@Override
    public void setApplicationEventPublisher(ApplicationEventPublisher applicationEventPublisher) {
        this.applicationEventPublisher = applicationEventPublisher;
    }

package com.shg.service;
import com.baomidou.mybatisplus.extension.service.IService;
import com.shg.beans.User;
public interface UserService extends IService<User> {
    User addUser(User user);
}

        
package com.shg.service.impl;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.shg.beans.User;
import com.shg.listener.event.UserAddSuccessEvent;
import com.shg.mapper.UserMapper;
import com.shg.service.UserService;
import org.springframework.context.ApplicationEventPublisher;
import org.springframework.context.ApplicationEventPublisherAware;
import org.springframework.stereotype.Service;
@Service("userService")
public class UserServiceImpl extends ServiceImpl<UserMapper, User> implements UserService, ApplicationEventPublisherAware {
    private ApplicationEventPublisher applicationEventPublisher;
    private final UserMapper userMapper;
    public UserServiceImpl(UserMapper userMapper) {
        this.userMapper = userMapper;
    }
    @Override
    public User addUser(User user) {
        userMapper.insert(user);
        applicationEventPublisher.publishEvent(new UserAddSuccessEvent(this, user));
        return user;
    }
    @Override
    public void setApplicationEventPublisher(ApplicationEventPublisher applicationEventPublisher) {
        this.applicationEventPublisher = applicationEventPublisher;
    }
}

package com.shg.listener.event;
import com.shg.beans.User;
import org.springframework.context.ApplicationEvent;
public class UserAddSuccessEvent extends ApplicationEvent {
    private final User user;
    public UserAddSuccessEvent(Object source, User user) {
        super(source);
        this.user = user;
    }
    public User getUser() {
        return user;
    }
}

package com.shg.listener;
import com.shg.listener.event.UserAddFailEvent;
import com.shg.listener.event.UserAddSuccessEvent;
import lombok.extern.slf4j.Slf4j;
import org.springframework.context.event.EventListener;
import org.springframework.stereotype.Component;
// 實(shí)現(xiàn)ApplicationListener接口的方式
// @Slf4j
// @Component
// public class UserAddListener implements ApplicationListener<UserAddSuccessEvent> {
//     @Override
//     public void onApplicationEvent(UserAddSuccessEvent event) {
//         log.info("創(chuàng)建用戶：{}, 成功，已發(fā)送短信給管理員...", event.getUser());
//     }
// }
// 使用@EventListener的方式
@Slf4j
@Component
public class UserAddListener {
    @EventListener(value = {UserAddSuccessEvent.class})
    public void listenerUserAddSuccessEvent(UserAddSuccessEvent event) {
        log.info("創(chuàng)建用戶：{}, 成功，已發(fā)送短信給管理員...", event.getUser());
    }
}