java - RDF数据集: write a DataSource into a file

Question

我想将数据源中的结果写入文件中。我创建了一个默认图表，然后向其中添加了一些命名图表。我已经拥有的代码如下:

                DataSource  datasource = DatasetFactory.create() ;
                Model model1 = ModelFactory.createDefaultModel();
                datasource.setDefaultModel(model1);
                Resource subject = model1.createResource(g);
                Property predicateSource = model1.createProperty(prefix.concat(hassource));
                Property predicateProbability = model1.createProperty(prefix.concat(hasprobability));
                Resource objectSource = model1.createResource(source);      
                Resource objectProbability = model1.createResource(probability); 
                model1.add(subject, predicateSource, objectSource);
                model1.add(subject, predicateProbability, objectProbability);
                this.translator.stringToRDF(lineRDF,lineSplit);
                datasource.addNamedModel(g, this.translator.getModel()) ;   

Answer 1

来自Apache Jena文档:

FileWriter out = new FileWriter( fileName );
try {
   RDFDataMgr.write(out, model1, "TURTLE") ;
}
finally {
  try {
     out.close();
  }
  catch (IOException closeException) {
  }
}

您还可以使用model.write()，如Jena library is not writing output to an external RDF/XML file所示.