事件

import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationEvent;
import org.springframework.stereotype.Component;
@Component
public class Event extends ApplicationEvent {
    /**
     * 构造器
     * @param source
     */
    public Event(ApplicationContext source) {
        super(source);
    }
    /**
     * 模拟业务执行逻辑
     */
    public void echo(){
        System.out.println("模拟业务执行逻辑");
    }
}

事件监听

import com.test.demo.textdemo.gcz.event.Event;
import org.springframework.context.ApplicationListener;
import org.springframework.stereotype.Component;
@Component
public class EventListener implements ApplicationListener<Event> {
    @Override
    public void onApplicationEvent(Event event) {
        event.echo();
    }
}

或

import com.test.demo.textdemo.gcz.event.Event;
import org.springframework.context.event.EventListener;
import org.springframework.stereotype.Component;
@Component
public class EventListenerAnon {
    @EventListener
    public void onApplicationEvent(Event event) {
        event.echo();
    }
}

事件发布

import com.test.demo.textdemo.gcz.event.Event;
import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;
@Component
public class PublisherAware implements ApplicationContextAware {
    private ApplicationContext applicationContext;
    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        this.applicationContext = applicationContext;
    }
    public void publisherEvent(Event event) {
        System.out.println("---开始发布 Event 事件---");
        applicationContext.publishEvent(event);
    }
}

单元测试

import com.test.demo.textdemo.TextDemoApplication;
import com.test.demo.textdemo.gcz.event.Event;
import com.test.demo.textdemo.gcz.publisher.PublisherAware;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;
@SpringBootTest(classes = TextDemoApplication.class)
@RunWith(SpringRunner.class)
public class TestDemo {
    @Autowired
    private PublisherAware publisherAware;
    @Autowired
    private Event event;
    @Test
    public void test() {
        publisherAware.publisherEvent(event);
    }
}
//runtime
---开始发布 Event 事件---
模拟业务执行逻辑
模拟业务执行逻辑