How to Marshall and UnMarshall POJO using Java

This blog explains about converting POJO(Plain Old Java Object) to XML and XML to POJO

- Below is the EmployeeDTO, Ensure to specify @XMLRootElement

       

  package com.fm.xmlutil.dto;

import javax.xml.bind.annotation.XmlRootElement;

@XmlRootElement
public class EmployeeDTO {
    public EmployeeDTO() {
        super();
    }
    private String fName;
    private String lName;
    private String address1;

    public void setFName(String fName) {
        this.fName = fName;
    }

    public String getFName() {
        return fName;
    }

    public void setLName(String lName) {
        this.lName = lName;
    }

    public String getLName() {
        return lName;
    }

    public void setAddress1(String address1) {
        this.address1 = address1;
    }

    public String getAddress1() {
        return address1;
    }
}

       
 

- Below is the XMLUtil class

       

  package com.fm.xmlutil;

import com.fm.xmlutil.dto.EmployeeDTO;

import java.io.StringReader;
import java.io.StringWriter;

import java.util.ArrayList;
import java.util.List;

import javax.xml.bind.JAXBContext;
import javax.xml.bind.Marshaller;
import javax.xml.bind.Unmarshaller;

/**
 * This class has the util methods to convert the POJOs to XML and vice versa using JAXB API.
 *
 * @author Fortune Minds
 */
public class XMLUtil {
   /**
     *This methodd converts Java Object to XML String
     * @param rootObject
     * @return
     * @throws Exception
     */
    public static String javaToXml(Object rootObject) throws Exception {
        StringWriter writer = new StringWriter();
        JAXBContext jaxbContext =
            JAXBContext.newInstance(rootObject.getClass());
        Marshaller jaxbMarshaller = jaxbContext.createMarshaller();
        jaxbMarshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
        jaxbMarshaller.marshal(rootObject, writer);
        return writer.toString();
    }



    /**
     * This method converts XML to Java Object
     * @param rootObject
     * @param xmlString
     * @return
     * @throws Exception
     */
    public static Object xmlToJava(Object rootObject,
                                   String xmlString) throws Exception {
        JAXBContext jaxbContext =
            JAXBContext.newInstance(rootObject.getClass());
        Unmarshaller jaxbUnmarshaller = jaxbContext.createUnmarshaller();
        return jaxbUnmarshaller.unmarshal(new StringReader(xmlString));
    }
    
    public static void main(String args[]){
        EmployeeDTO dto = new EmployeeDTO();
        dto.setFName("FortuneMinds");
        dto.setLName("Inc");
        dto.setAddress1("8000 Corporatecenter Drive");
        try {
            String r =javaToXml(dto);
            System.out.println(r);
        } catch (Exception e) {
            // TODO: Add catch code
            e.printStackTrace();
        }
        
    }
}

       
 

Note :  Have jaxb-api-2.2.jar on class path