如何將貓頭鷹類導入日食

Question

我想將語義Web（貓頭鷹）文件的類導入並列出到eclipse中。 我確實導入了我的eclipse程序的pellet和protege庫，但是仍然看到強制關閉我的android項目。 沒有紅線或錯誤代碼，因為我在Net Bean中使用了相同的代碼。 我的代碼在下面。

public static final IRI localLocation_IRI = IRI.create("file:c:///rdfex.owl");
public static final IRI Ont_Base_IRI = IRI.create("http://www.emkarhafriyat.com/owlex.owl");
    OWLOntologyManager m = OWLManager.createOWLOntologyManager();
    OWLDataFactory f = OWLManager.getOWLDataFactory();
    OWLOntology o = null;
    public void testAddAxioms() {
        try {
            o = m.loadOntologyFromOntologyDocument(Ont_Base_IRI);
            OWLClass clsA = f.getOWLClass(IRI.create(Ont_Base_IRI + "#ClassA"));
            OWLClass clsB = f.getOWLClass(IRI.create(Ont_Base_IRI + "#ClassB"));
            // Now create the axiom
            OWLAxiom ax1 = f.getOWLSubClassOfAxiom(clsA, clsB);
            // add the axiom to the ontology.
            AddAxiom addAxiom1 = new AddAxiom(o, ax1);
            // We now use the manager to apply the change
            m.applyChange(addAxiom1);
            // print all classes
            for (OWLClass cls : o.getClassesInSignature()) {
               EditText edit = (EditText) findViewById(R.id.editText1);
               edit.setText((CharSequence) cls);
            }
            m.removeOntology(o);
        } catch (Exception e) {
            EditText edit = (EditText) findViewById(R.id.editText1);
            edit.setText("Not successfull");
        }
    }

我把這個代碼段弄錯了

public static final IRI localLocation_IRI = IRI.create("file:c:///rdfex.owl");
public static final IRI Ont_Base_IRI = IRI.create("http://www.emkarhafriyat.com/owlex.owl");

Answer 1

URL http://www.emkarhafriyat.com/owlex.owl（404 ）中沒有本體，因此m.loadOntologyFromOntologyDocument(Ont_Base_IRI);無法加載任何內容m.loadOntologyFromOntologyDocument(Ont_Base_IRI); 你會得到一個錯誤。

要修復它，您應該在指定的URL中暴露OWL文件，或者從本地加載OWL文件。 您可以這樣操作：

//Create the file object
File file = new File("/your/local/path/example.owl");
// Now load the local copy of the ontology     
OWLOntology yourOntology = manager.loadOntologyFromOntologyDocument(file);