如何在 ASP.Net 中成功设置 Owin 身份验证？

Question

过去 1 天，我正在尝试为基于 api 的项目设置基于令牌的身份验证。

使用以下链接作为起点。
http://www.c-sharpcorner.com/UploadFile/736ca4/token-based-authentication-in-web-api-2/

但我有点困惑并遇到错误。

Startup.cs（位于类库项目中）

public class Startup
{
    public void Configuration(IAppBuilder app)
    {
        var oauthProvider = new OAuthAuthorizationServerProvider
        {
            OnGrantResourceOwnerCredentials = async context =>
                {
                        var claimsIdentity = new ClaimsIdentity(context.Options.AuthenticationType);
                        claimsIdentity.AddClaim(new Claim("user", context.UserName));
                        context.Validated(claimsIdentity);
                        return;
                     //context.Rejected();
                },

            OnValidateClientAuthentication = async context =>
                {
                    string clientId;
                    string clientSecret;
                    if(context.TryGetBasicCredentials(out clientId, out clientSecret))
                    {
                        if(clientId == context.ClientId && clientSecret == "secretKey")
                        {
                            context.Validated();
                        }
                    }
                }
        };

        var oauthOptions = new OAuthAuthorizationServerOptions
        {
            AllowInsecureHttp = true,
            TokenEndpointPath = new PathString("/accesstoken"),
            Provider = oauthProvider,
            AuthorizationCodeExpireTimeSpan = TimeSpan.FromMinutes(1),
            AccessTokenExpireTimeSpan = TimeSpan.FromMinutes(3),
            SystemClock = new SystemClock()

        };

        app.UseOAuthAuthorizationServer(oauthOptions);
        app.UseOAuthBearerAuthentication(new OAuthBearerAuthenticationOptions());

        var config = new HttpConfiguration();
        config.MapHttpAttributeRoutes();
        app.UseWebApi(config);  
    }
}

API 控制器

[AcceptVerbs("POST")]
    [HttpPost]
    public string Post([FromBody]User user)
    {
        if(user.Username == "chetan" && user.Password == "pwd")
        {
            HttpClient client = new HttpClient();
            OAuth.InitOAuth(client, user.Username, user.Password);
            return "Success!!User valid for token";
        }
        else
        {
            return "Error!! User invalid";
        }
    }

我的 OAuth 类

public class OAuth
{
    public static void InitOAuth(HttpClient client, string userName, string password)
    {
        string baseAddress = "http://localhost:9000/";
        // GETTING THE ERROR AT THIS LINE
        using (WebApp.Start<Startup>(url: baseAddress))
        {
            var form = new Dictionary<string, string>  
           {  
               {"grant_type", "password"},  
               {"username", userName },  
               {"password", password},  
           };

            var tokenResponse = client.PostAsync(baseAddress + "accesstoken", new FormUrlEncodedContent(form)).Result;
            var token = tokenResponse.Content.ReadAsAsync<Token>(new[] { new JsonMediaTypeFormatter() }).Result;
            client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token.AccessToken);

        }
    }
}

错误：-

无法加载文件或程序集“Microsoft.Owin，Version=2.0.2.0，Culture=neutral，PublicKeyToken=31bf3856ad364e35”或其依赖项之一。找到的程序集的清单定义与程序集引用不匹配。 （HRESULT 异常：0x80131040）

在谷歌上我得到了几个链接并安装了以下软件包：-

 Install-package Microsoft.Owin.Host.HttpListener

Web.Config

<dependentAssembly>
    <assemblyIdentity name="Microsoft.Owin" publicKeyToken="Secretkey" culture="neutral" />
    <bindingRedirect oldVersion="0.0.0.0-3.0.1.0" newVersion="3.0.1.0" />
  </dependentAssembly>

我在这里缺少什么？

非常感谢任何帮助或建议。 谢谢。

Answer 1

也许问题是：

publicKeyToken="Secretkey" 

你已经尝试改变：

<dependentAssembly>
    <assemblyIdentity name="Microsoft.Owin" publicKeyToken="31bf3856ad364e35" />
    <bindingRedirect oldVersion="0.0.0.0-3.0.1.0" newVersion="3.0.1.0" />
</dependentAssembly>