Question

我几乎拥有标准的Unity设置

ICardRepository：

public interface ICardRepository {
    Task<Card> Get(GetCardRequest request);
}

[DataContract]
public class GetCardRequest {
    [DataMember(IsRequired = true)]
    public int CardID { get; set; }
}

DbCardRepository：

public class DbCardRepository : CardCornerDbRepository, ICardRepository {
    public DbCardRepository(IDbConfig config) : base(config) {
    }

    public async Task<Card> Get(GetCardRequest request) {
        try {
            return await ExecuteGetRequestAsync<Card>(request, "p_CardsTest");
        } catch (Exception ex) {
            throw;
        }
    }

Web.Config中：

<configuration>
  <configSections>
    ...
    <section name="unity" type="Microsoft.Practices.Unity.Configuration.UnityConfigurationSection, Microsoft.Practices.Unity.Configuration" />
  </configSections>
  <connectionStrings>
    <add name="System" providerName="System.Data.SqlClient"
          connectionString="Data Source=(localdb)\\MSSQLLocalDB;Initial Catalog=CardCorner;Integrated Security=True;Connect Timeout=30;Encrypt=False;TrustServerCertificate=True;ApplicationIntent=ReadWrite;MultiSubnetFailover=False" />
  </connectionStrings>
  <unity xmlns="http://schemas.microsoft.com/practices/2010/unity">
    <container>
      <register type="CardCorner.Data.ICardRepository, CardCorner.Data" mapTo="CardCorner.Data.SqlClient.DbCardRepository, CardCorner.Data.SqlClient" />
    </container>
  </unity>
...

UnityConfig.cs

namespace CardCorner.App_Start
{
public class UnityConfig
{
    #region Unity Container
    private static Lazy<IUnityContainer> container = new Lazy<IUnityContainer>(() =>
    {
        var container = new UnityContainer();
        RegisterTypes(container);
        return container;
    });

    public static IUnityContainer GetConfiguredContainer()
    {
        return container.Value;
    }
    #endregion

    public static void RegisterTypes(IUnityContainer container)
    {
        container.LoadConfiguration();

        var config = ConfigurationManager.ConnectionStrings["System"];

        container.RegisterInstance<IDbConfig>(new DbConfigProvider(config.ConnectionString, config.ProviderName));
        container.RegisterInstance<IDependancyResolver>(new CardCornerUIDependancyResolver());
    }
}

public class CardCornerUIDependancyResolver : IDependancyResolver {
    public object Resolve(Type type) {
        return UnityConfig.GetConfiguredContainer().Resolve(type);
    }

    public T Resolve<T>() {
        return UnityConfig.GetConfiguredContainer().Resolve<T>();
    }
}

public class DbConfigProvider : IDbConfig {
    private readonly String _connectionString;
    private readonly String _providerName;

    public DbConfigProvider(String connectionString, String providerName) {
        this._connectionString = connectionString;
        this._providerName = providerName;
    }

    public string ConnectionString {
        get {
            return _connectionString;
        }
    }

    public string ProviderName {
        get {
            return _providerName;
        }
    }
}
}

UnityMvcActivator是如何出现的。这应该是所需要的一切，但如果没有，请问。然后我尝试使用它......

HomeController中：

private ICardRepository cardRepository;

public HomeController(ICardRepository cardRepository) {
        this.cardRepository = cardRepository;
        ...

它抛出了这个错误：

Error

我使用过卡片作为例子，但它们大致相同。看起来第二个错误只是因为第一个错误。我是Unity的新手，并不知道映射失败的原因。任何帮助将不胜感激。

使用Web.Config Not Mapping进行Unity依赖注入

0 个答案: