有朋友用过RDF来实现访问控制的吗？谢谢了

不过本体也不是灵丹妙药，不是所有的领域都能很好的应用（应该是说很多领域都不适合使用目前的本体技术），你需要看看别人做的工作，

A Role and Attribute Based Access Control System Using Semantic Web Technologies

Lorenzo Cirio1, Isabel F. Cruz1, and Roberto Tamassia2
1 University of Illinois at Chicago
{lcirio,ifc}@cs.uic.edu
2 Brown University
rt@cs.brown.edu

Abstract.
We show how Semantic Web technologies can be used to
build an access control system. We follow the role-based access control
approach (RBAC) and extend it with contextual attributes. Our
approach provides for the dynamic association of roles with users. A Description
Logic (DL) reasoner is used to classify both users and resources,
and verify the consistency of the access control policies. We mitigate the
limited expressive power of the DL formalism by refining the output of
the DL reasoner with SPARQL queries. Finally, we provide a proof-ofconcept
implementation of the system written in Java.TM

R.Meersman,Z.Tari, P. Herrero et al. (Eds.):OTM2007 Ws, Part II,LNCS 4806, pp. 1256–1266, 2007.cSpringer-Verlag Berlin Heidelberg 2007