Python：使用 RDFLIB 绘制 Sesame 数据库图形
是否可以使用 RDFLIB 绘制 Sesame RDF 数据库的图形？ 这是我尝试过的：
endpoint = "http://127.0.0.1:8080/openrdf-workbench/repositories/movies/explore?resource=%3Cfile%3A%2F%2Fmovies_export.rdf%3E"
from rdflib import Graph
g = Graph()
g.parse(endpoint)
这是错误：
Traceback (most recent call last):
File "C:\Software\rdflib\movieGraph.py", line 10, in <module>
g.parse(endpoint)
File "c:\python26_32bit\lib\site-packages\rdflib\graph.py", line 756, in parse
parser = plugin.get(format, Parser)()
File "c:\python26_32bit\lib\site-packages\rdflib\plugin.py", line 89, in get
raise PluginException("No plugin registered for (%s, %s)" % (name, kind))
rdflib.plugin.PluginException: No plugin registered for (application/xml, <class
'rdflib.parser.Parser'>)
我认为唯一的技巧是指定正确的 URL 以使 Sesame 返回 .rdf xml 布局。
问题作者：重新发布到 http://answers.semanticweb.com/questions/9414/python-using-rdflib-to-graph-a-sesame-database（参见那里的答案）
Is it possible to draw a graph of a Sesame RDF database using RDFLIB?
This is what I tried:
endpoint = "http://127.0.0.1:8080/openrdf-workbench/repositories/movies/explore?resource=%3Cfile%3A%2F%2Fmovies_export.rdf%3E"
from rdflib import Graph
g = Graph()
g.parse(endpoint)
This is the error:
Traceback (most recent call last):
File "C:\Software\rdflib\movieGraph.py", line 10, in <module>
g.parse(endpoint)
File "c:\python26_32bit\lib\site-packages\rdflib\graph.py", line 756, in parse
parser = plugin.get(format, Parser)()
File "c:\python26_32bit\lib\site-packages\rdflib\plugin.py", line 89, in get
raise PluginException("No plugin registered for (%s, %s)" % (name, kind))
rdflib.plugin.PluginException: No plugin registered for (application/xml, <class
'rdflib.parser.Parser'>)
I think the only trick is specifying a proper URL to cause Sesame to return a .rdf xml layout.
Author of question: reposted to http://answers.semanticweb.com/questions/9414/python-using-rdflib-to-graph-a-sesame-database (see answer there)
如果你对这篇内容有疑问，欢迎到本站社区发帖提问 参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。
绑定邮箱获取回复消息
由于您还没有绑定你的真实邮箱，如果其他用户或者作者回复了您的评论，将不能在第一时间通知您！
发布评论
评论（1）
您的端点 URL 错误。它指向 Sesame Workbench，它不是 (SPARQL) 端点，而是客户端应用程序。任何 Sesame 数据库的 SPARQL 端点始终位于 Sesame 服务器上，并且等于存储库 URL。就您而言，可能是
http://127.0.0.1:8080/openrdf-sesame/repositories/movies。看看您正在做的事情，我认为您不需要 SPARQL 端点，而只是想要导出完整的 Sesame 数据库。为此，您可以使用
http://127.0.0.1:8080/openrdf-sesame/repositories/movies/statements。有关更多详细信息，请参阅 Sesame HTTP 通信协议。（答案是从我自己在另一个网站上的答案复制的，为了完整性而发布在此处）
Your endpoint URL is wrong. It points to the Sesame Workbench, which is not a (SPARQL) endpoint, but a client application. The SPARQL endpoint for any Sesame database is always on the Sesame server, and is equal to the repository URL. In your case, probably
http://127.0.0.1:8080/openrdf-sesame/repositories/movies.Looking at what you're doing, I think you do not need a SPARQL endpoint but just want an export of the complete Sesame database. For this, you can use
http://127.0.0.1:8080/openrdf-sesame/repositories/movies/statements. See the Sesame HTTP communication protocol for more details.(answer copied from my own answer on another site, posted here for completeness)