计算机科学论坛--请问，如何用程序，动态添加属性值？

贴子主题：请问，如何用程序，动态添加属性值？

本主题类别:

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>

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？


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