使用Unity,如何使用泛型接口自动注册泛型类,而不向其注册所有类型

Include方法具有重载,允许您传递lambda以注册类型。要使用属性实现您想要的效果,可以执行以下操作:

        unityContainer.ConfigureAutoRegistration()
            .Include(If.DecoratedWith<ActionAtribute>,
                     (t, c) => c.RegisterType(typeof(IAction<>).MakeGenericType(t), typeof(Action<>).MakeGenericType(t)))
            .IncludeAllLoadedAssemblies()
            .ApplyAutoRegistration();

另外,Include方法的第一个参数是谓词,所以如果您不想使用属性而是其他机制来定义要包含或排除的类型,可以这样做:

        // You may be getting these types from your config or from somewhere else
        var allowedActions = new[] {typeof(ObjectB)}; 
        unityContainer.ConfigureAutoRegistration()
            .Include(t => allowedActions.Contains(t),
                     (t, c) => c.RegisterType(typeof(IAction<>).MakeGenericType(t), typeof(Action<>).MakeGenericType(t)))
            .IncludeAllLoadedAssemblies()
            .ApplyAutoRegistration();