這是一個Web API 2項目。OwinStartup如何使用DI容器
當我使用Ninject DI實現,我得到一個錯誤信息
試圖創建類型的控制裝置「TokenController」時發生錯誤。確保控制器有一個無參數的公共構造函數。
[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);
}
}
當我添加<add key="owin:AutomaticAppStartup" value="false" />
到Web.config中
Ninject工作正常,但 Startup.OAuthBearerOptions.AccessTokenFormat變成空
如何使用DI容器OWIN?
UPDATE
實施的IDependencyResolver和使用的WebAPI依賴解析器如下
public void ConfigureWebApi(IAppBuilder app)
{
HttpConfiguration config = new HttpConfiguration();
config.DependencyResolver = new NinjectDependencyResolver(NinjectWebCommon.CreateKernel());
app.UseWebApi(config);
}
簡單的注射器情況下
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
是否有一個理由,爲什麼你不能一個空的構造函數添加到您的控制器? –
@NikolaiSamteladze我已經在空構造函數中實現了依賴注入,我只想知道如何在這種情況下使用DI容器 –
[有一個項目](https://github.com/DotNetDoodle/DotNetDoodle.Owin.Dependencies)它提供了這種支持,但是也許你必須自己編寫適配器,因爲它僅爲autofac提供了一個開箱即用的實現。 –