Unity.ResolutionFailedException - 依赖项的解析失败

Question

我有以下代码:

 public static IEngine CreateEngine()
    {
        UnityContainer container = Unity.LoadUnityContainer(DefaultStrategiesContainerName);
        IEnumerable<IStrategy> strategies = container.ResolveAll<IStrategy>();
        ITraderProvider provider = container.Resolve<ITraderProvider>();

        return new Engine(provider, new List<IStrategy>(strategies));
    }

和配置:

<unity>  <typeAliases>
<typeAlias alias="singleton" type="Microsoft.Practices.Unity.ContainerControlledLifetimeManager, Microsoft.Practices.Unity" />
<typeAlias alias="weakRef" type="Microsoft.Practices.Unity.ExternallyControlledLifetimeManager, Microsoft.Practices.Unity" />
<typeAlias alias="Strategy" type="ADTrader.Core.Contracts.IStrategy, ADTrader.Core" />
<typeAlias alias="Trader" type="ADTrader.Core.Contracts.ITraderProvider, ADTrader.Core" />  </typeAliases>  <containers>
<container name="strategies">
  <types>
    <type type="Strategy" mapTo="ADTrader.Strategies.ThreeTurningStrategy, ADTrader.Strategies" name="1" />
    <type type="Trader" mapTo="ADTrader.MbTradingProvider.MBTradingProvider, ADTrader.MbTradingProvider" />
  </types>
</container>  </containers></unity>

我收到以下异常:

Microsoft.Practices.Unity.ResolutionFailedException:依赖项的解析失败,type ="ADTrader.Core.Contracts.ITraderProvider",name ="".异常消息是:当前构建操作(构建密钥构建密钥[ADTrader.MbTradingProvider.MBTradingProvider,null])失败:尝试读取或写入受保护的内存.这通常表明其他内存已损坏.(策略类型BuildPlanStrategy,索引3)---> Microsoft.Practices.ObjectBuilder2.BuildFailedException:当前构建操作(构建密钥构建密钥[ADTrader.MbTradingProvider.MBTradingProvider,null])失败:尝试读取或写入受保护的内存.这通常表明其他内存已损坏.(策略类型BuildPlanStrategy,索引3)---> System.AccessViolationException:尝试读取或写入受保护的内存.这通常表明其他内存已损坏.在MBTCOMLib.MbtComMgrClass.EnableSplash(布尔bEnable)在ADTrader.MbTradingProvider.MBTradingProvider..ctor()在BuildUp_ADTrader.MbTradingProvider.MBTradingProvider(IBuilderContext)在Microsoft.Practices.ObjectBuilder2.DynamicMethodBuildPlan.BuildUp(IBuilderContext上下文)在Microsoft.Practices.ObjectBuilder2 Microsoft.Practices.ObjectBuilder2.StrategyChain.ExecuteBuildUp(IBuilderContext context)中的.BuildPlanStrategy.PreBuildUp(IBuilderContext context)--- Microsoft的Microsoft.Practices.ObjectBuilder2.StrategyChain.ExecuteBuildUp(IBuilderContext context)的内部异常堆栈跟踪结束.Practices.ObjectBuilder2.Builder.BuildUp(IReadWriteLocator定位器,
在Microsoft.Practices.Unity.UnityContainer.DoBuildUp(类型t,对象存在,字符串名称)中的Microsoft.Practices.Unity.UnityContainer.Resolve(类型t,字符串名称),位于ADTrader的Microsoft.Practices.Unity.UnityContainerBase.ResolveT. Engine.EngineFactory.CreateEngine()

任何的想法？

Answer 1

您的构造函数MbTradingProvider.MBTradingProvider调用 COM 对象上的方法（从名称来看）MBTCOMLib.MbtComMgrClass.EnableSplash。这个方法有一个bug，会导致写入错误的内存地址。