55 lines
1.4 KiB
Java
55 lines
1.4 KiB
Java
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package com.example.demo.event;
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import com.example.demo.model.UserEvent;
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import org.springframework.context.ApplicationEventPublisher;
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import org.springframework.stereotype.Component;
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import org.springframework.beans.factory.annotation.Autowired;
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/**
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* 事件发布器 - 演示如何发布事件
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*
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* 学习点：
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* - ApplicationEventPublisher 接口
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* - 依赖注入发布器
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* - 解耦：发布者不需要知道监听者
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*/
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@Component
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public class UserEventPublisher {
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@Autowired
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private ApplicationEventPublisher eventPublisher;
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/**
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* 发布用户事件
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*/
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public void publishEvent(UserEvent event) {
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System.out.println("[EventPublisher] 发布事件: " + event.getType() + " - " + event.getUserName());
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eventPublisher.publishEvent(event);
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}
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/**
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* 便捷方法：发布用户创建事件
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*/
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public void publishUserCreated(Long userId, String userName) {
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UserEvent event = new UserEvent(
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UserEvent.Type.CREATED,
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userId,
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userName,
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"新用户注册成功"
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);
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publishEvent(event);
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}
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/**
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* 便捷方法：发布用户登录事件
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*/
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public void publishUserLogin(Long userId, String userName) {
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UserEvent event = new UserEvent(
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UserEvent.Type.LOGIN,
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userId,
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userName,
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"用户登录成功"
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);
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publishEvent(event);
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}
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}
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