-- 发布时间：2/17/2006 9:54:00 PM
-- 请问，如何用程序，动态添加属性值？
源代码如下：
String file = "test1.owl";
Model data = ModelFactory.createDefaultModel();
Model model = ModelFactory.createDefaultModel();
InputStream in ;
in = FileManager.get().open( file );
data.read(in, "");
Property p1=data.getProperty("http://www.domain2.com#hasGrade");
Resource r = data.getResource("http://www.owl-ontologies.com/unnamed.owl#aaaa");
Resource A = data.createResource("http://www.owl-ontologies.com/unnamed.owl#"+ "fail");
r.addProperty(p1, A);
test1.owl文件代码如下：
<?xml version="1.0"?>
<rdf:RDF
xmlns:pub="http://www.domain2.com#"
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:xsd="http://www.w3.org/2001/XMLSchema#"
xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
xmlns:owl="http://www.w3.org/2002/07/owl#"
xmlns="http://www.owl-ontologies.com/unnamed.owl#"
xml:base="http://www.owl-ontologies.com/unnamed.owl">
<owl:Ontology rdf:about=""/>
<owl:Class rdf:about="http://www.domain2.com#grade"/>
<owl:Class rdf:about="http://www.domain2.com#course"/>
<owl:ObjectProperty rdf:about="http://www.domain2.com#hasGrade"/>
<pub:grade rdf:ID="aaaa"/>
</rdf:RDF>
<!-- Created with Protege (with OWL Plugin 2.1, Build 284) http://protege.stanford.edu -->
运行后系统提示：<line 1 column1>:Content is not allowed in prolog.
<rdf :RDF
xmlns:j.0="http://www.domain2.com#"
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#">
<rdf:Description rdf:about="http://www.owl-ontologies.com/unnamed.owl#aaaa">
<j.0:hasGade rdf:resource="http://www.owl-ontologies.com/unnamed.owl#fail"/>
</rdf:Descripton>
</rdf:RDF>
我想问下，这个问题应该怎么解决啊？