当使用Autofac注册并解析泛型服务时,有时会遇到无法解析的问题。以下是一些可能的解决方法,包含代码示例:
builder.RegisterGeneric(typeof(MyGenericService<>))
.As(typeof(IGenericService<>))
.InstancePerLifetimeScope();
var service = container.Resolve>();
Resolve>()
来解析所有实现:var services = container.Resolve>>();
ResolveKeyed(object serviceKey)
来选择性解析:var service = container.ResolveKeyed>("MyServiceKey");
builder.RegisterType().As();
builder.RegisterGeneric(typeof(MyGenericService<>))
.As(typeof(IGenericService<>))
.WithParameter(new TypedParameter(typeof(IDependency), new Dependency()))
.InstancePerLifetimeScope();
RegisterCallback
来查看Autofac的注册信息和解析过程:builder.RegisterCallback(cr =>
{
cr.Registered += (sender, args) =>
{
Console.WriteLine($"Registered: {args.ComponentRegistration}");
};
cr.ResolveOperationBeginning += (sender, args) =>
{
Console.WriteLine($"Resolving: {args.ComponentRegistration}");
};
cr.ResolveOperationEnding += (sender, args) =>
{
Console.WriteLine($"Resolved: {args.Instance}");
};
});
通过检查注册和解析过程中的代码,并参考上述解决方法,通常可以解决Autofac无法解析泛型服务的问题。
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