expecting a XML input or something, the response I get is:

ows:ExceptionTextorg.xmlpull.v1.XmlPullParserException: only whitespace content allowed before start tag and not - (position: START_DOCUMENT seen -… @1:1)

only whitespace content allowed before start tag and not - (position: START_DOCUMENT seen -… @1:1) </ows:ExceptionText>

</ows:Exception>

Is it not possible to make a POST request with JSON data? L

Thanks in advance and sorry if I wasn’t very clear.

Cosme Benito

On Fri, Dec 19, 2014 at 1:53 PM, Cosme Benito <cosme.benito@anonymised.com>
wrote:

Hello, I’m trying to implement a GetFeatureInfo request using HTTP POST
with the data in JSON format.

Instead of doing something like:

$http.get(‘http://geoserver/
GetFeatureInfo&service=WMS&version=1.1.1&BBOX=-9.268684387207031%2C38.697769425719144%2C-9.048957824707031%2C38.78580303175891&width=2560&height=1315&query_layers=Pingo+Doce%2CTarget+ACP&layers=Pingo+Doce%2CTarget+ACP&info_format=application%2Fjson&feature_count=50&x=1476&y=579&cql_filter=(1%3D1)%3B(whatever+%3E+100)
’);

I want to be doing a POST request as such:

$http.post(url,

{

request: 'GetFeatureInfo',

            service: 'WMS',

            version: '1.1.1',

            BBOX: bbox,

            width: width,

            height: height,

            query_layers: layersString,

            layers: layersString,

            info_format: 'application/json',

            feature_count: '50',

            x: x,

            y: y,

            cql_filter: filtersString

},

{"headers" : { "Content-Type" : "application/json; charset=UTF-8" }

});

However, it appears that GeoServer is expecting a XML input or something,
the response I get is:

<ows:ExceptionText>org.xmlpull.v1.XmlPullParserException: only whitespace
content allowed before start tag and not - (position: START_DOCUMENT seen
-... @1:1)

only whitespace content allowed before start tag and not - (position:
START_DOCUMENT seen -... @1:1) </ows:ExceptionText>

</ows:Exception>

Is it not possible to make a POST request with JSON data? L

No, it's not possible, GetFeatureInfo is only defined as a GET request.
As an out of WMS standard addition, you can do a form POST with the same
parameters as the GET request.

There is no support for either XML or JSON (well, posting JSON is not
supported by any OGC protocol at all).

Cheers
Andrea

--

GeoServer Professional Services from the experts! Visit
http://goo.gl/NWWaa2 for more information.

Please, notice that GeoSolutions will be closed for seasonal holidays
from December the 24th to January the 6th

Ing. Andrea Aime
@geowolf
Technical Lead

GeoSolutions S.A.S.
Via Poggio alle Viti 1187
55054 Massarosa (LU)
Italy
phone: +39 0584 962313
fax: +39 0584 1660272
mob: +39 339 8844549

http://www.geo-solutions.it
http://twitter.com/geosolutions_it

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the attention and use of the named addressee(s) and may be confidential or
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I didn’t realize about the WMS POST capability. Is that in the docs? I guess this would be useful for including very long requests (e.g. long filter expressions) ?

···

On Fri, Dec 19, 2014 at 5:49 AM, Andrea Aime <andrea.aime@anonymised.com> wrote:


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On Fri, Dec 19, 2014 at 1:53 PM, Cosme Benito <cosme.benito@anonymised.com> wrote:

Hello, I’m trying to implement a GetFeatureInfo request using HTTP POST with the data in JSON format.

Instead of doing something like:

$http.get(‘http://geoserver/GetFeatureInfo&service=WMS&version=1.1.1&BBOX=-9.268684387207031%2C38.697769425719144%2C-9.048957824707031%2C38.78580303175891&width=2560&height=1315&query_layers=Pingo+Doce%2CTarget+ACP&layers=Pingo+Doce%2CTarget+ACP&info_format=application%2Fjson&feature_count=50&x=1476&y=579&cql_filter=(1%3D1)%3B(whatever+%3E+100)’);

I want to be doing a POST request as such:

$http.post(url,

{

request: ‘GetFeatureInfo’,

service: ‘WMS’,

version: ‘1.1.1’,

BBOX: bbox,

width: width,

height: height,

query_layers: layersString,

layers: layersString,

info_format: ‘application/json’,

feature_count: ‘50’,

x: x,

y: y,

cql_filter: filtersString

},

{“headers” : { “Content-Type” : “application/json; charset=UTF-8” }

});

However, it appears that GeoServer is expecting a XML input or something, the response I get is:

ows:ExceptionTextorg.xmlpull.v1.XmlPullParserException: only whitespace content allowed before start tag and not - (position: START_DOCUMENT seen -… @1:1)

only whitespace content allowed before start tag and not - (position: START_DOCUMENT seen -… @1:1) </ows:ExceptionText>

</ows:Exception>

Is it not possible to make a POST request with JSON data? L

No, it’s not possible, GetFeatureInfo is only defined as a GET request.
As an out of WMS standard addition, you can do a form POST with the same parameters as the GET request.

There is no support for either XML or JSON (well, posting JSON is not supported by any OGC protocol at all).

Cheers
Andrea

==

GeoServer Professional Services from the experts! Visit
http://goo.gl/NWWaa2 for more information.

Please, notice that GeoSolutions will be closed for seasonal holidays
from December the 24th to January the 6th

==

Ing. Andrea Aime

@geowolf
Technical Lead

GeoSolutions S.A.S.
Via Poggio alle Viti 1187
55054 Massarosa (LU)
Italy
phone: +39 0584 962313
fax: +39 0584 1660272
mob: +39 339 8844549

http://www.geo-solutions.it
http://twitter.com/geosolutions_it

AVVERTENZE AI SENSI DEL D.Lgs. 196/2003

Le informazioni contenute in questo messaggio di posta elettronica e/o nel/i file/s allegato/i sono da considerarsi strettamente riservate. Il loro utilizzo è consentito esclusivamente al destinatario del messaggio, per le finalità indicate nel messaggio stesso. Qualora riceviate questo messaggio senza esserne il destinatario, Vi preghiamo cortesemente di darcene notizia via e-mail e di procedere alla distruzione del messaggio stesso, cancellandolo dal Vostro sistema. Conservare il messaggio stesso, divulgarlo anche in parte, distribuirlo ad altri soggetti, copiarlo, od utilizzarlo per finalità diverse, costituisce comportamento contrario ai principi dettati dal D.Lgs. 196/2003.

The information in this message and/or attachments, is intended solely for the attention and use of the named addressee(s) and may be confidential or proprietary in nature or covered by the provisions of privacy act (Legislative Decree June, 30 2003, no.196 - Italy’s New Data Protection Code).Any use not in accord with its purpose, any disclosure, reproduction, copying, distribution, or either dissemination, either whole or partial, is strictly forbidden except previous formal approval of the named addressee(s). If you are not the intended recipient, please contact immediately the sender by telephone, fax or e-mail and delete the information in this message that has been received in error. The sender does not give any warranty or accept liability as the content, accuracy or completeness of sent messages and accepts no responsibility for changes made after they were sent or for other risks which arise as a result of e-mail transmission, viruses, etc.