package com.jysemel.spring.boot.study.event;

import lombok.Getter;
import lombok.Setter;
import org.springframework.context.ApplicationEvent;


@Setter
@Getter
public class UserRegisteredEvent extends ApplicationEvent {

    private String userName;
    private String nickName;

    public UserRegisteredEvent(Object source, String userName, String nickName) {
        super(source);
        this.userName = userName;
        this.nickName = nickName;
    }

}

事件发布

package com.jysemel.spring.boot.study.service;

import com.jysemel.spring.boot.study.event.UserRegisteredEvent;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationEventPublisher;
import org.springframework.stereotype.Service;


@Service
public class StoreService {

    @Autowired
    private ApplicationEventPublisher publisher;

    public void register(UserRegisteredEvent registeredEvent) {

        // 执行核心注册逻辑...
        System.out.println("用户 " + registeredEvent.getNickName() + " 注册成功");

        // 发布事件
        publisher.publishEvent(registeredEvent);
    }
}

事件监听

package com.jysemel.spring.boot.study.listener;


import com.jysemel.spring.boot.study.event.UserRegisteredEvent;
import org.springframework.context.event.EventListener;
import org.springframework.stereotype.Component;

/**
 * 方式二：使用@EventListener注解（更推荐）
 */
@Component
public class CouponListener {



    @EventListener
    public void handleUserRegisteredEvent(UserRegisteredEvent event) {
        System.out.println("方式二：使用@EventListener注解 ");
        System.out.println("赠送新人优惠券给用户：" + event.getNickName());
    }
}

演示结果

http://127.0.0.1:8083/api/user/reg?userName=113.9526&nickName=22.5431

用户 22.5431 注册成功
发送欢迎邮件给用户：22.5431
方式二：使用@EventListener注解 
赠送新人优惠券给用户：22.5431