python + sparql+ jena 实例

全数据查询：

from SPARQLWrapper import SPARQLWrapper, JSON

sparql = SPARQLWrapper("http://IP:PORT/test")
sparql.setQuery("""
    PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
    SELECT ?s ?p ?o
    WHERE {?s ?p ?o }
""")
sparql.setReturnFormat(JSON)
results = sparql.query().convert()

print(results)

固定三元组的第一个元素：

from SPARQLWrapper import SPARQLWrapper, JSON

sparql = SPARQLWrapper("http://IP:PORT/test")
sparql.setQuery("""
    PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
    SELECT  ?p ?o
    WHERE {<http://test.com/testKG/resource/7b54a2b0373e9205ad5131f213de267879cbb114> ?p ?o }
""")
sparql.setReturnFormat(JSON)
results = sparql.query().convert()

print(results)

下面这个注意?o要和FILTER里的?o名字一致

from SPARQLWrapper import SPARQLWrapper, JSON

sparql = SPARQLWrapper("http://10.100.208.195:3030/presale_test")
sparql.setQuery("""
    PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
    SELECT ?s ?p ?o
    WHERE {?s ?p ?o. FILTER (?o='match_str')}
""")
sparql.setReturnFormat(JSON)
results = sparql.query().convert()

print(results)