Spring with Xstream

Spring with Xstream Example

1. Spring and Xstream Integration

2. Example of Spring and Xstream Integration

Xstream is a library to serialize objects to xml and vice-versa without requirement of any mapping file. Notice that castor requires an mapping file.

XStreamMarshaller class provides facility to marshal objects into xml and vice-versa.

Example of Spring and Xstream Integration (Marshalling Java Object into XML)

You need to create following files for marshalling java object into XML using Spring with Xstream:

1. Employee.java

2. applicationContext.xml

3. Client.java

Required Jar files

To run this example, you need to load:

Spring Core jar files

Spring Web jar files

xstream-1.3.jar

Employee.java

If defines three properties id, name and salary with setters and getters.

package com.smgc;

public class Employee {

private int id;

private String name;

private float salary;

public int getId() {

return id;

}

public void setId(int id) {

this.id = id;

}

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public float getSalary() {

return salary;

}

public void setSalary(float salary) {

this.salary = salary;

}

}

applicationContext.xml

It defines a bean xstreamMarshallerBean where Employee class is bound with the OXM framework.

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

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

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

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

http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">

<bean id="xstreamMarshallerBean" class="org.springframework.oxm.xstream.XStreamMarshaller">

<property name="annotatedClasses" value="com.smgc.Employee"></property>

</bean>

</beans>

Client.java

It gets the instance of Marshaller from the applicationContext.xml file and calls the marshal method.

package com.smgc;

import java.io.FileWriter;

import java.io.IOException;

import javax.xml.transform.stream.StreamResult;

import org.springframework.context.ApplicationContext;

import org.springframework.context.support.ClassPathXmlApplicationContext;

import org.springframework.oxm.Marshaller;

public class Client{

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

ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");

Marshaller marshaller = (Marshaller)context.getBean("xstreamMarshallerBean");

Employee employee=new Employee();

employee.setId(101);

employee.setName("Piyush Patel");

employee.setSalary(100000);

marshaller.marshal(employee, new StreamResult(new FileWriter("employee.xml")));

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

}

}

Output of the example

employee.xml

<com.smgc.Employee>

<id>101</id>

<name>Piyush Patel</name>

<salary>100000.0</salary>

</com.smgc.Employee>