ApplicationContext And BeanFactory PostProcessor : ApplicationContext « Spring « Java Tutorial

1. Java Tutorial
2. Spring
3. ApplicationContext

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]);
  }
}

28.2.ApplicationContext
	28.2.1.	ApplicationContext component scan
	28.2.2.	Component Filter Assignable
	28.2.3.	Search By Base Package
	28.2.4.	Implements ApplicationListener
	28.2.5.	Implements ApplicationEvent Publisher Aware
	28.2.6.	Filter By Annotation
	28.2.7.	ApplicationContext Aware
	28.2.8.	ApplicationContext And BeanFactory PostProcessor