c# - OwinStartup时如何使用DI容器

Question

这是一个 Web API 2 项目。

当我使用 Ninject 实现 DI 时，我收到一条错误消息

尝试创建“TokenController”类型的 Controller 时发生错误。确保 Controller 具有无参数公共(public)构造函数。

[assembly: OwinStartup(typeof(Web.Startup))]

namespace Web
{
    public partial class Startup
    {
        public void Configuration(IAppBuilder app)
        {
            ConfigureAuth(app);
            ConfigureWebApi(app);
        }
    }
}

public class TokenController : ApiController
{

    private IUserService _userService;

    public TokenController(IUserService userService)
    {
        this._userService = userService;
    }

    [Route("api/Token")]
    public HttpResponseMessage PostToken(UserViewModel model)
    {
        if (_userService.ValidateUser(model.Account, model.Password))
        {
            ClaimsIdentity identity = new ClaimsIdentity(Startup.OAuthBearerOptions.AuthenticationType);
            identity.AddClaim(new Claim(ClaimTypes.Name, model.Account));
            AuthenticationTicket ticket = new AuthenticationTicket(identity, new AuthenticationProperties());
            var currentUtc = new SystemClock().UtcNow;
            ticket.Properties.IssuedUtc = currentUtc;
            ticket.Properties.ExpiresUtc = currentUtc.Add(TimeSpan.FromMinutes(30));
            return new HttpResponseMessage(HttpStatusCode.OK)
            {
                Content = new ObjectContent<object>(new
                {
                    UserName = model.Account,
                    AccessToken = Startup.OAuthBearerOptions.AccessTokenFormat.Protect(ticket)
                }, Configuration.Formatters.JsonFormatter)
            };
        }

        return new HttpResponseMessage(HttpStatusCode.BadRequest);
    }
}

当我添加 <add key="owin:AutomaticAppStartup" value="false" /> 时到 web.config

Ninject 工作正常，但是 Startup.OAuthBearerOptions.AccessTokenFormat 变为 null

如何在 OWIN 中使用 DI 容器？

更新

实现 IDependencyResolver 并使用 WebAPI 依赖解析器，如下所示

public void ConfigureWebApi(IAppBuilder app)
{
    HttpConfiguration config = new HttpConfiguration();

    config.DependencyResolver = new NinjectDependencyResolver(NinjectWebCommon.CreateKernel());

    app.UseWebApi(config);
}

NinjectDependencyResolver

---

在简单的注入(inject)器案例中

public void ConfigureWebApi(IAppBuilder app)
{
    HttpConfiguration config = new HttpConfiguration();

    var container = new Container();
    container.Register<IUserService, UserService>();
    config.DependencyResolver = new SimpleInjectorWebApiDependencyResolver(container);

    app.UseWebApi(config);
}

SimpleInjectorWebApiDependencyResolver

Answer 1

您可能想看看 this blog post .

它使用的是 Unity，但最终应该是一样的。

基本上，使用 WebAPI 依赖项解析器。确保一切都正确映射，应该没问题。

如果在设置 DI 后您的 OAuth token 仍然有问题，请告诉我。

干杯