create RDF from XML | 易学教程

问题

I have this xml file, how can I create RDF triple from it using xpath and ModelFactory in java?

<xml>
<person>
<name>Joe</name>
<website url="www.example1.com">contact1</website >
<vote>20</vote>
</person>
<person>
<name>Anna</name>
<website url="www.example2.com">contact2</website>
<vote>80</vote>
</person>
</xml>

Thanks for help

Thanks for replay, I would like to obtain following RDF

 <rdf:Description rdf:about="http://www.example.com/xml">
<j.0:hasCritic>Joe</j.0:hasCritic>
     <rdf:Description rdf:about=Joe >
     <j.0:haswebsite>"www.example1.com"</j.0:haswebsite>
      <j.0:hascontact>contact1</j.0:hascontact>
      <j.0:hasvote>80</j.0:hasvote>
  </rdf:Description>
  <j.0:hasCritic>Anna</j.0:hasCritic>
     <rdf:Description rdf:about=Anna>
     <j.0:haswebsite>"www.example2.com"</j.0:haswebsite>
      <j.0:hascontact>contact2</j.0:hascontact>
      <j.0:hasvote>20</j.0:hasvote>
</rdf:Description>

回答1:

You can use jena api for creating RDf model. Just parse xml file using dom parser and create Resourse , Property or Literal using Jena API. After creating this simply add into model.

Example:-
Model rdfModel = ModelFactory.createDefaultModel();
Resource resourse = rdfModel.createResource(Resourse Text);
Property property = rdfModel.createProperty(Property Text);
Literal literal = rdfModel.createLiteral(Literal Text);
resourse.addLiteral(property,literal);

Using Jena API you can store this model into rdf database(Triple).

回答2:

Grddl might be a workable approach, Jena has an implementation which is pretty straightforward to use. Otherwise, just a basic XSLT script could pretty easily transform that snippet into RDF. Hell, you could probably even just write a basic SAX listener and do the transformation there. There's no magical thing that will do it for you, you're going to have to put in some work, but there are options available.

回答3:

package tutorial;
import com.hp.hpl.jena.rdf.model.Model;
import com.hp.hpl.jena.rdf.model.ModelFactory;
import com.hp.hpl.jena.rdf.model.Property;
import com.hp.hpl.jena.rdf.model.Resource;

public class Test01 {
public static void main(String[] args) {
Model m = ModelFactory.createDefaultModel();
String NS = "<http://www.example.com/>";

Resource r1 = m.createResource( NS+"xml" );
Resource r2 = m.createResource( NS+"Joe" );
Resource r3 = m.createResource( NS+"Anna" );            
Property p1 = m.createProperty( NS+"hasCritic1" );
Property p2 = m.createProperty( NS+"hasCritic2" ); 
Property p3 = m.createProperty( NS+"hasWebsite" );
Property p4 = m.createProperty( NS+"hasContact" );
Property p5 = m.createProperty( NS+"hasVote" );

r1.addProperty(p1,r2);
r1.addProperty(p2,r3);
r2.addProperty(p3,"<http://www.example1.com>");
r2.addProperty(p4,"contact1");
r2.addProperty(p5,"80");
r3.addProperty(p3,"<http://www.example2.com>");
r3.addProperty(p4,"contact2");
r3.addProperty(p5,"20");
m.write( System.out );
} 
}

来源：https://stackoverflow.com/questions/10385143/create-rdf-from-xml

标签

xml

rdf

semantic-web