带有Azure B2C的Blazor Web Assembly应用程序总是在加载页面后立即尝试进行身份验证

Question

我正在Blazor WebAssembly应用程序中添加对Azure AD B2C的支持，我遵循了此处的说明https://learn.microsoft.com/en-us/aspnet/core/blazor/security/webassembly/hosted-with-azure-active-directory-b2c?view=aspnetcore-3.1#客户端应用程序配置

然而，一旦我加载页面，应用程序总是试图进行身份验证，这不允许网站的公共匿名部分。这个问题有什么解决办法吗？

Answer 1

默认的httpClient需要授权，因此即使打电话查看某人是否获得授权，代码也会提示用户登录

因此，为了解决这个问题，在Program.cs文件(在客户端项目中(中，我创建了一个httpClient，它允许匿名请求

// This allows anonymous requests
// See: https://learn.microsoft.com/en-us/aspnet/core/security/blazor/webassembly/additional-scenarios?view=aspnetcore-3.1#unauthenticated-or-unauthorized-web-api-requests-in-an-app-with-a-secure-default-client
builder.Services.AddHttpClient("ServerAPI.NoAuthenticationClient", client => client.BaseAddress = new Uri(builder.HostEnvironment.BaseAddress));

这个例子应该有帮助：https://github.com/ADefWebserver/SyncfusionHelpDeskClient/blob/main/Client/Pages/Index.razor

它调用NoAuthenticationClienthttpClient

protected override void OnInitialized()
{
// Create a httpClient to use for non-authenticated calls
NoAuthenticationClient =
ClientFactory.CreateClient(
"ServerAPI.NoAuthenticationClient");
}
public async Task HandleValidSubmit(EditContext context)
{
try
{
// Save the new Help Desk Ticket
// Create a new GUID for this Help Desk Ticket
objHelpDeskTicket.TicketGuid =
System.Guid.NewGuid().ToString();
await NoAuthenticationClient.PostAsJsonAsync(
"SyncfusionHelpDesk", objHelpDeskTicket);
// Send Email
HelpDeskEmail objHelpDeskEmail = new HelpDeskEmail();
objHelpDeskEmail.EmailType = "Help Desk Ticket Created";
objHelpDeskEmail.EmailAddress = "";
objHelpDeskEmail.TicketGuid = objHelpDeskTicket.TicketGuid;
await NoAuthenticationClient.PostAsJsonAsync(
"Email", objHelpDeskEmail);
// Clear the form
objHelpDeskTicket = new HelpDeskTicket();
// Show the Toast
ToastContent = "Saved!";
StateHasChanged();
await this.ToastObj.Show();
}
catch (Exception ex)
{
ToastContent = ex.Message;
StateHasChanged();
await this.ToastObj.Show();
}
}