如何在webapi中注入WebApi AccountController

Question

我有默认的构造器和构造函数，参数如下所示：

public class AccountController : ApiController
{
    private const string LocalLoginProvider = "Local";
    private ApplicationUserManager _userManager;
    public ISecureDataFormat<AuthenticationTicket> AccessTokenFormat { get; private set; }
    [Dependency]
    public IRepository Repository{ get; private set; }

    public AccountController()
    {
    }

    public AccountController(ApplicationUserManager userManager, ISecureDataFormat<AuthenticationTicket> accessTokenFormat)
    {
        _userManager = userManager;
        AccessTokenFormat = accessTokenFormat;
    }
}

我的统一配置是：

.RegisterType<DbContext, ApplicationDbContext>(new HierarchicalLifetimeManager())
.RegisterType<UserManager<ApplicationUser, int>, ApplicationUserManager>()                
.RegisterType<ApplicationDbContext>(new HierarchicalLifetimeManager())
.RegisterType<ApplicationUserManager>()

.RegisterType<ISecureDataFormat<AuthenticationTicket>, SecureDataFormat<AuthenticationTicket>>()
.RegisterType<ITextEncoder, Base64UrlTextEncoder>()
.RegisterType<IDataSerializer<AuthenticationTicket>, TicketSerializer>()
//.RegisterType<IDataProtector>(() => new DpapiDataProtectionProvider().Create("ASP.NET Identity"))

.RegisterType<IUserStore<ApplicationUser, int>, CustomUserStore>(new InjectionConstructor(typeof(ApplicationDbContext)))
.RegisterType<IAuthenticationManager>(new InjectionFactory(o => HttpContext.Current.GetOwinContext().Authentication))
.RegisterType<IOwinContext>(new InjectionFactory(o => HttpContext.Current.GetOwinContext()))
.RegisterType<IRepository, Repository>();

但问题是默认构造函数总是被调用。我阅读了taht的文章博客，但他们并没有讨论如何用构造函数来解决这种情况，并没有使用AccountController(ApplicationUserManager userManager, ISecureDataFormat<AuthenticationTicket> accessTokenFormat)

如果我要删除无参数构造函数，我将得到一个错误："An error occurred when trying to create a controller of type 'AccountController'. Make sure that the controller has a parameterless public constructor.",，有人可以帮助吗？

另外，我只有正常的ApiController，而且我也没有被注射：

public class MyController : ApiController
{
    [Dependency]
    public IRepository Repository { get; set; }

    public IHttpActionResult Get()
    {
        var test = Repository.GetSomething(); // Repository is null here always
    }
}

基于@IgorPashchuk的更新1建议现在MyController正在被注入。但AccoutController不是。我被删除了默认的构造函数，但仍然得到了错误。

UPDATE 2我通过取出第二个param来修改构造函数：

public class AccountController : ApiController
{
    private const string LocalLoginProvider = "Local";
    private ApplicationUserManager _userManager;

    [Dependency]
    public IRepository Repository{ get; private set; }

    public AccountController(ApplicationUserManager userManager)
    {
        _userManager = userManager;
    }
}

所以这样我就可以让它正常工作了。我理解这意味着Unity无法构造ISecureDataFormat<AuthenticationTicket>类型。我发布了关于这个问题的另一个问题，团结一致

Answer 1

应该删除无参数构造函数。

接下来，您需要配置一个自定义依赖解析器，它将基本包装您的联合容器。请参阅http://www.asp.net/web-api/overview/advanced/dependency-injection

在此之后，确保您注册了所有类型。例如，我没有看到ApplicationUserManager的注册。您正在注册UserManager<ApplicationUser, int>，而不是ApplicationUserManager，这是IoC容器将试图解决的问题。