Question

我下载了Unity.MVC 5.9.2，但是我的控制器遇到了我需要的新依赖项时遇到了问题。根据我的读物，我要做的就是在RegisterTypes方法中注册类型，其余的由Unity负责

我收到的错误：

无法为System.String选择构造函数说明：执行当前Web请求期间发生未处理的异常。请查看堆栈跟踪，以获取有关错误及其在代码中起源的更多信息。

异常详细信息：System.InvalidOperationException：无法为System.String选择构造函数

我已经阅读了所有相关教程，但仍然不知道我在这里缺少什么

代码：

/// <summary>
/// Specifies the Unity configuration for the main container.
/// </summary>
public static class UnityConfig
{
    #region Unity Container
    private static Lazy<IUnityContainer> container =
      new Lazy<IUnityContainer>(() =>
      {
          var container = new UnityContainer();
          RegisterTypes(container);
          return container;
      });

    /// <summary>
    /// Configured Unity Container.
    /// </summary>
    public static IUnityContainer Container => container.Value;
    #endregion

    /// <summary>
    /// Registers the type mappings with the Unity container.
    /// </summary>
    /// <param name="container">The unity container to configure.</param>
    /// <remarks>
    /// There is no need to register concrete types such as controllers or
    /// API controllers (unless you want to change the defaults), as Unity
    /// allows resolving a concrete type even if it was not previously
    /// registered.
    /// </remarks>
    public static void RegisterTypes(IUnityContainer container)
    {
        // NOTE: To load from web.config uncomment the line below.
        // Make sure to add a Unity.Configuration to the using statements.
        // container.LoadConfiguration();

        // TODO: Register your type's mappings here.
        container.RegisterType<ILoader, Loader>();
    }
}

public class SomeController : Controller
{
    private ILoader _loader;
    public SomeController (ILoader loader)
    {
        _loader = loader;
    }
    [HttpGet]
    public async Task<ActionResult> GetBatches()
    {
        try
        {
            return Json("", JsonRequestBehavior.AllowGet);
        }
        catch (Exception e)
        {
            return new HttpStatusCodeResult(HttpStatusCode.ServiceUnavailable, "Unable to get batches for recurring mail.");
        }
    }
}

    protected void Application_Start()
    {
        AreaRegistration.RegisterAllAreas();
        UnityConfig.RegisterTypes(UnityConfig.Container);
        FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
        RouteConfig.RegisterRoutes(RouteTable.Routes);
        BundleConfig.RegisterBundles(BundleTable.Bundles);
    }

public static class UnityMvcActivator
{
    /// <summary>
    /// Integrates Unity when the application starts.
    /// </summary>
    public static void Start() 
    {
        FilterProviders.Providers.Remove(FilterProviders.Providers.OfType<FilterAttributeFilterProvider>().First());
        FilterProviders.Providers.Add(new UnityFilterAttributeFilterProvider(UnityConfig.Container));

        DependencyResolver.SetResolver(new UnityDependencyResolver(UnityConfig.Container));

        // TODO: Uncomment if you want to use PerRequestLifetimeManager
        // Microsoft.Web.Infrastructure.DynamicModuleHelper.DynamicModuleUtility.RegisterModule(typeof(UnityPerRequestHttpModule));
    }

    /// <summary>
    /// Disposes the Unity container when the application is shut down.
    /// </summary>
    public static void Shutdown()
    {
        UnityConfig.Container.Dispose();
    }
}

Unity MVC Controller构造函数未受到攻击

0 个答案: