How to use

addBeanPostProcessor

method

in

org.springframework.beans.factory.config.ConfigurableBeanFactory

ConfigurableBeanFactory cbf = (ConfigurableBeanFactory) cac.getBeanFactory();
cbf.addBeanPostProcessor(new BeanPostProcessor() {
  @SuppressWarnings("unchecked")
  public Object postProcessBeforeInitialization(Object bean, String beanName) {

public static void lifeCycleInBeanFactory(String xmlPath, String beanId) {
  //装载配置文件并启动容器
  Resource res = new ClassPathResource(xmlPath);
  BeanFactory bf = new XmlBeanFactory(res);
  //向容器中注册MyBeanPostProcessor后处理器
  ((ConfigurableBeanFactory) bf).addBeanPostProcessor(new MyBeanPostProcessor());
  //向容器中注册MyInstantiationAwareBeanPostProcessor后处理器
  ((ConfigurableBeanFactory) bf).addBeanPostProcessor(new MyInstantiationAwareBeanPostProcessor());
  //第一次从容器中获取car，将触发容器实例化该Bean,这将引发Bean生命周期方法调用
  Car car1 = (Car) bf.getBean(beanId);
  car1.introduce();
  car1.setColor("红色");
  System.out.println("第二次从容器中获取car");
  //第二次从容器中获取car，若为 singleton,直接从缓存池获取
  Car car2 = (Car) bf.getBean(beanId);
  System.out.println("car1==car2：" + (car1 == car2));
  //关闭容器
  ((XmlBeanFactory) bf).destroySingletons();
}

public void afterPropertiesSet() throws Exception {
 ConfigurableApplicationContext cac = (ConfigurableApplicationContext) applicationContext;
 ConfigurableBeanFactory cbf = cac.getBeanFactory();
 final Set guardSet = new HashSet();
 cbf.addBeanPostProcessor(new BeanPostProcessor() {
  public Object postProcessBeforeInitialization(Object bean, String beanName)
    throws BeansException {
   guardSet.add(beanName);
   return bean;
  }
 
  public Object postProcessAfterInitialization(Object bean, String beanName)
    throws BeansException {
   return bean;
  }
 });
 TLABPostProcessor processor = new TLABPostProcessor();
 processor.setApplicationContext(applicationContext);
 processor.checkGuard(guardSet);
 processor.setMappingContext(mappingContext == null? SAXalizerMappingContext.instance() : mappingContext);
  cbf.addBeanPostProcessor(processor);
}