Autofac創建實例的方法總結[轉]

1、InstancePerDependency

對每一個依賴或每一次調用創建一個新的唯一的實例。這也是默認的創建實例的方式。

官方文檔解釋：Configure the component so that every dependent component or call to Resolve() gets a new, unique instance (default.)

2、InstancePerLifetimeScope

在一個生命周期域中，每一個依賴或調用創建一個單一的共享的實例，且每一個不同的生命周期域，實例是唯一的，不共享的。

官方文檔解釋：Configure the component so that every dependent component or call to Resolve() within a single ILifetimeScope gets the same, shared instance. Dependent components in different lifetime scopes will get different instances.

3、InstancePerMatchingLifetimeScope

在一個做標識的生命周期域中，每一個依賴或調用創建一個單一的共享的實例。打了標識了的生命周期域中的子標識域中可以共享父級域中的實例。若在整個繼承層次中沒有找到打標識的生命周期域，則會拋出異常：DependencyResolutionException。

官方文檔解釋：Configure the component so that every dependent component or call to Resolve() within a ILifetimeScope tagged with any of the PRovided tags value gets the same, shared instance. Dependent components in lifetime scopes that are children of the tagged scope will share the parent's instance. If no appropriately tagged scope can be found in the hierarchy anDependencyResolutionExceptionis thrown.

4、InstancePerOwned

在一個生命周期域中所擁有的實例創建的生命周期中，每一個依賴組件或調用Resolve()方法創建一個單一的共享的實例，并且子生命周期域共享父生命周期域中的實例。若在繼承層級中沒有發現合適的擁有子實例的生命周期域，則拋出異常：DependencyResolutionException。

官方文檔解釋：Configure the component so that every dependent component or call to Resolve() within a ILifetimeScope created by an owned instance gets the same, shared instance. Dependent components in lifetime scopes that are children of the owned instance scope will share the parent's instance. If no appropriate owned instance scope can be found in the hierarchy anDependencyResolutionExceptionis thrown.

5、SingleInstance

每一次依賴組件或調用Resolve()方法都會得到一個相同的共享的實例。其實就是單例模式。

官方文檔解釋：Configure the component so that every dependent component or call to Resolve() gets the same, shared instance.

6、InstancePerHttpRequest

在一次Http請求上下文中,共享一個組件實例。僅適用于asp.net mvc開發。

官方文檔解釋：Share one instance of the component within the context of a single HTTP request.

轉載自：http://blog.csdn.net/dhx20022889/article/details/9061483