[U]
此主题相关图片如下：
这是在protege中做的Animal。程序为：
package cn.edu.Animal;
import com.hp.hpl.jena.rdf.model.*;
import com.hp.hpl.jena.ontology.*;
import java.util.Iterator;
public class TryOntology {
public static void main(String[] args) {
// 创建本体模型
OntModel ontModel = ModelFactory.createOntologyModel();
ontModel.read("file:D:\\Program Files\\Protege_3.4_rc1\\newAnimal.owl");
// 迭代显示模型中的类
for (Iterator i = ontModel.listClasses(); i.hasNext();)
{
OntClass c = (OntClass) i.next();
if (!c.isAnon()) // 如果不是匿名类
{ System.out.print("Class");
// 获取类的URI并输出，在输出时对URI做了简化（将命名空间前缀省略）
System.out.println(c.getModel().getGraph().getPrefixMapping ().shortForm(c.getURI()));
// 迭代显示当前类的父类
for (Iterator it = c.listSuperClasses(); it.hasNext();)
{
OntClass sp = (OntClass) it.next();
String str = c.getModel().getGraph().getPrefixMapping().shortForm(c.getURI())+ "'s superClass is " ;
String strSP = sp.getURI();
try{ // 另一种简化处理URI的方法
str = str + ":" + strSP.substring(strSP.indexOf('#')+1);
System.out.println(" Class" +str);
}
catch( Exception e ){ }
}
// 迭代显示当前类的子类
for (Iterator it = c.listSubClasses(); it.hasNext();)
{
System.out.print(" Class");
OntClass sb = (OntClass) it.next();
System.out.println(c.getModel().getGraph().getPrefixMapping().shortForm(c.getURI())+ "'s suberClass is "+ sb.getModel().getGraph().getPrefixMapping() .shortForm(sb.getURI()));
}
// 迭代显示与当前类相关的所有属性
for(Iterator ipp = c.listDeclaredProperties(); ipp.hasNext();)
{
OntProperty p = (OntProperty)ipp.next();
System.out.println(" associated property: " + p.getLocalName());
}
}
}
}
}
其运行结果是：
Class:Tree
Class:Tree's superClass is :Plant
associated property: eated
associated property: is_part_of
associated property: maineat
Class:Carnivore
Class:Carnivore's suberClass is :Lion
associated property: eated
associated property: is_part_of
associated property: maineat
Class:Lion
Class:Lion's superClass is :Carnivore
associated property: eated
associated property: is_part_of
associated property: maineat
Class:Animal
Class:Animal's superClass is :Resource
Class:Animal's suberClass is :Herbivore
Class:Animal's suberClass is :Giraffe
associated property: eated
associated property: is_part_of
associated property: eat
associated property: Belonging
associated property: maineat
Class:Branch
Class:Branch's superClass is :Plant
associated property: eated
associated property: is_part_of
associated property: maineat
Class:Herbivore
Class:Herbivore's superClass is :Animal
Class:Herbivore's superClass is :Resource
Class:Herbivore's suberClass is :Giraffe
associated property: eated
associated property: is_part_of
associated property: eat
associated property: Belonging
associated property: maineat
Class:Giraffe
Class:Giraffe's superClass is :Herbivore
Class:Giraffe's superClass is :Resource
Class:Giraffe's superClass is :Animal
associated property: eated
associated property: is_part_of
associated property: eat
associated property: Belonging
associated property: maineat
Class:Plant
Class:Plant's suberClass is :Tree
Class:Plant's suberClass is :Branch
Class:Plant's suberClass is :Leaf
associated property: eated
associated property: is_part_of
associated property: maineat
Class:Leaf
Class:Leaf's superClass is :Plant
associated property: eated
associated property: is_part_of
associated property: maineat
Class:Zoo
Class:Zoo's superClass is :Resource
associated property: eated
associated property: is_part_of
associated property: Address
associated property: Tel
associated property: maineat
[/U]问题是：Carnivore没有输出其superclass：Animal。希望大家帮忙看看问题在哪呢？谢谢了哦！！
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2009/3/23 23:29:00
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帮忙看下程序错在哪呢，谢谢了哦！！
