Microsoft.AspNetCore.SpaProxy 6.0.1 - ASPNETCORE_HOSTINGSTARTUPASSEMBLIES - System.UriFormatException:无效URI: URI为空
在start上添加Microsoft.AspNetCore.SpaProxy 6.0.1 NuGet时，我得到以下错误：
fail: Microsoft.AspNetCore.Server.Kestrel13连接id "X"，请求id "Y:00000001"：应用程序引发了未处理的异常。System.UriFormatException:无效URI: URI为空。在Microsoft.AspNetCore.SpaProxy.SpaProxyMiddleware.Invoke(HttpContext上下文的System.Uri..ctor(String uriString)在Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http.HttpProtocol.ProcessRequestsTContext的System.Uri.CreateThis(字符串uri、布尔dontEscape、uriKind UriKind、UriCreationOptions& creationOptions)
在.NET 5中，Startup.cs提供了以下代码。
app.UseSpa(spa =>
{
spa.Options.SourcePath = "ClientApp";
if (env.IsDevelopment())
{
spa.UseReactDevelopmentServer(npmScript: "start");
}
});这在.NET 6中不存在，相反，launchSettings.json有一个环境变量："ASPNETCORE_HOSTINGSTARTUPASSEMBLIES": "Microsoft.AspNetCore.SpaProxy"
我知道它可以工作，因为使用模板ASP.NET Core with React.js和.NET 6的新项目启动时没有问题。
需要什么才能将Microsoft.AspNetCore.SpaProxy添加到existing.NET 6 ASP.NET核心应用程序中，使用和TypeScript？
https://create-react-app.dev/docs/adding-typescript/
我尝试从工作项目中添加文件aspnetcore-https.js、aspnetcore-react.js、.env、.env.development。
使用以下值编辑的Program.cs：
app.UseStaticFiles();
app.UseRouting();
app.MapControllerRoute(
name: "default",
pattern: "{controller}/{action=Index}/{id?}");
app.MapFallbackToFile("index.html");修改的package.json如下所示：
"prestart": "node aspnetcore-https && node aspnetcore-react",
"start": "rimraf ./build && react-scripts start",我已经安装了rimraf，命令npm run start和npm run build可以工作。
回答 1
Stack Overflow用户
发布于 2022-01-05 16:39:45
这个特定的错误需要一个名为SpaProxyServerUrl的变量( .csproj )。为了使一切按预期工作，还需要一些其他的东西，所以下面是完整的代码：
launchSettings.json
{
"$schema": "https://json.schemastore.org/launchsettings.json",
"iisSettings": {
"windowsAuthentication": false,
"anonymousAuthentication": true,
"iisExpress": {
"applicationUrl": "http://localhost:39330",
"sslPort": 44358
}
},
"profiles": {
"Project.Web": {
"commandName": "Project",
"dotnetRunMessages": true,
"launchBrowser": true,
"applicationUrl": "https://localhost:7178;http://localhost:5178",
"environmentVariables": {
"ASPNETCORE_ENVIRONMENT": "Development",
"ASPNETCORE_HOSTINGSTARTUPASSEMBLIES": "Microsoft.AspNetCore.SpaProxy"
}
},
"IIS Express": {
"commandName": "IISExpress",
"launchBrowser": true,
"environmentVariables": {
"ASPNETCORE_ENVIRONMENT": "Development",
"ASPNETCORE_HOSTINGSTARTUPASSEMBLIES": "Microsoft.AspNetCore.SpaProxy"
}
}
}
}Program.cs
app.MapFallbackToFile("index.html");.csproj
<PropertyGroup>
<TargetFramework>net6.0</TargetFramework>
<Nullable>enable</Nullable>
<ImplicitUsings>enable</ImplicitUsings>
<UserSecretsId>aspnet-Project.Web-12345678-1234-1234-1234-123456789012</UserSecretsId>
<SpaRoot>ClientApp\</SpaRoot>
<SpaProxyServerUrl>https://localhost:44358</SpaProxyServerUrl>
<SpaProxyLaunchCommand>npm start</SpaProxyLaunchCommand>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="Microsoft.AspNetCore.Authentication.JwtBearer" Version="6.0.1" />
<PackageReference Include="Microsoft.AspNetCore.Authentication.OpenIdConnect" Version="6.0.1" />
<PackageReference Include="Microsoft.AspNetCore.SpaProxy" Version="6.0.1" />
<PackageReference Include="Microsoft.Identity.Web" Version="1.16.0" />
<PackageReference Include="Swashbuckle.AspNetCore" Version="6.2.3" />
</ItemGroup>
<ItemGroup>
<!-- Don't publish the SPA source files, but do show them in the project files list -->
<Content Remove="$(SpaRoot)**" />
<None Remove="$(SpaRoot)**" />
<None Include="$(SpaRoot)**" Exclude="$(SpaRoot)node_modules\**" />
</ItemGroup>
<Target Name="DebugEnsureNodeEnv" BeforeTargets="Build" Condition=" '$(Configuration)' == 'Debug' And !Exists('$(SpaRoot)node_modules') ">
<!-- Ensure Node.js is installed -->
<Exec Command="node --version" ContinueOnError="true">
<Output TaskParameter="ExitCode" PropertyName="ErrorCode" />
</Exec>
<Error Condition="'$(ErrorCode)' != '0'" Text="Node.js is required to build and run this project. To continue, please install Node.js from https://nodejs.org/, and then restart your command prompt or IDE." />
<Message Importance="high" Text="Restoring dependencies using 'npm'. This may take several minutes..." />
<Exec WorkingDirectory="$(SpaRoot)" Command="npm install" />
</Target>
<Target Name="PublishRunWebpack" AfterTargets="ComputeFilesToPublish">
<!-- As part of publishing, ensure the JS resources are freshly built in production mode -->
<Exec WorkingDirectory="$(SpaRoot)" Command="npm install" />
<Exec WorkingDirectory="$(SpaRoot)" Command="npm run build" />
<!-- Include the newly-built files in the publish output -->
<ItemGroup>
<DistFiles Include="$(SpaRoot)build\**" />
<ResolvedFileToPublish Include="@(DistFiles->'%(FullPath)')" Exclude="@(ResolvedFileToPublish)">
<RelativePath>wwwroot\%(RecursiveDir)%(FileName)%(Extension)</RelativePath>
<CopyToPublishDirectory>PreserveNewest</CopyToPublishDirectory>
<ExcludeFromSingleFile>true</ExcludeFromSingleFile>
</ResolvedFileToPublish>
</ItemGroup>
</Target>https://stackoverflow.com/questions/70595369
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