知识点

Spring Boot 异步事件 Event

异步事件 Event

1. 定义事件类 Event

继承 ApplicationEvent

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public class OpLogEvent extends ApplicationEvent {
    public OpLogEvent(OpLog log) {
        super(log);
        this.log = log;
    }
    
    private OpLog log;
}

2. 创建事件监听类 Listener

实现 ApplicationListener 接口

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@Component
public class OpLogService implements ApplicationListener<OpLogEvent> {
    
    @Autowired
    OpLogMapper opLogMapper;
    
    @Override
    public void onApplicationEvent(OpLogEvent event) {
        OpLog entity = event.getLog();
        opLogMapper.insert(entity);
    }
}

3. 事件发布

在需要的地方调用 ApplicationEventPublisher 或 ApplicationContext 的方法 publishEvent

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OpLogEvent event = new OpLogEvent(log);
applicationContext.publishEvent(event);