Re: [sparql-wrapper-devel] unable to get JSON returned from localhost Sesame server

[Carlos T. <car...@fu...>]

Dear Jeff,

I have done some test using some Sesame server repositories (2.4.0).
After that, I think that the problem could be the SPARQL endpoint
where you are asking.

Instead of

sparql = SPARQLWrapper("http://localhost:8080/openrdf-workbench/repositories/test")

try

sparql = SPARQLWrapper("http://localhost:8080/openrdf-sesame/repositories/test")

(the difference is "openrdf-workbench" vs "openrdf-sesame").

I hope this could help.

Best regards and thanks for using SPARQLWrapper,


Carlos Tejo Alonso
CTIC-Centro Tecnológico
Parque Científico y Tecnológico de Gijón
c/ Ada Byron, 39 Edificio Centros Tecnológicos
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Tel.: +34 984 29 12 12
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On 27 September 2012 22:39, Jeff Hoekman <ma...@gm...> wrote:
>
> Greetings sparql-wrapper developers,
>
> I'm attempting the most basic sparql-wrapper (1.5.2) select query against
> a Sesame server repository (2.6.9) and am
> unable to get JSON back.  I'm following the example code here:
> http://sparql-wrapper.sourceforge.net/.
>
> The response content-type is always application/xml.  Why isn't
> application/json or sparql-results+json returned?  Is
> this a bug in SPARQLWrapper otherwise what am I doing wrong?  Does
> SPARQLWrapper.setReturnFormat(JSON) not work with Sesame?
>
> Incidentally I do get the proper JSON response using CURL from the cmd
> line using the following:
> curl -g -H "Accept: application/sparql-results+json;charset=UTF-8"
>
> http://localhost:8080/openrdf-sesame/repositories/test?query=select%20*%20where%20{%20?s%20?p%20?o%20}%20limit%205
>
> Thanks, Jeff
>
>
> from SPARQLWrapper import SPARQLWrapper, JSON
> sparql =
> SPARQLWrapper("http://localhost:8080/openrdf-workbench/repositories/test")
> sparql.setReturnFormat(JSON)
> q = 'select * where { ?s ?p ?o } limit 5'
> sparql.setQuery(q)
> results = sparql.query().convert()
>
> # returns:
>
> /Users/Jeff/.virtualenvs/proto/lib/python2.7/site-packages/SPARQLWrapper/Wrapper.py:550:
> RuntimeWarning: unknown
> response content type, returning raw response...
>   warnings.warn("unknown response content type, returning raw
> response...", RuntimeWarning)
>
> print results.info()
>
> # returns:
> Server: Apache-Coyote/1.1
> Last-Modified: Thu, 27 Sep 2012 20:04:22 GMT
> Content-Type: application/xml;charset=UTF-8
> Content-Length: 925
> Date: Thu, 27 Sep 2012 20:15:30 GMT
> Connection: close
>
> results = sparql.query()
> print results.info()
>
> {'content-length': '925', 'server': 'Apache-Coyote/1.1', 'last-modified':
> 'Thu, 27 Sep 2012 20:04:22 GMT', 'connection':
> 'close', 'date': 'Thu, 27 Sep 2012 20:14:50 GMT', 'content-type':
> 'application/xml;charset=UTF-8'}
>
>
>
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