JAVA EE: Spring and JAXB Integration | Spring Object/XML Mapping

Monday 28 January 2019

Spring and JAXB Integration | Spring Object/XML Mapping | jaxb marshalling and unmarshalling

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Spring and JAXB Integration | Spring Object/XML Mapping | jaxb marshalling and unmarshalling

pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0"

    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">

    <modelVersion>4.0.0</modelVersion>

    <groupId>com.ram.core</groupId>

    <artifactId>SpringDemo</artifactId>

    <packaging>jar</packaging>

    <version>1.0-SNAPSHOT</version>

    <name>SpringDemo</name>

    <url>http://maven.apache.org</url>

    <properties>

        <spring.version>5.1.1.RELEASE</spring.version>

    </properties>

    <dependencies>

        <dependency>

            <groupId>junit</groupId>

            <artifactId>junit</artifactId>

            <version>4.8.2</version>

            <scope>test</scope>

        </dependency>

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-core</artifactId>

            <version>${spring.version}</version>

        </dependency>

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-context</artifactId>

            <version>${spring.version}</version>

        </dependency>

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-oxm</artifactId>

            <version>${spring.version}</version>

        </dependency>

    </dependencies>

</project>

Company.java

package com.ram.core.model;

import javax.xml.bind.annotation.XmlAccessType;

import javax.xml.bind.annotation.XmlAccessorType;

import javax.xml.bind.annotation.XmlAttribute;

import javax.xml.bind.annotation.XmlElement;

import javax.xml.bind.annotation.XmlRootElement;

@XmlRootElement(name = "CompanyInfo", namespace = "com.ram.core")

@XmlAccessorType(XmlAccessType.NONE)

public class Company

{

    @XmlAttribute(name = "Id")

    private Integer id;

    @XmlElement(name = "CompanyName")

    private String companyName;

    @XmlElement(name = "CEO_Name")

    private String ceoName;

    @XmlElement(name = "Number_Of_Employees")

    private Integer numberOfEmployees;

    public Integer getId()

    {

        return id;

    }

    public void setId(Integer id)

    {

        this.id = id;

    }

    public String getCompanyName()

    {

        return companyName;

    }

    public void setCompanyName(String companyName)

    {

        this.companyName = companyName;

    }

    public String getCeoName()

    {

        return ceoName;

    }

    public void setCeoName(String ceoName)

    {

        this.ceoName = ceoName;

    }

    public Integer getNumberOfEmployees()

    {

        return numberOfEmployees;

    }

    public void setNumberOfEmployees(Integer numberOfEmployees)

    {

        this.numberOfEmployees = numberOfEmployees;

    }

    @Override

    public String toString()

    {

        return "Company [id=" + id + ", companyName=" + companyName

                + ", ceoName=" + ceoName + ", numberOfEmployees="

                + numberOfEmployees + "]";

    }

}

applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"

    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

    xmlns:oxm="http://www.springframework.org/schema/oxm"

    xsi:schemaLocation="http://www.springframework.org/schema/beans   

    http://www.springframework.org/schema/beans/spring-beans-4.3.xsd   

    http://www.springframework.org/schema/oxm  

    http://www.springframework.org/schema/oxm/spring-oxm-4.3.xsd">

    <oxm:jaxb2-marshaller id="jaxbMarshallerBean">

        <oxm:class-to-be-bound

            name="com.ram.core.model.Company" />

    </oxm:jaxb2-marshaller>

</beans>

App.java

package com.ram.core;

import java.io.FileReader;

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 com.ram.core.model.Company;

public class App

{

    public static void main(String[] args) throws IOException

    {

        ApplicationContext context = new ClassPathXmlApplicationContext(

                "applicationContext.xml");

        Marshaller marshaller = (Marshaller) context

                .getBean("jaxbMarshallerBean");

        Unmarshaller unmarshaller = (Unmarshaller) context

                .getBean("jaxbMarshallerBean");

        Company company = new Company();

        company.setId(201);

        company.setCompanyName("Google");

        company.setCeoName("Peter");

        company.setNumberOfEmployees(50000);

        // Perform Marshaling

        marshaller.marshal(company,

                new StreamResult(new FileWriter("company.xml")));

        System.out.println("XML Created Sucessfully");

        // Perform Unmarshaling

        Company company2 = (Company) unmarshaller

                .unmarshal(new StreamSource(new FileReader("company.xml")));

        System.out.println(company2);

        System.out.println("Converted XML to Object!");

    }

}

Output:

XML Created Sucessfully

Company [id=201, companyName=Google, ceoName=Peter, numberOfEmployees=50000]

Converted XML to Object!

company.xml

<?xml version="1.0" encoding="UTF-8" standalone="yes"?><ns2:CompanyInfo Id="201" xmlns:ns2="com.ram.core"><CompanyName>Google</CompanyName><CEO_Name>Peter</CEO_Name><Number_Of_Employees>50000</Number_Of_Employees></ns2:CompanyInfo>