Question

我打算通过我的Web项目通过IdentityServer4获得一个承载令牌，并且遇到了这个异常。 IdentityServer4开源类库中有一个例外。字段url为null，这会在AddQueryString方法中导致NullReference异常，请参见https://github.com/IdentityServer/IdentityServer4/blob/master/src/Extensions/StringsExtensions.cs

显示日志文件；

IdentityServer4.Endpoints.AuthorizeEndpoint：信息：ValidatedAuthorizeRequest   {     “ ClientId”：“ SIR”，     “ ClientName”：“ SIR”，     “ RedirectUri”：“ http://localhost:53200/signin-oidc”，     “ AllowedRedirectUris”：[       “ https://localhost:44314”，       “ http://localhost:53200/signin-oidc”     ]，     “ SubjectId”：“匿名”，     “ ResponseType”：“代码id_token”，     “ ResponseMode”：“ form_post”，     “ GrantType”：“混合”，     “ RequestedScopes”：“ openid个人资料”，     “国”： “OpenIdConnect.AuthenticationProperties = WBfqf-a6W0K-0x6giakJP1GCkjUyG0wzOgAr9AuitPNyUb6wsIlzJN-Yvv-ARRdTd5huJIIl3N0mpI95EbLzGKIVmAhXr4JiIWKo2dOCTFI7PH218T9V1vVkKP3kFmQgtRRYRagG9YEA2PvyMtxzQXMf4v3pPequ8Am7H_8TIfgMqspxAnTsXQ4K-cD_TBTVFc45AiDiylpWup1_Ovrpqu700JCGimHZJRuXP25MHMs”     “ Nonce”：“ 636809130138863279.M2IyNTYyZTgtZTk0Ni00OWU5LWI4MmMtNGU2MWY4M2FkMzQzNzExYjRjYjYtOWY4MC00NjQwLWEyZGYtYzGzYjljZTY4ZDFj”     “生的”： {       “ client_id”：“ SIR”，       “ redirect_uri”：“ http://localhost:53200/signin-oidc”，       “ response_mode”：“ form_post”，       “ response_type”：“ id_token代码”，       “ scope”：“ openid个人资料”，       “状态”： “OpenIdConnect.AuthenticationProperties = WBfqf-a6W0K-0x6giakJP1GCkjUyG0wzOgAr9AuitPNyUb6wsIlzJN-Yvv-ARRdTd5huJIIl3N0mpI95EbLzGKIVmAhXr4JiIWKo2dOCTFI7PH218T9V1vVkKP3kFmQgtRRYRagG9YEA2PvyMtxzQXMf4v3pPequ8Am7H_8TIfgMqspxAnTsXQ4K-cD_TBTVFc45AiDiylpWup1_Ovrpqu700JCGimHZJRuXP25MHMs”，       “ nonce”：“ 636809130138863279.M2IyNTYyZTgtZTk0Ni00OWU5LWI4MmMtNGU2MWY4M2FkMzQzNzExYjRjYjYtOWY4MC00NjQwLWEyZGYtYzGzYjljZTY4ZDFj”       “ x-client-SKU”：“ ID_NET461”，       “ x-client-ver”：“ 5.3.0.0”     }   }   IdentityServer4.ResponseHandling.AuthorizeInteractionResponseGenerator：信息：显示登录名：用户未通过身份验证   IdentityServer4.ResponseHandling.AuthorizeInteractionResponseGenerator：信息：显示登录名：用户未通过身份验证   IdentityServer4.ResponseHandling.AuthorizeInteractionResponseGenerator：信息：显示登录名：用户未通过身份验证   IdentityServer4.ResponseHandling.AuthorizeInteractionResponseGenerator：信息：显示登录名：用户未通过身份验证   引发异常：IdentityServer4.dll中的“ System.NullReferenceException”   引发异常：IdentityServer4.dll中的“ System.NullReferenceException”   'dotnet.exe'（CoreCLR：clrhost）：已加载'C：\ Program Files \ dotnet \ shared \ Microsoft.NETCore.App \ 2.1.6 \ System.Diagnostics.StackTrace.dll'。符号已加载。   'dotnet.exe'（CoreCLR：clrhost）：已加载'C：\ Program Files \ dotnet \ shared \ Microsoft.NETCore.App \ 2.1.6 \ System.Reflection.Metadata.dll'。符号已加载。   'dotnet.exe'（CoreCLR：clrhost）：已加载'C：\ Program Files \ dotnet \ shared \ Microsoft.NETCore.App \ 2.1.6 \ System.IO.MemoryMappedFiles.dll'。符号已加载。   IdentityServer4.Hosting.IdentityServerMiddleware：Critical：未处理的异常：对象引用未设置为对象的实例。

System.NullReferenceException：对象引用未设置为实例   一个对象。在   IdentityServer4.Extensions.StringExtensions.AddQueryString（String url，   字符串查询）   C：\ local \ identity \ server4 \ IdentityServer4 \ src \ Extensions \ StringsExtensions.cs：line   197点   IdentityServer4.Endpoints.Results.LoginPageResult.ExecuteAsync（HttpContext   上下文中）   C：\ local \ identity \ server4 \ IdentityServer4 \ src \ Endpoints \ Results \ LoginPageResult.cs：line   61岁   IdentityServer4.Hosting.IdentityServerMiddleware.Invoke（HttpContext   上下文，IEndpointRouter路由器，IUserSession会话，IEventService   事件）中   C：\ local \ identity \ server4 \ IdentityServer4 \ src \ Hosting \ IdentityServerMiddleware.cs：line   59 IdentityServer4.Hosting.IdentityServerMiddleware：严重：   未处理的异常：对象引用未设置为的实例   对象。

因此在AddQueryString方法中，URL为null。在我的Web客户端中，我的启动方法是;

public void Configuration(IAppBuilder app)
{
    app.UseCookieAuthentication(new CookieAuthenticationOptions
    {
        AuthenticationType = Settings.SignInAsAuthenticationType    // "Cookies";
    });

    app.UseOpenIdConnectAuthentication(openIdConnectOptions: new OpenIdConnectAuthenticationOptions
    {
        AuthenticationType = "oidc",
        Authority = Settings.AuthorityUrl,      //ID Server,  "https://localhost:44314/"; https://localhost:44307/
        ClientId = Settings.ClientId,           // "SIR"
        Scope = Settings.Scope,                 // "openid profile";
        ResponseType = Settings.ResponseType,   // "id_token code";
        SignInAsAuthenticationType = Settings.SignInAsAuthenticationType,
        //--------------------------------------// "Cookies";
        RedirectUri = Settings.RedirectUri,     // URL of website, http://localhost:53200/signin-oidc;
        RequireHttpsMetadata = Settings.RequireHttpsMetadata,
        //--------------------------------------// true
        ClientSecret = "secret"
    });

    app.Use(async (ctx, next) =>
    {
        var message = ctx.Authentication.User.Identity.IsAuthenticated
            ? $"User: {ctx.Authentication.User.Identity.Name}"
            : "User Not Authenticated";
        await next();
    });
}

注意，我正在使用Microsoft.Owin

我的IdentityServer4中的客户端是;

public static IEnumerable<Client> Clients()
{
    return new[]
    {
        new Client
        {
            ClientId = "SIR",
            ClientName = "SIR",
            AllowedGrantTypes = GrantTypes.Hybrid,
            AllowedScopes = new[]
            {
                IdentityServerConstants.StandardScopes.OpenId,
                IdentityServerConstants.StandardScopes.Profile
            },
            RedirectUris = {
                "https://localhost:44314",
                "http://localhost:53200/signin-oidc"
            },
            ClientSecrets = { new Secret("secret".Sha256())}
        }
    };
}

这是为什么，我该如何解决？

Answer 1

将UserInteractionURL添加到AddIdentityServer。它将解决您的问题

 services.AddIdentityServer(options =>
                {
                    options.UserInteraction = new UserInteractionOptions()
                    {
                        LogoutUrl = "/Identity/account/logout",
                        LoginUrl = "/Identity/account/login",
                        LoginReturnUrlParameter = "returnUrl"
                    };
                })

调用IdentityServer4会生成System.NullReferenceException：对象引用未设置为对象的实例

1 个答案: