我一直试图弄清楚为什么我的控制台应用程序在我引入一个新包的那一刻就失败了。使用IdentityModel.OidcClient
andMicrosoft.AspNetCore.Server.Kestrel
仅有效,但添加Microsoft.Extensions.Configuration.Json
时会引发异常。我也没有在代码中引用新包,我只是将它添加到项目中。
重现步骤:
克隆https://github.com/IdentityModel/IdentityModel.OidcClient.Samples.git
将 NetCoreConsoleClient升级到 .NET 5(更新包)。
删除Serilog.Sinks.Literate过时的包。
在 Program.cs 中删除
.WriteTo.LiterateConsole
对 SeriLog 的调用并添加using IdentityModel.Client
.为类中的方法添加
CancellationToken cancellationToken = new CancellationToken()
参数。接口的签名已更改,新方法应如下所示:InvokeAsync
SystemBrowser
IBrowser
public async Task<BrowserResult> InvokeAsync(BrowserOptions options, CancellationToken cancellationToken = new CancellationToken())
运行应用程序并使用 alice/alice 登录。获取token成功。
添加包
Microsoft.Extensions.Configuration.Json
。运行应用程序。
Object reference not set to an instance of an object
它现在在写入 http 响应时抛出异常。
LoopbackHttpListener.SetResult
写入响应时发生异常:ctx.Response.WriteAsync("<h1>You can now return to the application.</h1>");
为什么只添加一个包,会对运行时产生如此大的影响?
项目文件:
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<TargetFramework>net5.0</TargetFramework>
<AssemblyName>NetCoreConsoleClient</AssemblyName>
<OutputType>Exe</OutputType>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="5.0.0" />
<PackageReference Include="Serilog.Extensions.Logging" Version="3.0.1" />
<PackageReference Include="Microsoft.AspNetCore.Server.Kestrel" Version="2.2.0" />
<PackageReference Include="IdentityModel.OidcClient" Version="3.1.2" />
</ItemGroup>
</Project>
完全例外:
System.NullReferenceException
HResult=0x80004003
Message=Object reference not set to an instance of an object.
Source=Microsoft.AspNetCore.Server.Kestrel.Core
StackTrace:
at Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http.HttpProtocol.CreateResponseHeader(Boolean appCompleted)
at Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http.HttpProtocol.ProduceStart(Boolean appCompleted)
at Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http.HttpProtocol.InitializeResponseAsync(Int32 firstWriteByteCount)
at Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http.HttpProtocol.WriteAsync(ReadOnlyMemory`1 data, CancellationToken cancellationToken)
at Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http.HttpResponseStream.WriteAsync(Byte[] buffer, Int32 offset, Int32 count, CancellationToken cancellationToken)
at Microsoft.AspNetCore.Http.HttpResponseWritingExtensions.WriteAsync(HttpResponse response, String text, Encoding encoding, CancellationToken cancellationToken)
at Microsoft.AspNetCore.Http.HttpResponseWritingExtensions.WriteAsync(HttpResponse response, String text, CancellationToken cancellationToken)
at ConsoleClientWithBrowser.LoopbackHttpListener.SetResult(String value, HttpContext ctx) in C:\Users\stefa\Source\Repos\IdentityModel.OidcClient.Samples\NetCoreConsoleClient\src\NetCoreConsoleClient\SystemBrowser.cs:line 172
解决方案
摆脱Microsoft.AspNetCore.Server.Kestrel
and Microsoft.Extensions.Configuration.Json
,将 SDK 更改为Microsoft.NET.Sdk.Web
,一切正常。感谢@JHBonarius 为我指明了正确的方向。