Blazor Preview 9 问题与 Razor 布局中的记录器

Question

自升级到 Net Core 3.0 Preview 9 后，我在尝试注入控制台记录器时遇到以下错误；

WASM: System.MissingMethodException: Method not found: System.Threading.Tasks.Task`1 Microsoft.JSInterop.IJSRuntime.InvokeAsync(string,object[])

WASM: at System.Runtime.CompilerServices.AsyncVoidMethodBuilder.Start[TStateMachine] (TStateMachine& stateMachine) <0x2df6378 + 0x0003e> in :0

WASM: at Blazor.Extensions.Logging.BrowserConsoleLogger.Log[TState] (Microsoft.Extensions.Logging.LogLevel logLevel, Microsoft.Extensions.Logging.EventId eventId, TState state, System.Exception exception, System.Func`3[T1,T2,TResult] formatter) <0x2df5e90 + 0x00094> in <3eb34b93cd4a47bf804fb0648b089edf>:0

WASM: at Microsoft.Extensions.Logging.LoggerMessage+<>c__DisplayClass4_0.b__0 (Microsoft.Extensions.Logging.ILogger logger, System.Exception exception) <0x2df51a0 + 0x00058> in :0

WASM: at (wrapper delegate-invoke) System.Action`2[Microsoft.Extensions.Logging.ILogger,System.Exception].invoke_void_T1_T2(Microsoft.Extensions.Logging.ILogger,System.Exception)

WASM: at Microsoft.Extensions.Logging.LoggingExtensions.UserAuthorizationFailed (Microsoft.Extensions.Logging.ILogger logger) <0x2dee5f0 + 0x00014> in <85acc2b572f448f39259eac9936732f8>:0

WASM: at Microsoft.AspNetCore.Authorization.DefaultAuthorizationService.AuthorizeAsync (System.Security.Claims.ClaimsPrincipal user, System.Object resource, System.Collections.Generic.IEnumerable`1[T] requirements) <0x2ddd378 + 0x00338> in <85acc2b572f448f39259eac9936732f8>:0

WASM: at Microsoft.AspNetCore.Components.Authorization.AuthorizeViewCore.IsAuthorizedAsync (System.Security.Claims.ClaimsPrincipal user) <0x2d52860 + 0x00228> in <5266bbb196bb40a89b886a09631725e6>:0

WASM: at Microsoft.AspNetCore.Components.Authorization.AuthorizeViewCore.OnParametersSetAsync () <0x2d512a0 + 0x0026c> in <5266bbb196bb40a89b886a09631725e6>:0

WASM: at Microsoft.AspNetCore.Components.ComponentBase.CallStateHasChangedOnAsyncCompletion (System.Threading.Tasks.Task task) <0x2e0b8f0 + 0x00118> in :0

WASM: at Microsoft.AspNetCore.Components.ComponentBase.RunInitAndSetParametersAsync () <0x2bbb2e8 + 0x00248> in :0

在我的剃刀视图中，我按如下方式注入记录器；

@inject ILogger<Index> logger

我的基地_Imports.razor如下；

@using Microsoft.AspNetCore.Components.Web
@using Microsoft.AspNetCore.Components.Authorization
@using System.Net.Http
@using Microsoft.AspNetCore.Components.Forms
@using Microsoft.AspNetCore.Components.Routing
@using Microsoft.JSInterop
@using Microsoft.Extensions.Logging
@using Blazored.LocalStorage
@using Blazorise
@using Blazorise.Sidebar

我的 App.razor 是；

<Router AppAssembly="@typeof(Program).Assembly">
    <Found Context="routeData">
        <AuthorizeRouteView RouteData="@routeData" DefaultLayout="@typeof(MainLayout)">
            <NotAuthorized>
                <p>Nope, nope!</p>
            </NotAuthorized>
        </AuthorizeRouteView>
    </Found>
    <NotFound>
        <LayoutView Layout="@typeof(MainLayout)">
            <p>Sorry, there's nothing at this address.</p>
        </LayoutView>
    </NotFound>
</Router>

此时呈现的视图是登录页面。如果用户未获得授权，则会在重定向时移至该位置。所以在我的 MainLayout.Razor 页面中，我有以下内容；

@functions
{
    [CascadingParameter] 
    private Task<AuthenticationState> authenticationStateTask { get; set; }

    protected override async Task OnInitializedAsync()
    {
        var authState = await authenticationStateTask;
        var user = authState.User;

        if (!user.Identity.IsAuthenticated)
        {
            UriHelper.NavigateTo(@"\login");
        }
    }
}

为了完整起见，我的 Startup.cs 中的 ConfigureServices 添加了如下记录器；

        services.AddLogging(builder => builder
           .AddBrowserConsole() 
           .SetMinimumLevel(LogLevel.Trace)
       );

谁能告诉我我做错了什么？由于 'login' 页面正在呈现，它似乎只是问题所在的记录器？

Per Tsengs 评论我的 nuget 依赖项如下；

Answer 1

您似乎在项目中混合了版本（preview8 和 preview9），或者（第三方）依赖于针对 preview8.

构建的库

在预览版 9 IJSRuntime 中，签名从 Task<T> 更改为 ValueTask<T>

来源：https://devblogs.microsoft.com/aspnet/asp-net-core-and-blazor-updates-in-net-core-3-0-preview-9/

Update implementations of IJSRuntime to return ValueTask.

如果是第三方库，请升级到最新版本或等待库的开发者更新。

Blazor Preview 9 问题与 Razor 布局中的记录器

Blazor Preview 9 Issue with Logger in Razor Layout

c#

asp.net-core

blazor

blazor-client-side