JAXB Sample

秒速五厘米 2022-08-08 00:44 192阅读 0赞

1. Schema文件：

<?xml version="1.0" encoding="UTF-8"?>
    <schema xmlns="http://www.w3.org/2001/XMLSchema" xmlns:tns="http://www.liulutu.com/students/" targetNamespace="http://www.liulutu.com/students/">
    	<element name="students">
    		<complexType>
    			<sequence>
    				<element name="student" type="tns:StudentType" maxOccurs="unbounded" />
    			</sequence>
    		</complexType>
    	</element>
    
    	<simpleType name="SexType">
    		<restriction base="string">
    			<enumeration value="Male" />
    			<enumeration value="Female" />
    		</restriction>
    	</simpleType>
    
    	<complexType name="StudentType">
    		<attribute name="sex" type="tns:SexType" />
    		<attribute name="name" type="string" />
    	</complexType>
    </schema>

2. 生成Model类：

*  Eclipse开发环境中，右键选中Schema文件 --> Generate --> JAXB Classes

![Center][]

*  生成的JAXB Model Classes 如下：

![Center 1][]

3. 测试启动类：

package demo;
    
    import javax.xml.bind.JAXBContext;
    import javax.xml.bind.JAXBException;
    import javax.xml.bind.Marshaller;
    
    import demo.model.ObjectFactory;
    import demo.model.SexType;
    import demo.model.StudentType;
    import demo.model.Students;
    
    public class JaxbDemo {
    
    	private static void addStudent(ObjectFactory factory, Students students, String name, SexType type) {
    		StudentType studentType = factory.createStudentType();
    
    		studentType.setName(name);
    		studentType.setSex(type);
    
    		students.getStudent().add(studentType);
    	}
    
    	public static void main(String[] args) throws JAXBException {
    		ObjectFactory factory = new ObjectFactory();
    		Students students = factory.createStudents();
    
    		JaxbDemo.addStudent(factory, students, "Jim", SexType.MALE);
    		JaxbDemo.addStudent(factory, students, "Merry", SexType.FEMALE);
    
    		JAXBContext jaxbContext = JAXBContext.newInstance("demo.model");
    
    		Marshaller marshaller = jaxbContext.createMarshaller();
    		marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
    		marshaller.marshal(students, System.out);
    	}
    
    }

4. 结果输出：

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
    <ns2:students xmlns:ns2="http://www.liulutu.com/students/">
        <student sex="Male" name="Jim"/>
        <student sex="Female" name="Merry"/>
    </ns2:students>

[Center]: /images/20220805/136f6d074dfb4bd8ad961133321f10c2.png
[Center 1]: /images/20220805/2659a6c4bed64b71946c58444cabdf63.png