RDF/XML Jena getValue

Question

我需要帮助从RDF和Jena框架中获取一些信息。我有一个RDF内容是这样的：

<rdf:RDF
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:ts="http://www.test.com/testModel.owl#">  
<ts:Entity rdf:ID="1234_test"> 
 <....>
</ts>
</rdf:RDF>

Model model = ModelFactory.createDefaultModel();
InputStream requestBody = new ByteArrayInputStream(request.getBytes());
String BASE = "http://www.test.com/testModel.owl#";
model.read(requestBody,BASE);
requestBody.close();

StmtIterator iter = model.listStatements();
 while (iter.hasNext()) {

        Statement stmt      = iter.nextStatement();  // get next statement
        Resource  subject   = stmt.getSubject();     // get the subject
        Property  predicate = stmt.getPredicate();   // get the predicate
        RDFNode   object    = stmt.getObject();      // get the object

            System.out.println(subject + " | "+predicate);

     }

<rdf:RDF
 xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
 xmlns:ts="http://www.test.com/testModel.owl#">  
<ts:Entity rdf:ID="1234_test"> 
   <ts:Resource> 
       <ts:testProp rdf:datatype="http://www.w3.org/2001/XMLSchema#string">test_ID_test</ts:testProp>
 </ts>
</ts>
</rdf:RDF>

我如何提取值test_id_test？？？如果我想用SPARQL，我怎么用Jena？？？

Answer 1

怎么样：

Resource ENTITY_TYPE = model.getResource("http://www.test.com/testModel.owl#Entity");
StmtIterator iter = model.listStatements(null, RDF.type, ENTITY_TYPE);
while (iter.hasNext()) {
    String entityID = iter.next().getSubject().getURI();
    System.out.println(entityID);
}

它将获取每个实体的URI。