Question

页: 1 NET MAUI Blazor Application, that share the UI with a traditional Blazor application, as can see in the Blazor Weather example found at https://github.com/danroth27/BlazorWeather。

我对这一公式的歪曲是,我希望能够在我的申请中使用认证,并分享尽可能多的法典。理想的情况是,我想把所有重复逻辑放在共同的“倡议”中(以及当然还有网上和MAUI的版本)。

I ve tried to create a very basic sample Solution so you could see what my issue is. The public repository should be accessible at https://github.com/Dukenware/OneToRuleThemAll

下面的步骤:

I ve started by creating a Blazor Server with default authentication of type "Individual Accounts".
Tested that the application runs as expected.
Created a Razor Class Library project that I ve added to the solution.
Moved all logic from BlazorServer to the RazorClassLibrary project.
Fixed HTML styling and so on so the application runs as before.
Added MAUI Blazor project.
Tested that the MAUI application runs as expected.
Referenced the RazorClassLibraryProject.
Tried displaying the UI from RazorClassLibrary by running the RazorClassLibrary.App from MauiBlazor s Main.razor.
Getting the authentication exception:

GetAuthenticationStateAsync was called before SetAuthenticationState.
   at Microsoft.AspNetCore.Components.Server.ServerAuthenticationStateProvider.GetAuthenticationStateAsync()
   at Microsoft.AspNetCore.Components.Authorization.CascadingAuthenticationState.OnInitialized()
   at Microsoft.AspNetCore.Components.ComponentBase.RunInitAndSetParametersAsync()

如果有人能向我指出我可以用来在我申请的基础上建造工作的寺庙,我真心 app。任何反馈都受到热烈欢迎。

Answer 1

我也谈到这一问题。

这就是我发现的。当我的美国国没有恢复正确结果时,我正在发现这一错误。它是执行违约判决国提供方的习俗证明:

public class CustomAuthenticationStateProvider :AuthenticationStateProvider
{

    public async Task Login(string token)
    {
        await SecureStorage.SetAsync("accounttoken", token);
        NotifyAuthenticationStateChanged(GetAuthenticationStateAsync());
    }

    public async Task Logout()
    {
        SecureStorage.Remove("accounttoken");
        NotifyAuthenticationStateChanged(GetAuthenticationStateAsync());
    }

    public override async Task<AuthenticationState>GetAuthenticationStateAsync()
    {

        try
        {
            var userInfo = await SecureStorage.GetAsync("accounttoken");
            if (userInfo != null)
            {
                var claims = new[] { new Claim(ClaimTypes.Name, "User") };
                var identity = new ClaimsIdentity(claims, "Server authentication");
                return new AuthenticationState(new ClaimsPrincipal(identity));
            }
        }
        catch (HttpRequestException ex)
        {
            //This should be implemented better
            Console.WriteLine("Request failed:" + ex.ToString());
        }

        return new AuthenticationState(new ClaimsPrincipal());
     }
}

然后,我马伊·普拉塔姆我补充说:

builder.Services.AddAuthorizationCore();
builder.Services.AddScoped<AuthenticationStateProvider, CustomAuthenticationStateProvider>();

我的回来不是完全的。

new AuthenticationState(new ClaimsPrincipal());

造成同样的错误:

GetAuthenticationStateAsync was called before SetAuthenticationState.
at Microsoft.AspNetCore.Components.Server.ServerAuthenticationStateProvider.GetAuthenticationStateAsync()
at Microsoft.AspNetCore.Components.Authorization.CascadingAuthenticationState.OnInitialized()
at Microsoft.AspNetCore.Components.ComponentBase.RunInitAndSetParametersAsync()

希望这一帮助!

Answer 2

How can I Add page to BlazorServer and navigate to that page ? https://github.com/Dukenware/OneToRuleThemAll/issues/1

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