spring 监听器

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本文介绍如何在Spring框架中创建自定义事件UploadCloudEvent并实现事件监听器UploadCloudHandle。通过继承ApplicationEvent创建事件，并利用SpringContextUtil获取ApplicationContext来发布事件。监听器通过ApplicationListener接口实现对事件的响应。

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1.创建事件继承ApplicationEvent

public class UploadCloudEvent extends ApplicationEvent {
public static int UPLOAD_TYPE = 1;
private static final long serialVersionUID = 1L;

public UploadCloudEvent(Map<String, Object> map) {
super(map);
}

//对外调用方法
public static void push(Map<String, Object> map) {
SpringContextUtil.getApplicationContext().publishEvent(new UploadCloudEvent(map));
}

public static void pushVideo(int id, String uploadPath) {

}

2.监听器实现ApplicationListener

@Component
public class UploadCloudHandle implements ApplicationListener<UploadCloudEvent> {
Logger logger = LoggerFactory.getLogger(UploadCloudHandle.class);

public UploadCloudHandle() {
}

@Async
public void onApplicationEvent(UploadCloudEvent event) {
//......实现相关功能

}
}
}