找不到类型Microsoft的Blazor默认构造函数.AspNetCore.组件.批准AuthorizeRouteVi

我不明白为什么我总是得到这个异常。我试图保护Blazor WebAssembly

blazor.webassembly.js:1 WASM:System。MissingMethodException：默认找不到类型的构造函数微软AspNetCore。组件。批准AuthorizeRouteView

app.razor

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

这是客户端程序.cs

    public class Program
    {
        public static async Task Main(string[] args)
        {
            var builder = WebAssemblyHostBuilder.CreateDefault(args);
            builder.RootComponents.Add<App>("app");
            builder.Services.AddScoped<AuthenticationStateProvider, ApiAuthenticationStateProvider>();
            builder.Services.AddAuthorizationCore(options => { });            
            await builder.Build().RunAsync();
        }
    }

自定义身份验证状态提供程序

public class ApiAuthenticationStateProvider : AuthenticationStateProvider
{
    private readonly HttpClient _httpClient;
    private readonly ILocalStorageService _localStorage;
    public ApiAuthenticationStateProvider(HttpClient httpClient, ILocalStorageService localStorage)
    {
        _httpClient = httpClient;
        _localStorage = localStorage;
    }
    public override async Task<AuthenticationState> GetAuthenticationStateAsync()
    {
        var savedToken = await _localStorage.GetItemAsync<string>("authToken");
        if (string.IsNullOrWhiteSpace(savedToken))
        {
            return new AuthenticationState(new ClaimsPrincipal(new ClaimsIdentity()));
        }
        _httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("bearer", savedToken);
        return new AuthenticationState(new ClaimsPrincipal(new ClaimsIdentity(ParseClaimsFromJwt(savedToken), "jwt")));
    }
    public void MarkUserAsAuthenticated(string email)
    {
        ClaimsPrincipal authenticatedUser = new ClaimsPrincipal(new ClaimsIdentity(new[] { new Claim(ClaimTypes.Name, email) }, "apiauth"));
        var authState = Task.FromResult(new AuthenticationState(authenticatedUser));
        NotifyAuthenticationStateChanged(authState);
    }
    public void MarkUserAsLoggedOut()
    {
        var anonymousUser = new ClaimsPrincipal(new ClaimsIdentity());
        var authState = Task.FromResult(new AuthenticationState(anonymousUser));
        NotifyAuthenticationStateChanged(authState);
    }
    private IEnumerable<Claim> ParseClaimsFromJwt(string jwt)
    {
        var claims = new List<Claim>();
        var payload = jwt.Split('.')[1];
        var jsonBytes = ParseBase64WithoutPadding(payload);
        var keyValuePairs = JsonSerializer.Deserialize<Dictionary<string, object>>(jsonBytes);
        keyValuePairs.TryGetValue(ClaimTypes.Role, out object roles);
        if (roles != null)
        {
            if (roles.ToString().Trim().StartsWith("["))
            {
                var parsedRoles = JsonSerializer.Deserialize<string[]>(roles.ToString());
                foreach (var parsedRole in parsedRoles)
                {
                    claims.Add(new Claim(ClaimTypes.Role, parsedRole));
                }
            }
            else
            {
                claims.Add(new Claim(ClaimTypes.Role, roles.ToString()));
            }
            keyValuePairs.Remove(ClaimTypes.Role);
        }
        claims.AddRange(keyValuePairs.Select(kvp => new Claim(kvp.Key, kvp.Value.ToString())));
        return claims;
    }
    private byte[] ParseBase64WithoutPadding(string base64)
    {
        switch (base64.Length % 4)
        {
            case 2: base64 += "=="; break;
            case 3: base64 += "="; break;
        }
        return Convert.FromBase64String(base64);
    }
}

}

服务器启动.cs

  public class Startup
    {
        public IConfiguration Configuration { get; }
        // This method gets called by the runtime. Use this method to add services to the container.
        // For more information on how to configure your application, visit https://go.microsoft.com/fwlink/?LinkID=398940
        public Startup(IConfiguration configuration)
        {
            Configuration = configuration;
        }
        public void ConfigureServices(IServiceCollection services)
        {
            services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme)
                .AddJwtBearer(options =>
                {
                    options.TokenValidationParameters = new TokenValidationParameters
                    {
                        ValidateIssuer = true,
                        ValidateAudience = true,
                        ValidateLifetime = true,
                        ValidateIssuerSigningKey = true,
                        ValidIssuer = Configuration["JwtIssuer"],
                        ValidAudience = Configuration["JwtAudience"],
                        IssuerSigningKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(Configuration["JwtSecurityKey"]))
                    };
                });
            services.AddBlazoredLocalStorage();
            services.AddAuthorizationCore();
            services.AddScoped<AuthenticationStateProvider, ApiAuthenticationStateProvider>();
            services.AddScoped<IAuthService, AuthService>();
            services.AddMvc();
            services.AddResponseCompression(opts =>
            {
                opts.MimeTypes = ResponseCompressionDefaults.MimeTypes.Concat(
                    new[] { "application/octet-stream" });
            });

            services.AddDbContext<ApplicationDbContext>(options =>
                options.UseSqlServer(Configuration.GetConnectionString("DefaultConnection")));
            services.AddDefaultIdentity<IdentityUser>()
                .AddEntityFrameworkStores<ApplicationDbContext>();
        }
        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
        {
            app.UseResponseCompression();
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
                app.UseBlazorDebugging();
            }
            app.UseStaticFiles();
            app.UseClientSideBlazorFiles<Client.Program>();
            app.UseRouting();
            app.UseAuthentication();
            app.UseAuthorization();
            app.UseEndpoints(endpoints =>
            {
                endpoints.MapDefaultControllerRoute();
                endpoints.MapFallbackToClientSideBlazor<Client.Program>("index.html");
            });
        }
    }