Source Code : ApplicationContext And BeanFactoryPostProcessor

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ApplicationContext And BeanFactoryPostProcessor

       
File: context.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN"
    "http://www.springframework.org/dtd/spring-beans.dtd">

<beans>

  <bean id="w" class="java.lang.String">
  </bean>

 
  <bean id="allBeansLister" class="AllBeansLister"/>

</beans>


File: Main.java

import org.springframework.beans.BeansException;
import org.springframework.beans.factory.config.BeanFactoryPostProcessor;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

class Main {
  public static void main(String args[]) throws Exception {
    ApplicationContext ctx = new ClassPathXmlApplicationContext("context.xml");

    ctx.getBean("w");
  }
}

class AllBeansLister implements BeanFactoryPostProcessor {

  public void postProcessBeanFactory(ConfigurableListableBeanFactory factory) throws BeansException {

    System.out.println("The factory contains the followig beans:");
    String[] beanNames = factory.getBeanDefinitionNames();
    for (int i = 0; i < beanNames.length; ++i)
      System.out.println(beanNames[i]);
  }
}




           
       

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