我是指，BeanPostProcessor的postProcessAfterInitialization方法会在InitializingBean的afterPropertiesSet方法之后执行。有无相关代码？

是的，您说得对。下面是一个示例代码，用于演示BeanPostProcessor的postProcessAfterInitialization方法在InitializingBean的afterPropertiesSet方法之后执行的情况：

import org.springframework.beans.BeansException;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.beans.factory.config.BeanPostProcessor;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import org.springframework.stereotype.Component;

@Component
public class DemoBean implements InitializingBean, BeanPostProcessor {

    @Override
    public void afterPropertiesSet() throws Exception {
        System.out.println("InitializingBean's afterPropertiesSet method called");
    }

    @Override
    public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
        System.out.println("BeanPostProcessor's postProcessAfterInitialization method called for bean " + beanName);
        return bean;
    }

    public static void main(String[] args) {
        AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext();
        context.register(DemoBean.class);
        context.refresh();
        DemoBean demoBean = context.getBean(DemoBean.class);
    }
}

在上面的示例中，DemoBean实现了InitializingBean接口，并且重写了afterPropertiesSet方法。同时，DemoBean还实现了BeanPostProcessor接口，并重写了postProcessAfterInitialization方法。

在程序执行期间，当DemoBean被创建并初始化时，Spring容器会先调用InitializingBean的afterPropertiesSet方法，然后再调用BeanPostProcessor的postProcessAfterInitialization方法。因此，上面的示例代码的输出应该是：

InitializingBean's afterPropertiesSet method called
BeanPostProcessor's postProcessAfterInitialization method called for bean demoBean

这样，就证明了BeanPostProcessor的postProcessAfterInitialization方法确实是在InitializingBean的afterPropertiesSet方法之后执行的。