Spring State Machine Transitions

我試圖從其他觸發器轉換到自動狀態機（SM），但它不工作：初始操作（findCustomer（））應該改變SM的初始狀態，然後每個操作觸發事件等等到最終狀態。這裏是我的配置：Spring State Machine Transitions

@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); 
     }; 
    } 
}

來源

2017-05-15 Mohamed Moez MANSOURI

出了什麼問題？請提供[最小，完整且可驗證的示例]（https://stackoverflow.com/help/mcve）。 – Obenland

1- SM使用初始狀態CardStates.ACTIVE_STATUS實例化，但不觸發findCustomer（）操作。所以沒有任何反應：SM不會進化。 2-當我通過使用來自測試類的cardStateMachine.sendEvent（CardEvents.FIND_CUSTOMER）來觸發事件CardEvents.FIND_CUSTOMER時，調用findCustomer（）動作+ SM狀態更改，但是context.getStateMachine（）。sendEvent（CardEvents。 CUSTOMER_FOUND）;沒有考慮到：它應該調用findMobileCard（）動作，如其轉換中定義的那樣。 –

你有事件CardEvents.FIND_CUSTOMER爲CardStates.ACTIVE_STATUS到CardStates.CUSTOMER_FOUND。您從findCustomer()發送與CardEvents.FIND_CUSTOMER不同的事件CardEvents.CUSTOMER_FOUND。

改變這一點，我認爲它應該工作。想到，我個人更傾向於通過匿名轉換和選擇狀態來驅動automatic機器。

來源

2017-05-16 08:35:51

Spring State Machine Transitions

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