.NET 6升级.NET 8后触发InvalidOperationException问题求助

非重复问题 #

本问题并非《服务集合无法修改，因为它是只读的》的重复问题：我的代码中并未在var app = builder.Build();之后对builder.Services进行任何操作

问题描述 #

我正在将一个C#编写的ASP.NET Core Web API项目从.NET 6升级到.NET 8。我仅做了如下修改：

<PropertyGroup>
    <TargetFramework>net6.0</TargetFramework>
    <Nullable>enable</Nullable>
    <ImplicitUsings>enable</ImplicitUsings>
    <Configurations>Debug;Release;StoutBI;UAT</Configurations>
</PropertyGroup>

修改为

<TargetFramework>net8.0</TargetFramework>

在我们升级的其他项目中，这样的修改足以让项目编译并正常运行。

但在本项目中，代码可以编译，但每次调用端点时都会触发以下异常：

System.InvalidOperationException: The service collection cannot be modified because it is read-only.

at Microsoft.Extensions.DependencyInjection.ServiceCollection.ThrowReadOnlyException()

at Microsoft.Extensions.DependencyInjection.ServiceCollection.System.Collections.Generic.ICollection<Microsoft.Extensions.DependencyInjection.ServiceDescriptor>.Add(ServiceDescriptor item)

at Microsoft.Extensions.DependencyInjection.ServiceCollectionServiceExtensions.AddTransient(IServiceCollection services, Type serviceType, Type implementationType)

at Microsoft.Extensions.DependencyInjection.OptionsBuilderExtensions.ValidateOnStart[TOptions](OptionsBuilder1 optionsBuilder) at Microsoft.Extensions.DependencyInjection.MetricsServiceExtensions.AddMetrics(IServiceCollection services) at Microsoft.Extensions.DependencyInjection.HttpClientFactoryServiceCollectionExtensions.AddHttpClient(IServiceCollection services) at Microsoft.Identity.Web.MicrosoftIdentityWebAppAuthenticationBuilderWithConfiguration.<EnableTokenAcquisitionToCallDownstreamApi>b__1_0(ConfidentialClientApplicationOptions options) at Microsoft.Extensions.Options.OptionsFactory1.Create(String name)

at System.Lazy1.ViaFactory(LazyThreadSafetyMode mode) at System.Lazy1.ExecutionAndPublication(LazyHelper executionAndPublication, Boolean useDefaultConstructor)

at System.Lazy1.CreateValue() at Microsoft.Extensions.Options.OptionsCache1.GetOrAdd[TArg](String name, Func3 createOptions, TArg factoryArgument) at Microsoft.Extensions.Options.OptionsMonitor1.Get(String name)

at Microsoft.Identity.Web.MicrosoftIdentityWebAppAuthenticationBuilder.<>c__DisplayClass11_0.b__0(OpenIdConnectOptions options, IMergedOptionsStore mergedOptionsMonitor, IOptionsMonitor1 ccaOptionsMonitor, IOptions1 ccaOptions)

at Microsoft.Extensions.Options.ConfigureNamedOptions4.Configure(String name, TOptions options) at Microsoft.Extensions.Options.OptionsFactory1.Create(String name)

at System.Lazy1.ViaFactory(LazyThreadSafetyMode mode) --- End of stack trace from previous location --- at System.Lazy1.CreateValue()

at Microsoft.Extensions.Options.OptionsCache1.GetOrAdd[TArg](String name, Func3 createOptions, TArg factoryArgument)
at Microsoft.Extensions.Options.OptionsMonitor1.Get(String name)<br /> at Microsoft.AspNetCore.Authentication.AuthenticationHandler1.InitializeAsync(AuthenticationScheme scheme, HttpContext context)
at Microsoft.AspNetCore.Authentication.AuthenticationHandlerProvider.GetHandlerAsync(HttpContext context, String authenticationScheme)
at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware.Invoke(HttpContext context)
at Swashbuckle.AspNetCore.SwaggerUI.SwaggerUIMiddleware.Invoke(HttpContext httpContext)
at Swashbuckle.AspNetCore.Swagger.SwaggerMiddleware.Invoke(HttpContext httpContext, ISwaggerProvider swaggerProvider)
at Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddlewareImpl.Invoke(HttpContext context)

根据调用的端点不同，堆栈跟踪会略有差异，但异常始终相同（--- End of stack trace from previous location ---以上的部分）。

.NET 8在应用构建和配置方式上是否有变化？或者相关库的设置方式发生了改变？

以下是我Program.cs中的核心代码（与.NET 6时一致）：

DbContextOptionsBuilder<ReadWriteContext> optionsBuilder = new DbContextOptionsBuilder<ReadWriteContext>();
optionsBuilder.UseSqlServer(InternalApiUtil.DbConnectionString);
            
// Add manually constructed DbContext
builder.Services.AddScoped(sp => new ReadWriteContext(optionsBuilder.Options));
builder.Services.AddScoped<UserService, UserService>();

builder.Services.AddScoped<IChartsService, ChartsService>();

builder.Services.AddControllers(options =>
{
    options.Filters.Add<GlobalActionFilter>();
}).AddJsonOptions(options =>
{
    options.JsonSerializerOptions.PropertyNamingPolicy = JsonNamingPolicy.CamelCase;
    options.JsonSerializerOptions.DictionaryKeyPolicy = JsonNamingPolicy.CamelCase;
});
builder.Services.AddCors(options =>
{
    options.AddPolicy(CORS_POLICY_NAME, builder =>
    {
        builder.AllowAnyOrigin().AllowAnyHeader().AllowAnyMethod();
    });
});

builder.Services.AddEndpointsApiExplorer(); // 尝试过注释掉该行，无变化
builder.Services.AddSwaggerGen();
builder.Services.AddScoped(typeof(IGenericRepository<>), typeof(GenericRepository<>));
builder.Services.AddScoped(typeof(MyCacheService<>));
builder.Services.AddMemoryCache(opt =>
{
    opt.SizeLimit = 1024;
});
builder.Services.AddAutoMapper(ProfileFactory.CustomProfiles);

string[] initialScopes = { "Group.Read.All", "User.Read.All" };
IConfigurationSection azureAd = builder.Configuration.GetSection("AzureAd");
builder.Services.AddAuthentication()
    .AddJwtBearer()
    .AddMicrosoftIdentityWebApp(azureAd)
    .EnableTokenAcquisitionToCallDownstreamApi(initialScopes)
    .AddMicrosoftGraph()
    .AddInMemoryTokenCaches();


var app = builder.Build();
if (app.Environment.IsDevelopment())
{
    app.UseSwagger();
    app.UseSwaggerUI();
}

app.UseHttpsRedirection();
app.UseDefaultFiles();
app.UseStaticFiles();

app.UseCors(CORS_POLICY_NAME);
app.UseAuthentication();
app.UseAuthorization();

app.MapControllers();

#if DEBUG
app.Run(InternalApiUtil.LOCAL_SERVER_URL);
#else
app.Run();
#endif
if (baseRule != null && InternalApiUtil.LogDebugStatements)
{
    baseRule.EnableLoggingForLevel(NLog.LogLevel.Debug);
}
logger.Info("Ready to run.");

我是在DEBUG模式下运行代码时出现这些错误的。测试/生产部署中使用Easy Auth。

已尝试的其他方法 #

• 未手动修改，改用.NET升级助手，但它做的修改完全相同。
• 按照NuGet提示升级了所有包，结果依旧。

内容的提问来源于stack exchange，提问作者markvgti