Dependency injection 如何在具有构造函数mvc的类上使用Unity实现DI？

假设我有一个这样的接口和类

public interface ILienholderBusinessService
    {
        string GetCoverage(IList<PolicyVinRequest> InputList);
    }

public class LienholderBusinessService : ILienholderBusinessService
    {
        public ILienholderPolicySearchDataService LienholderPolicySearchDataService { get; set; }

        public LienholderBusinessService(ILienholderPolicySearchDataService  LienholderPolicySearchDataService )
        {
            this.LienholderPolicySearchDataService =LienholderPolicySearchDataService ;
        }
        public string GetCoverage(IList<PolicyVinRequest> InputList)
        {
            return "my string";

        }
    }

现在，当我尝试在MVC中实现unity时，我得到了如下错误

你缺什么类型的

---

如何在一个具有构造函数的类上使用Unity实现DI？您必须为所有需要解析具体类型的接口注册映射。根据发布的代码，这将是

ILienholderBusinessService

和

ILienholderPolicySearchDataService

：

container.RegisterType<ILienholderBusinessService, LienholderBusinessService>();
container.RegisterType<ILienholderPolicySearchDataService, LienholderPolicySearchDataService>();

container.RegisterType<ILienholderBusinessService, LienholderBusinessService>();
container.RegisterType<ILienholderPolicySearchDataService, LienholderPolicySearchDataService>();

container.RegisterType<ILienholderPolicySearchDataService, LienholderPolicySearchDataService>(
    new InjectionConstructor(typeof(IRepository<Policy>)));