在Autofac中是否有办法注册一个带有工厂委托的类型,该委托在请求该类型时被调用? 像这样:
builder.RegisterType<MyType>().AsSelf()
.WithFactory((IMyService s, ISomeDependency d) =>
{
var p1 = s.DoSomething();
var p2 = d.DoSomething(p1, true);
return new MyType(p1, p2);
});
答案 0 :(得分:2)
这可能不是你期望的,但确实可以解决问题:
builder.Register<MyType>(container =>
{
var s = container.Resolve<IMyService>();
var d = container.Resolve<ISomeDependency>();
var p1 = s.DoSomething();
var p2 = d.DoSomething(p1, true);
return new MyType(p1, p2);
});
或者如果你想使用自动(构造函数)注入,你可以创建一个MyType
子类(在Composition Root内),它接受两个依赖项。这种类型很容易注册:
builder.RegisterType<AutofacMyType().As<MyType>();
// Define inside Composition Root
private sealed class AutofacMyType : MyType
{
public AutofacMyType(IMyService s, ISomeDependency d)
: this(s.DoSomething(), d) { }
private AutofacMyType(Something p1, ISomeDependency d)
: base(p1, d.DoSomething(p1, true)) { }
}