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 {
 
    @Autowired
    private PeriodicityCreateProcessServiceImpl periodicityCreateProcessServiceImpl;
 
    @Override
    public void onApplicationEvent(PeriodicityRuleChangeEvent periodicityRuleChangeEvent) {
        periodicityCreateProcessServiceImpl.addTask(periodicityRuleChangeEvent.getJwpDeployWorkOrderRuleDTO());
    }
 
 
}

三、发布事件

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