外部登录不起作用Identity Server 4 ASP.NET Core

如何解决外部登录不起作用Identity Server 4 ASP.NET Core

外部服务配置不适用于身份服务器4。

public static void ConfigureExternalOidcProvider(this IServiceCollection services)
        {
            services.AddAuthentication().AddGoogle("Google",options =>
            {
                options.SignInScheme = IdentityServerConstants.ExternalCookieAuthenticationScheme;

                options.ClientId = "xxxxxxxxxxx-xxxxxxxxxxxxxxxxxx.apps.googleusercontent.com";
                options.ClientSecret = "xxxxxxxxxxxxxxx";
            }).AddFacebook(options =>
            {
                options.SignInScheme = IdentityServerConstants.ExternalCookieAuthenticationScheme;
                options.AppId = "xxxxxxxxxxxxx";
                options.AppSecret = "xxxxxxxxxxxxxxxxxxx";
            });
        }

在外部控制器中，该模式为null，但是即使它不起作用，我也用IdentityServerConstants.ExternalCookieAuthenticationScheme对该模式进行了硬编码。

public IActionResult Challenge(string scheme,string returnUrl)
    {
        if (string.IsNullOrEmpty(returnUrl)) returnUrl = "~/";

        // validate returnUrl - either it is a valid OIDC URL or back to a local page
        if (Url.IsLocalUrl(returnUrl) == false && _interaction.IsValidReturnUrl(returnUrl) == false)
        {
            // user might have clicked on a malicious link - should be logged
            throw new Exception("invalid return URL");
        }
        
        // start challenge and roundtrip the return URL and scheme 
        var props = new AuthenticationProperties
        {
            RedirectUri = Url.Action(nameof(Callback)),Items =
            {
                { "returnUrl",returnUrl },{ "scheme",scheme },}
        };

        return Challenge(props,scheme);
        
    }

当我单击Google和Facebook按钮时，永远不会重定向到Google或Facebook页面。

这是我的调试选项的结果

Google点击

Facebook点击

CSHTML代码

   @if (Model.VisibleExternalProviders.Any())
                    {
                        @foreach (var provider in Model.VisibleExternalProviders)
                        {
                            <a class="@($"mdc-button mdc-button--outlined ml-1 mb-1 {(provider.AuthenticationScheme == "Google" ? "mdl-button--googleplus google-logo" : "mdl-button--facebook")}")"
                               asp-controller="External"
                               asp-action="Challenge"
                               asp-route-provider="@provider.AuthenticationScheme"
                               asp-route-returnUrl="@Model.ReturnUrl">
                                @if (provider.AuthenticationScheme == "Google")
                                {
                                    <i class="fab fa-google fa-fw google-logo"></i>
                                }
                                else
                                {
                                    <i class="fab fa-facebook-square fa-fw"></i>
                                }
                                @provider.DisplayName
                            </a>
                        }
                    }

解决方法

没有更多信息，很难回答您的问题，因此，我将开始介绍，然后随着您提供更多详细信息，对我的回答进行改进。首先，将鼠标悬停在外部登录按钮上时，确认您看到scheme查询参数：