正如标题所说,当我还配置了命名实例时,structuremap不会返回默认实例。
这是我的类型注册:
/// <summary>
/// Initializes a new instance of the <see cref="CommandProcessingTypeRegistry"/> class.
/// </summary>
public CommandProcessingTypeRegistry()
{
For<ICommandProcessor>().Singleton().Use<CommandCoordinator>();
For<ICommandProcessor>().Singleton().Use<SystemCommandSwitch>().Named(typeof(SystemCommandSwitch).FullName);
For<ICommandProcessor>().Singleton().Use<TelephonyCommandSwitch>().Named(typeof(TelephonyCommandSwitch).FullName);
For<ICommandProcessor>().Singleton().Use<AudioCommandSwitch>().Named(typeof(AudioCommandSwitch).FullName);
For<ICommandProcessor>().Singleton().Use<TetraCommandSwitch>().Named(typeof(TetraCommandSwitch).FullName);
For<ICommandProcessor>().Singleton().Use<RadioCommandSwitch>().Named(typeof(RadioCommandSwitch).FullName);
For<ICommandProcessor>().Singleton().Use<SnapshotCommandSwitch>().Named(typeof(SnapshotCommandSwitch).FullName);
For<ICommandProcessor>().Singleton().Use<TakeNextCommandSwitch>().Named(typeof(TakeNextCommandSwitch).FullName);
}
这就是我请求实例的方式:
_commandProcessor = _container.GetInstance<ICommandProcessor>(); // _container is the structuremap IContainer instance
我希望上面的行返回 CommandCoordinator 实例,而是返回 TakeNextCommandSwitch 实例。 我在这做错了什么?
答案 0 :(得分:5)
您需要对命名实例使用Add而不是Use:
For<ICommandProcessor>().Singleton().Add<TelephonyCommandSwitch>().Named(typeof(TelephonyCommandSwitch).FullName);