java - Spring 状态机转换

Question

我试图触发其他状态机的转换以进行自动状态机(SM)，但它不起作用:初始操作(findCustomer())应该更改SM的初始状态，然后每个操作都会触发一个事件并依此类推直到最终状态。这是我的配置:

    @Configuration @EnableStateMachine public class CardStateMachineConfig extends EnumStateMachineConfigurerAdapter<CardStates, CardEvents> {


    final private static Logger logger = LoggerFactory.getLogger(CardStateMachineConfig.class);

    @Override
    public void configure(StateMachineStateConfigurer<CardStates, CardEvents> states) throws Exception {
        states.withStates().initial(CardStates.ACTIVE_STATUS).state(CardStates.ACTIVE_STATUS, findCustomer(), null)
                .states(EnumSet.allOf(CardStates.class));

    }

    // @formatter:off
    @Override
    public void configure(StateMachineTransitionConfigurer<CardStates, CardEvents> transitions) throws Exception {




         transitions.withExternal().source(CardStates.ACTIVE_STATUS).target(CardStates.CUSTOMER_FOUND).event(CardEvents.FIND_CUSTOMER).action(findCustomer())
                 .and().withExternal()
         .source(CardStates.CUSTOMER_FOUND).target(CardStates.MOBILECARD_FOUND).event(CardEvents.CUSTOMER_FOUND).action(findMobileCard())
                 .and().withExternal()
         .source(CardStates.FIND_MOBILECARD_FOUND).target(CardStates.WIRECARD_LOCKED_CARD).event(CardEvents.MOBILE_CARD_FOUND).action(wirecardLockCard());


    }

    // @formatter:on
    @Override public void configure(StateMachineConfigurationConfigurer<CardStates, CardEvents> config)
            throws Exception {
        config.withConfiguration().autoStartup(true).listener(new MobileCardBlockProcessEventHandler());
    }

    @Bean public Action<CardStates, CardEvents> findCustomer() {

        return (context) -> {
            context.getStateMachine().sendEvent(CardEvents.CUSTOMER_FOUND);
        };

    }

    @Bean public Action<CardStates, CardEvents> findMobileCard() {

        return (context) -> {
            context.getStateMachine().sendEvent(CardEvents.MOBILE_CARD_FOUND);
        };
    }
}

Answer 1

您有针对 CardStates.ACTIVE_STATUS 到 CardStates.CUSTOMER_FOUND 的事件 CardEvents.FIND_CUSTOMER。从 findCustomer() 中，您发送事件 CardEvents.CUSTOMER_FOUND，该事件与 CardEvents.FIND_CUSTOMER 不同。

改变它，我认为它应该有效。我个人认为，我更喜欢通过匿名转换和选择状态来驱动自动机器。