整理在Spring IOC容器初始化后可以处理特定逻辑的多种实现方式

package cn.zuowenjun.demo.ioc.service;

import cn.zuowenjun.demo.ioc.mapper.DemoInfoMapper;
import org.springframework.aop.support.AopUtils;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.beans.factory.config.BeanPostProcessor;
import org.springframework.boot.ApplicationArguments;
import org.springframework.boot.ApplicationRunner;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.context.ApplicationListener;
import org.springframework.context.SmartLifecycle;
import org.springframework.context.event.ContextRefreshedEvent;
import org.springframework.stereotype.Component;
import org.springframework.web.context.WebApplicationContext;

import javax.annotation.PostConstruct;
import java.util.Date;

@Component
public class DemoModesCollection
        implements ApplicationContextAware,
        ApplicationListener<ContextRefreshedEvent>,
        ApplicationRunner,
        SmartLifecycle,
        InitializingBean,
        BeanPostProcessor {

    private  ApplicationContext context;


    @PostConstruct
    public void postConstructMethod(){
        System.out.printf("%1$tF %1$tT.%1$tL --->@PostConstruct postConstructMethod:running!%n",new Date());
        DemoInfoMapper mapper= context.getBean(DemoInfoMapper.class);

        System.out.println("@PostConstruct >>>context.getBean:" + (mapper==null?"null":AopUtils.getTargetClass(mapper).getName()));
    }

    @Override
    public void afterPropertiesSet() throws Exception {
        System.out.printf("%1$tF %1$tT.%1$tL --->InitializingBean.afterPropertiesSet:running!%n",new Date());
        DemoInfoMapper mapper= context.getBean(DemoInfoMapper.class);
        System.out.println("afterPropertiesSet >>>context.getBean:" + (mapper==null?"null":AopUtils.getTargetClass(mapper).getName()));
    }

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        System.out.printf("%1$tF %1$tT.%1$tL --->ApplicationContextAware.setApplicationContext:running! ===beansCount:%2$d %n",
                new Date(), applicationContext.getBeanDefinitionCount());
        this.context=applicationContext;
        DemoInfoMapper mapper= context.getBean(DemoInfoMapper.class);
        System.out.println("setApplicationContext >>>context.getBean:" + (mapper==null?"null":AopUtils.getTargetClass(mapper).getName()));
    }

    @Override
    public void onApplicationEvent(ContextRefreshedEvent event) {

        if (event.getApplicationContext().getParent() == null || event.getApplicationContext() instanceof WebApplicationContext) {
            System.out.printf("%1$tF %1$tT.%1$tL --->ApplicationListener.onApplicationEvent:running! ===beansCount:%2$d  (beanType:%3$s) %n",
                    new Date(), event.getApplicationContext().getBeanDefinitionCount(), event.getApplicationContext().getClass().getTypeName());

            DemoInfoMapper mapper= event.getApplicationContext().getBean(DemoInfoMapper.class);
            System.out.println("onApplicationEvent >>>context.getBean:" + (mapper==null?"null":AopUtils.getTargetClass(mapper).getName()));
        }
    }

    @Override
    public void run(ApplicationArguments args) throws Exception {
        System.out.printf("%1$tF %1$tT.%1$tL --->ApplicationRunner.run:running!%n", new Date());
        DemoInfoMapper mapper= context.getBean(DemoInfoMapper.class);
        System.out.println("run >>>context.getBean:" + (mapper==null?"null":AopUtils.getTargetClass(mapper).getName()));
    }



    private boolean isRunning = false;

    @Override
    public void start() {

        System.out.printf("%1$tF %1$tT.%1$tL --->SmartLifecycle.start:running!%n",new Date());

        isRunning=true;

        DemoInfoMapper mapper= context.getBean(DemoInfoMapper.class);
        System.out.println("start >>>context.getBean:" + (mapper==null?"null":AopUtils.getTargetClass(mapper).getName()));
    }

    @Override
    public void stop() {
        isRunning = false;
    }

    @Override
    public boolean isRunning() {
        return isRunning;
    }



    @Override
    public Object postProcessBeforeInitialization(Object bean, String beanName) throws BeansException {
        System.out.printf("%1$tF %1$tT.%1$tL --->BeanPostProcessor.postProcessBeforeInitialization:running!%n",new Date());
        DemoInfoMapper mapper= context.getBean(DemoInfoMapper.class);
        System.out.println("postProcessBeforeInitialization >>>context.getBean:" + (mapper==null?"null":AopUtils.getTargetClass(mapper).getName()));
        return bean;
    }

    @Override
    public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
        System.out.printf("%1$tF %1$tT.%1$tL --->BeanPostProcessor.postProcessAfterInitialization:running!%n",new Date());
        DemoInfoMapper mapper= context.getBean(DemoInfoMapper.class);
        System.out.println("postProcessAfterInitialization >>>context.getBean:" + (mapper==null?"null":AopUtils.getTargetClass(mapper).getName()));
        return bean;
    }
}