Spring OXM - 測試 JAXB2

使用編組器和解組器物件建立主類 OXMApplication.java。此類的目的是使用編組器物件將一個學生物件編組為 student.xml，然後使用解組器物件將 student.xml 解組為學生物件。

示例

OXMApplication.java

package com.tutorialspoint.oxm;

import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.IOException;
import javax.xml.transform.stream.StreamResult;
import javax.xml.transform.stream.StreamSource;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.oxm.Marshaller;
import org.springframework.oxm.Unmarshaller;
import org.springframework.oxm.XmlMappingException;
import com.tutorialspoint.oxm.model.Student;

public class OXMApplication {
   public static void main(String[] args) {
      ApplicationContext context = new ClassPathXmlApplicationContext("applicationcontext.xml");  
      Marshaller marshaller = (Marshaller)context.getBean("jaxbMarshaller");
      Unmarshaller unmarshaller = (Unmarshaller)context.getBean("jaxbMarshaller");

      // create student object
      Student student = new Student();
      student.setAge(14);
      student.setName("Soniya");

      try {
         marshaller.marshal(student, new StreamResult(new FileWriter("student.xml")));  
         System.out.println("Student marshalled successfully.");  
         FileInputStream is =  new FileInputStream("student.xml");
         Student student1 = (Student)unmarshaller.unmarshal(new StreamSource(is));
         System.out.println("Age: " + student1.getAge() + ", Name: " + student1.getName());
      } catch(IOException | XmlMappingException ex) {
         ex.printStackTrace();
      }
   }
}

輸出

在 eclipse 中的該檔案的正文區域處單擊右鍵，然後選擇 以 Java 應用程式執行，再驗證輸出。

Oct 10, 2021 8:48:12 PM org.springframework.context.support.ClassPathXmlApplicationContext prepareRefresh
INFO: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@1e127982: startup date 
[Sun Oct 10 20:48:12 IST 2021]; root of context hierarchy
Oct 10, 2021 8:48:12 PM org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
INFO: Loading XML bean definitions from class path resource [applicationcontext.xml]
Oct 10, 2021 8:48:13 PM org.springframework.oxm.jaxb.Jaxb2Marshaller createJaxbContextFromClasses
INFO: Creating JAXBContext with classes to be bound [class com.tutorialspoint.oxm.model.Student]
Student marshalled successfully.
Age: 14, Name: Soniya