Spring BeanNameAware Example
October 28, 2021
BeanNameAware example. The BeanNameAware interface is implemented by beans that want to be aware of their bean name in a bean factory. The BeanNameAware has setBeanName method that needs to be overriden by beans.
Implement BeanNameAware
TheBeanNameAware has following method.
void setBeanName(String name)
setBeanName is invoked after population of normal bean but before an init callback.
Find the code to use
BeanNameAware.
Book.java
package com.concretepage;
import org.springframework.beans.factory.BeanNameAware;
public class Book implements BeanNameAware {
private String bookName;
@Override
public void setBeanName(String beanName) {
System.out.println(beanName +" bean has been initialized." );
}
public Book(String bookName) {
System.out.println("--Inside Constructor--");
this.bookName = bookName;
}
public String getBookName() {
return bookName;
}
}
Configure Bean
We are using XML configuration to configure our bean.app-conf.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 id="myBook" class="com.concretepage.Book">
<constructor-arg name="bookName" value="Mahabharat"/>
</bean>
</beans>
Run Demo Application
Find the class to run the demo.SpringDemo.java
package com.concretepage;
import org.springframework.context.support.AbstractApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class SpringDemo {
public static void main(String[] args) {
AbstractApplicationContext context = new ClassPathXmlApplicationContext("app-conf.xml");
Book book = (Book)context.getBean("myBook");
System.out.println("Book Name:" + book.getBookName());
context.close();
}
}
constructor is called and after that setBeanName() is called.
--Inside Constructor-- myBook bean has been initialized. Book Name:Mahabharat
