Spring boot: Importing xml configuration

@ImportResource annotation is used to load one or more xml configuration files.

How to specify the configuration files using @ImportResource annotation?

Use @ImportResource on a @Configuration class to load XML configuration files.

Example

@Configuration

@ImportResource("classpath:/configurations/myBeans.xml")

public class MyConfigurations {

}

Employee.java

package com.sample.myApp.model;

import org.springframework.stereotype.Component;

@Component
public class Employee {

 private int id;
 private String firstName;
 private String lastName;

 public int getId() {
  return id;
 }

 public void setId(int id) {
  this.id = id;
 }

 public String getFirstName() {
  return firstName;
 }

 public void setFirstName(String firstName) {
  this.firstName = firstName;
 }

 public String getLastName() {
  return lastName;
 }

 public void setLastName(String lastName) {
  this.lastName = lastName;
 }

 @Override
 public String toString() {
  return "Employee [id=" + id + ", firstName=" + firstName + ", lastName=" + lastName + "]";
 }

}

EmployeeConfiguration.java

package com.sample.myApp.Configuration;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import com.sample.myApp.model.Employee;

@Configuration
public class EmployeeConfiguration {
 
 @Bean
 public Employee getDefaultEmployee() {
  Employee emp = new Employee();
  emp.setFirstName("NO_NAME");
  emp.setId(-1);
  emp.setLastName("NO_NAME");
  return emp;
 }
}

MyConfigurations.java

package com.sample.myApp.Configuration;

import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.ImportResource;

@Configuration
@ImportResource("classpath:/configurations/myBeans.xml")
public class MyConfigurations {

}

I created myBeans.xml file under src/main/resources/configurations folder.

myBeans.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"
 xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd">

 <bean name="krishna" class="com.sample.myApp.model.Employee">
  <property name="id" value="123" />
  <property name="lastName" value="Gurram" />
  <property name="firstName" value="Krishna" />
 </bean>

</beans>

Application.java

package com.sample.myApp;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ConfigurableApplicationContext;

import com.sample.myApp.model.Employee;

@SpringBootApplication
public class Application {

 public static void main(String args[]) {
  ConfigurableApplicationContext applicationContext = SpringApplication.run(Application.class, args);

  Employee employee1 = (Employee) applicationContext.getBean("getDefaultEmployee");
  Employee employee2 = (Employee) applicationContext.getBean("krishna");

  System.out.println(employee1);
  System.out.println(employee2);

  applicationContext.close();
 }
}

Output

Employee [id=-1, firstName=NO_NAME, lastName=NO_NAME]
Employee [id=123, firstName=Krishna, lastName=Gurram]

Project structure looks like below.

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