Java/Spring/BeanFactoryPostProcessor
Add BeanFactoryPostProcessor To XmlBeanFactory
<source lang="java">
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.beans.factory.xml.XmlBeanFactory; import org.springframework.core.io.ClassPathResource; class Main {
public static void main(String args[]) throws Exception { XmlBeanFactory factory = new XmlBeanFactory(new ClassPathResource("context.xml")); factory.getBean("w"); AllBeansLister lister = new AllBeansLister(); lister.postProcessBeanFactory(factory); }
} 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]); }
}
</source>
ApplicationContext And BeanFactoryPostProcessor
<source lang="java">
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]); }
}
</source>