Spring @ImportResource Example
November 07, 2021
@ImportResource annotation imports the XML configurations in JavaConfig based applications. The class annotated with @Configuration can use @ImportResource annotation to load XML configurations.
In JavaConfig based applications, it may also require to use some XML configurations for some purpose. Another scenario can be that the old application based on XML configuration is being upgraded to JavaConfig based application. To keep bean definition at both places, in JavaConfig as well as XML configuration, we can use
@ImportResource annotation.
Find the code snippet to use
@ImportResource annotation.
@Configuration
@ImportResource("classpath:/app-conf.xml")
public class AppConfig {
------
}
Using @ImportResource Annotation
Find the example where we have one bean defined in XML configuration and one bean defined in JavaConfig file. We will import XML configuration with the help of@ImportResource annotation in JavaConfig class and will fetch values of both beans.
app-conf.xml
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:util="http://www.springframework.org/schema/util"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/util
http://www.springframework.org/schema/util/spring-util.xsd">
<bean id="subscription" class="com.concretepage.Subscription">
<property name="name" value="Subscription"/>
<property name="type" value="Weekly"/>
</bean>
</beans>
package com.concretepage;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.ImportResource;
@Configuration
@ImportResource("classpath:/app-conf.xml")
public class AppConfig {
@Bean(name="entitlement")
public Entitlement entitlement(){
Entitlement ent= new Entitlement();
ent.setName("Entitlement");
ent.setTime(20);
return ent;
}
}
package com.concretepage;
public class Entitlement {
private String name;
private int time;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getTime() {
return time;
}
public void setTime(int time) {
this.time = time;
}
}
package com.concretepage;
public class Subscription {
private String name;
private String type;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getType() {
return type;
}
public void setType(String type) {
this.type = type;
}
}
package com.concretepage;
import java.sql.SQLException;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
public class AppTest {
public static void main(String[] args) throws SQLException {
AnnotationConfigApplicationContext ctx = new AnnotationConfigApplicationContext();
ctx.register(AppConfig.class);
ctx.refresh();
Entitlement ent= (Entitlement)ctx.getBean("entitlement");
System.out.println(ent.getName());
System.out.println(ent.getTime());
Subscription sub= (Subscription)ctx.getBean("subscription");
System.out.println(sub.getName());
System.out.println(sub.getType());
}
}
Entitlement 20 Subscription Weekly
