Java jena如何将默认前缀名称更改为我的前缀名称

我已经生成了这个RDF/XML数据

土木工程部
十二月
新闻部
代伊
电气工程部
迪伊

使用此代码：

String myNameSpace = "http://william_student/";
            Resource departmentClass = ResourceFactory.createResource(myNameSpace+"Department");
            Property abbreviationProperty = ResourceFactory.createProperty(myNameSpace, "abbreviation");
            Property descriptionProperty = ResourceFactory.createProperty(myNameSpace, "description");
            Model departmentModel = ModelFactory.createDefaultModel();
            Resource departmentInstance1 = departmentModel.createResource();
            departmentInstance1.addProperty(RDF.type, departmentClass);
            departmentInstance1.addProperty(abbreviationProperty, "DEI");

我用这个简单的代码写文件

File file = new File("D:/departments.rdf");
            fos = new FileOutputStream(file);
            departmentModel.write(fos);

如您所见，在RDF生成的数据中，有

j.0

前缀：

我的问题:

---

如何替换默认前缀

j.0

，但我的前缀如

vocabularyMarco

要编写RDF/XML，所有属性都必须有一个qname。杰娜发明了“j.0”等，当一个是需要的，但没有提供。因此，请在模型上设置您选择的前缀名称

model.setNsPrefix("vocabularyMarco", "http://marco_student/")

您的代码和数据在“”上不一致

它在上述代码段中创建前缀“citylsdi.org”

为了得到“vocabularyMarco”作为前缀 只用

// Namespace declarations

static final String companyUri = "citylsdi.org#";

Model model = ModelFactory.createDefaultModel();

model.setNsPrefix( "Indicator", "citylsdi.org#" );

Model model = ModelFactory.createDefaultModel();
model.setNsPrefix( "Indicator", "vocabularyMarco" );

// Create the types of Property we need to describe relationships in the model

Property cu_role = model.createProperty(companyUri,domain);

// Create resources representing the people in our model

Resource rs2 = model.createResource(companyUri+name);

rs2.addProperty(cu_role,"'"+role+"'");