1、创建消息的实体类

package com.demo;

/**
 * 监听的实体类
 *
 */
public class EventMessage {
    private String name;

    public EventMessage(String name) {
        this.name = name;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }
}

2、创建消息接收

package com.demo;

import org.springframework.context.event.EventListener;
import org.springframework.stereotype.Component;

@Component
public class MessageEventListener {

    @EventListener(EventMessage.class)
    public void onApplicationEvent(EventMessage eventMessage) {
        System.out.println("监听器接收的消息："+ eventMessage.getName());
    }
}

3、消息发送的controller

package com.demo;


import org.springframework.context.ApplicationContext;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.annotation.Resource;

@RestController
public class MessageController {

    @Resource
    private ApplicationContext applicationContext;

    @RequestMapping("/messageListener")
    public String messageListener(){
        applicationContext.publishEvent(new EventMessage("你好帅"));
        return "success";
    }
}

4、使用postman触发

5、结果