利用Spring Boot框架做事件发布和监听

一、编写事件

1.编写事件类并集成spring boot 事件接口，提供访问事件参数属性

public class PeriodicityRuleChangeEvent extends ApplicationEvent {private final JwpDeployWorkOrderRuleDTO jwpDeployWorkOrderRuleDTO;public PeriodicityRuleChangeEvent(Object source, JwpDeployWorkOrderRuleDTO jwpDeployWorkOrderRuleDTO) {super(source);this.jwpDeployWorkOrderRuleDTO = jwpDeployWorkOrderRuleDTO;}public JwpDeployWorkOrderRuleDTO getJwpDeployWorkOrderRuleDTO() {return jwpDeployWorkOrderRuleDTO;}}

二、编写监听类（必须写明监听事件类型，重写监听到事件后，处理方法）

@Component
public class PeriodicityRuleListener implements ApplicationListener<PeriodicityRuleChangeEvent> {@Autowiredprivate PeriodicityCreateProcessServiceImpl periodicityCreateProcessServiceImpl;@Overridepublic void onApplicationEvent(PeriodicityRuleChangeEvent periodicityRuleChangeEvent) {periodicityCreateProcessServiceImpl.addTask(periodicityRuleChangeEvent.getJwpDeployWorkOrderRuleDTO());}}

三、发布事件

@compnent
public class PeriodicityStartProcessService {@Autowiredprivate ApplicationEventPublisher publisher;private void triggerEvent(JwpDeployWorkOrderRuleDTO jwpDeployWorkOrderRuleDTO) {PeriodicityRuleChangeEvent periodicityRuleChangeEvent = new PeriodicityRuleChangeEvent(this, jwpDeployWorkOrderRuleDTO);publisher.publishEvent(periodicityRuleChangeEvent);}}