Azure Active Directory B2C，404错误，URL中出现意外的问号 [英] Azure Active Directory B2C, 404 error, unexpected question mark in URL

问题描述

我正在从此官方教程。
在我运行代码时显示
404-找不到文件或目录。
您正在寻找的资源可能已被删除，名称已更改或暂时不可用。
问题出在URL上，它包含问号（屏幕截图）。如果我手动替换？，我应该用问号（&）代替问号。与&它工作正常。
这里是我的启动类

I am implementing Azure Active Directory B2C from this official tutorial. when I run my code it says 404 - File or directory not found. The resource you are looking for might have been removed, had its name changed, or is temporarily unavailable. The issue is with URL, it contain question mark (screenshot). In place of question mark there should me an ampersand (&), if I manually replace "?" with "&" it works fine. Here my startup class

public partial class Startup
    {
        // App config settings
        public static string ClientId = ConfigurationManager.AppSettings["ida:ClientId"];
        public static string ClientSecret = ConfigurationManager.AppSettings["ida:ClientSecret"];
        public static string AadInstance = ConfigurationManager.AppSettings["ida:AadInstance"];
        public static string Tenant = ConfigurationManager.AppSettings["ida:Tenant"];
        public static string RedirectUri = ConfigurationManager.AppSettings["ida:RedirectUri"];
        public static string ServiceUrl = ConfigurationManager.AppSettings["api:TaskServiceUrl"];

    // B2C policy identifiers
    public static string SignUpSignInPolicyId = ConfigurationManager.AppSettings["ida:SignUpSignInPolicyId"];
    public static string EditProfilePolicyId = ConfigurationManager.AppSettings["ida:EditProfilePolicyId"];
    public static string ResetPasswordPolicyId = ConfigurationManager.AppSettings["ida:ResetPasswordPolicyId"];

    public static string DefaultPolicy = SignUpSignInPolicyId;

    // API Scopes
    public static string ApiIdentifier = ConfigurationManager.AppSettings["api:ApiIdentifier"];
    public static string ReadTasksScope = ApiIdentifier + ConfigurationManager.AppSettings["api:ReadScope"];
    public static string WriteTasksScope = ApiIdentifier + ConfigurationManager.AppSettings["api:WriteScope"];
    public static string[] Scopes = new string[] { ReadTasksScope, WriteTasksScope };

    // OWIN auth middleware constants
    public const string ObjectIdElement = "http://schemas.xmlsoap.org/ws/2005/05/identity/claims/nameidentifier";

    // Authorities
    public static string Authority = String.Format(AadInstance, Tenant, DefaultPolicy);

    // Initialize variables ...

    // Configure the OWIN middleware
    public void ConfigureAuth(IAppBuilder app)
    {
        app.UseCookieAuthentication(new CookieAuthenticationOptions());
        app.SetDefaultSignInAsAuthenticationType(CookieAuthenticationDefaults.AuthenticationType);

        app.UseOpenIdConnectAuthentication(
            new OpenIdConnectAuthenticationOptions
            {
            // Generate the metadata address using the tenant and policy information
            MetadataAddress = Authority,

            // These are standard OpenID Connect parameters, with values pulled from web.config
            ClientId = ClientId,
                RedirectUri = RedirectUri,
                PostLogoutRedirectUri = RedirectUri,

            // Specify the callbacks for each type of notifications
            Notifications = new OpenIdConnectAuthenticationNotifications
                {
                    RedirectToIdentityProvider = OnRedirectToIdentityProvider,
                    AuthorizationCodeReceived = OnAuthorizationCodeReceived,
                    AuthenticationFailed = OnAuthenticationFailed,
                },

            // Specify the claims to validate
            TokenValidationParameters = new TokenValidationParameters
                {
                    NameClaimType = "name"
                },

            // Specify the scope by appending all of the scopes requested into one string (seperated by a blank space)
            Scope = $"{OpenIdConnectScopes.OpenId} {ReadTasksScope} {WriteTasksScope}"
            }
        );
    }`  

和此处的webconfig

and here webconfig

<add key="ida:Tenant" value="explicarte.onmicrosoft.com" />
<add key="ida:ClientId" value="a2d**********************" />
<add key="ida:ClientSecret" value="0f**************" />
<add key="ida:AadInstance" value="https://login.microsoftonline.com/{0}/v2.0/.well-known/openid-configuration?p={1}" />
<add key="ida:RedirectUri" value="https://explicarted.azurewebsites.net/" />
<add key="ida:SignUpSignInPolicyId" value="B2C_1_MySignupSigninPolicy" />
<add key="EditProfilePolicyId" value="B2C_1_myProfileEditingPolicy" />
<add key="ResetPasswordPolicyId" value="B2C_1_PasswordResetPolicy" />
<add key="api:ApiIdentifier" value="https://explicarted.azurewebsites.net/tasks/" />
<add key="api:ReadScope" value="read" />
<add key="api:WriteScope" value="write" />
<add key="api:TaskServiceUrl" value="https://explicarted.azurewebsites.net/" />

推荐答案

关于处理现有查询存在一个已知问题.Net库之一中的字符串参数。

There is a known issue around handling pre-existing query string parameters in one of the .Net libraries.

您最有可能使用这些旧版本之一。我相信特定的问题库是 Microsoft.IdentityModel.Protocol.Extensions

You are most likely using one of these older versions. I believe the specific problematic library is Microsoft.IdentityModel.Protocol.Extensions.

您应该尝试更新此库，或者仅以示例为起点，因为该库已经具有正确的（更新的）库。

You should try updating this library or just taking the sample as a starting point as that one already has correct (updated) libraries.

PS：您应该使用以下权限：

PS: You should use the following authority:

> https://login.microsoftonline.com/ tfp / {0} / {1} / v2 .0 /。众所周知/ openid-配置

https://login.microsoftonline.com/tfp/{0}/{1}/v2.0/.well-known/openid-configuration

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