Java Object to XML in Order with Annotation

Java Object to XML in Order with Annotation

Here is the sample Course.java POJO

package com.sillycat.connectors.quickbooks.models;
import javax.xml.bind.annotation.*;
import java.util.Date;
@XmlRootElement(name = "Course")
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(propOrder = {
"id",
        "date",
        "name",
        "description",
        "attendees"
})
public class Course {

    private Long id;
    private Integer attendees;
    private String name;
    private String description;
    private Date date;
…snip…
}
Student POJO which demo the complex Object
package com.sillycat.connectors.quickbooks.models;
import java.util.List;
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlRootElement;
import javax.xml.bind.annotation.XmlType;
@XmlRootElement(name = "Student")
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(propOrder = {
    "id”,
    "age”,
    "name”,
    "others”,
    "main" })
public class Student {
private Long id;
private String name;
private Integer age;
private Course main;
private List<Course> others;
…snip…
}
Here is the Main Class to Run that
package com.sillycat.connectors.quickbooks.models;
import java.io.StringWriter;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;
public class ConvertObjectToXmlMain {
public static void main(String[] args) throws JAXBException {
Course c1 = new Course();
c1.setAttendees(100);
c1.setDate(new Date());
c1.setDescription("test desc");
c1.setId(10l);
c1.setName("Yiyi Kang");
Course c2 = new Course();
c2.setAttendees(122);
c2.setDate(new Date());
c2.setDescription("test desc java");
c2.setId(11l);
c2.setName("Java");
Course c3 = new Course();
c3.setAttendees(133);
c3.setDate(new Date());
c3.setDescription("test desc python");
c3.setId(2l);
c3.setName("Python");
Student s = new Student();
List<Course> others = new ArrayList<Course>();
others.add(c2);
others.add(c3);
s.setAge(12);
s.setId(1001l);
s.setMain(c1);
//s.setOthers(others);

// create jaxb context
JAXBContext jaxbContext = JAXBContext.newInstance(Student.class);
// create jaxb marshaller
Marshaller jaxbMarshaller = jaxbContext.createMarshaller();
// pretty print xml
jaxbMarshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, Boolean.TRUE);
StringWriter sw = new StringWriter();
// marshal object
jaxbMarshaller.marshal(s, sw);

String xml = sw.toString();

System.out.println(xml);
}
}

References:
https://stackoverflow.com/questions/9151690/getting-marshall-result-into-string
https://stackoverflow.com/questions/5435138/jaxb-and-property-ordering
https://kodejava.org/how-do-i-define-the-xml-element-order-in-jaxb/
https://memorynotfound.com/convert-java-object-xml-specific-order-using-jax-b/