applicationPublish、eventListener实现java后端异步demo

最新推荐文章于 2025-03-10 23:54:40 发布

原创最新推荐文章于 2025-03-10 23:54:40 发布 · 264 阅读

1 ·

CC 4.0 BY-SA版权

文章标签：

#event #spring

java 同时被 2 个专栏收录

74 篇文章

订阅专栏

springboot

20 篇文章

订阅专栏

本文介绍了如何在Spring Boot应用中创建自定义事件`DemoEvent`，通过`@RestController`实现事件发布，并通过`@Component`监听器处理事件。重点展示了`DemoEventListener`如何捕获并操作`DemoEvent`中的`UserInfo`对象。

发送事件

public class DemoEvent extends ApplicationEvent {

    @Getter
    private UserInfo userInfo;

    public DemoEvent(UserInfo source) {
        super(source);
        userInfo = source;
    }
}

@RestController
@RequestMapping(path = {"/api/hz/demoEvent"})
public class DemoEventController {

    @RequestMapping(path = "/event", method = {RequestMethod.POST,RequestMethod.GET}, produces = "application/json;charset=UTF-8")
    public Response demo(){
        UserInfo info = new UserInfo();
        info.setName("dage");
        DemoEvent demoEvent = new DemoEvent(info);
        SpringContextHelper.getApplicationContext().publishEvent(demoEvent);
        return Response.OK;
    }
}

监听事件

@Component
public class DemoEventListener implements ApplicationListener<DemoEvent> {
    @Override
    public void onApplicationEvent(DemoEvent demoEvent) {
        UserInfo userInfo = demoEvent.getUserInfo();
        System.out.println(userInfo.getName());
    }
}