java - Bean 后处理器实现

Question

根据Spring Boot文档

An ApplicationContext can autodetect BeanPostProcessor beans in its bean definitions and apply those post-processors to any beans subsequently created

我在主类包中创建了一个自定义bean后处理器类，但它不起作用。这是代码。

public class DataBeanPostProcessor implements BeanPostProcessor, Ordered {
    @Override
    public Object postProcessBeforeInitialization(Object bean, String beanName) throws BeansException {
        LogFactory.getLog(this.getClass()).info("Before Processing- " + beanName);
        return bean;
    }
    @Override
    public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
        LogFactory.getLog(this.getClass()).info("After Processing- " + beanName);
        return bean;
    }


    @Override
    public int getOrder() {
        return Integer.MAX_VALUE;
    }
}

Answer 1

正如daniu在评论中所说，你必须添加@Component

@Component
public class DataBeanPostProcessor implements BeanPostProcessor, Ordered {
    @Override
    public Object postProcessBeforeInitialization(Object bean, String beanName) throws BeansException {
        LogFactory.getLog(this.getClass()).info("Before Processing- " + beanName);
        return bean;
    }
    @Override
    public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
        LogFactory.getLog(this.getClass()).info("After Processing- " + beanName);
        return bean;
    }


    @Override
    public int getOrder() {
        return Integer.MAX_VALUE;
    }
}