interface use spring bean 方案_interface里可以注入bean吗-优快云博客

本文链接：https://blog.youkuaiyun.com/Cons_Step_By_Step/article/details/78644634

本文探讨了在Spring框架中如何避免直接在接口中使用Spring Bean，并提供了一种通过创建辅助类来管理不同事件类型处理器的方法。介绍了如何利用依赖注入初始化各个事件处理器，并通过静态方法获取合适的子处理器。

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首先不建议在interface中使用spring bean。
建议可以重新建一个bean去处理。如果用c++角度来理解的话spring aoc容器就是c++中的一个全局的静态变量，这大概相当于c++中extern吧。

public interface IEventBaseHandler {

EntityBaseVO getAndSaveEventDetailBy(EventMasterVO eventMasterVO) ;

static IEventBaseHandler GetSubHandler(Integer eventTypeNum){
    return IEventBaseHandlerHelper.GetSubHandler(eventTypeNum);
}



@Component
class IEventBaseHandlerHelper{
    private static IIntercomEventHandler intercomEventHandlerImpl;
    private static IButtonEventHandler buttonEventHandlerImpl;
    private static IPerimeterEventHandler perimeterEventHandlerImpl;
    private static IGateEventHandler gateEventHandlerImpl;
    private static IVehicleEventHandler vehicleEventHandlerImpl;
    private static IFaceEventHandler faceEventHandlerImpl;
    @Autowired
    public void setIntercomEventHandlerImpl(IIntercomEventHandler intercomEventHandlerImpl){
        this.intercomEventHandlerImpl = intercomEventHandlerImpl;
    }
    @Autowired
    public void setButtonEventHandlerImpl(IButtonEventHandler buttonEventHandlerImpl){
        this.buttonEventHandlerImpl = buttonEventHandlerImpl;
    }
    @Autowired
    public void setPerimeterEventHandlerImpl(IPerimeterEventHandler perimeterEventHandlerImpl){
        this.perimeterEventHandlerImpl = perimeterEventHandlerImpl;
    }
    @Autowired
    public void setGateEventHandlerImpl(IGateEventHandler gateEventHandlerImpl){
        this.gateEventHandlerImpl = gateEventHandlerImpl;
    }
    @Autowired
    public void setVehicleEventHandlerImpl(IVehicleEventHandler vehicleEventHandlerImpl){
        this.vehicleEventHandlerImpl = vehicleEventHandlerImpl;
    }
    @Autowired
    public void setFaceEventHandlerImpl(IFaceEventHandler faceEventHandlerImpl){
        this.faceEventHandlerImpl = faceEventHandlerImpl;
    }

static IEventBaseHandler GetSubHandler(Integer eventTypeNum){
    if(EventTypeEnum.DUIJIANG.getIndex() == eventTypeNum) {
        return intercomEventHandlerImpl;
    } else if(EventTypeEnum.BUTTON.getIndex() == eventTypeNum) {
        return buttonEventHandlerImpl;
    } else if(EventTypeEnum.ZHOUJIE.getIndex() == eventTypeNum) {
        return perimeterEventHandlerImpl;
    } else if(EventTypeEnum.MENJIN.getIndex() == eventTypeNum) {
        return gateEventHandlerImpl;
    } else if(EventTypeEnum.CHELIANG.getIndex() == eventTypeNum) {
        return vehicleEventHandlerImpl;
    } else if(EventTypeEnum.RENLIAN.getIndex() == eventTypeNum) {
        return faceEventHandlerImpl;
    }
    return null;
}

}