Question

尝试将我的项目生成为exe文件，但出现错误：

之前：“ dotnet build -r win10-x86”没问题

运行生成的exe后，一切都还可以：

indows DPAPI to encrypt keys at rest.
Hosting environment: Production
Content root path: C:....\currencyColution\correncyProject\bin\Debug\netcoreapp2.1\win10-x86
Now listening on: http://localhost:5000
Now listening on: https://localhost:5001
Application started. Press Ctrl+C to shut down.

在加载页面出现问题之后，更精确地找不到index.html：

info: Microsoft.AspNetCore.Hosting.Internal.WebHost[1]
      Request starting HTTP/1.1 GET http://localhost:5000/
fail: Microsoft.AspNetCore.Server.Kestrel[13]
      Connection id "0HLG91TC2H0UO", Request id "0HLG91TC2H0UO:00000001": An 

unhandled exception was thrown by the application.
System.InvalidOperationException: The SPA default page middleware could not return the default page '/index.html' because it was not found, and no other middleware handled the request.
Your application is running in Production mode, so make sure it has been published, or that you have built your SPA manually. Alternatively you may wish to switch to the Development environment.

Startup.cs

using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.SpaServices.AngularCli;
using Microsoft.Extensions.DependencyInjection;
using Swashbuckle.AspNetCore.Swagger;
using System;
using System.IO;
using Microsoft.AspNetCore.Http;

namespace AspNetCore2Ang6Template
{
  public class Startup
  {

    public void ConfigureServices(IServiceCollection services)
    {
      services.AddMvc();
      services.AddSpaStaticFiles(c =>
      {
        c.RootPath = "wwwroot";
      });

    }

    public void Configure(IApplicationBuilder app, IHostingEnvironment env)
    {
      if (env.IsDevelopment())
      {
        app.UseDeveloperExceptionPage();
      }

      app.UseDefaultFiles();
      app.UseStaticFiles();
      app.UseSpaStaticFiles();
      app.UseMvc(routes =>
      {
        routes.MapRoute(name: "default", template: "{controller}/{action=index}/{id}");
      });

      app.UseSpa(spa =>
      {
        spa.Options.SourcePath = "wwwroot";
      });

    }
  }
}

我不使用angular和其他一些，只是尝试打开wwwroot / index.html

文件：

currencyProject
wwwroot

Program.cs

Startup.cs

在VS中进行了测试，可以正常运行，但不能通过exe构建器

像dev一样启动：运行dotnet，然后在localhost：58893 /上运行，但是prod dotnet在localhost：5000上生成的问题

启动设置：

{
  "iisSettings": {
    "windowsAuthentication": false,
    "anonymousAuthentication": true,
    "iisExpress": {
      "applicationUrl": "http://localhost:58842/",
      "sslPort": 0
    }
  },
  "profiles": {
    "IIS Express": {
      "commandName": "IISExpress",
      "launchBrowser": true,
      "environmentVariables": {
        "ASPNETCORE_ENVIRONMENT": "Development"
      }
    },
    "AspNetCore2Ang6Template": {
      "commandName": "Project",
      "launchBrowser": true,
      "environmentVariables": {
        "ASPNETCORE_ENVIRONMENT": "Development"
      },
      "applicationUrl": "http://localhost:58893/"
    }
  }
}

Answer 1

检查angular.json文件是否使用"outputPath": "dist",

启动文件

 services.AddSpaStaticFiles(configuration =>
      {
        configuration.RootPath = "ClientApp/dist";
      });

Answer 2

通过比较现有的Angular Asp网络核心模板解决了此问题，我做了以下代码更改。

在csproj文件中：

<TypeScriptCompileBlocked>true</TypeScriptCompileBlocked>
 <TypeScriptToolsVersion>Latest</TypeScriptToolsVersion>
 <IsPackable>false</IsPackable>
 <SpaRoot>ClientApp\</SpaRoot>
 <DefaultItemExcludes>$(DefaultItemExcludes);$(SpaRoot)node_modules\**</DefaultItemExcludes>

 <!-- Set this to true if you enable server-side prerendering -->
 <BuildServerSideRenderer>false</BuildServerSideRenderer>
 <UserSecretsId>baa2f579-d2a7-4eb4-89fb-1c171b2e2482</UserSecretsId>
 <TypeScriptToolsVersion>3.0</TypeScriptToolsVersion>

<ItemGroup>
 <TypeScriptCompile Include="App\src\app\models\user.ts" />
 <TypeScriptCompile Include="App\src\app\utils\AppContants.ts" />
 <!-- Don't publish the SPA source files, but do show them in the project files list -->
 <Content Remove="$(SpaRoot)**" />
 <None Include="$(SpaRoot)**" Exclude="$(SpaRoot)node_modules\**" />
</ItemGroup>

<ItemGroup>
 <Folder Include="Properties\PublishProfiles\" />
</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="ng build --prod" />
 <Exec WorkingDirectory="$(SpaRoot)" Command="npm run build:ssr -- --prod" Condition=" '$(BuildServerSideRenderer)' == 'true' " />

 <!-- Include the newly-built files in the publish output -->
 <ItemGroup>
   <DistFiles Include="$(SpaRoot)dist\**; $(SpaRoot)dist-server\**" />
   <DistFiles Include="$(SpaRoot)node_modules\**" Condition="'$(BuildServerSideRenderer)' == 'true'" />
   <ResolvedFileToPublish Include="@(DistFiles->'%(FullPath)')" Exclude="@(ResolvedFileToPublish)">
     <RelativePath>%(DistFiles.Identity)</RelativePath>
     <CopyToPublishDirectory>PreserveNewest</CopyToPublishDirectory>
   </ResolvedFileToPublish>
 </ItemGroup>
</Target>

在Startup.cs中

services.AddSpaStaticFiles(configuration =>
            {
                configuration.RootPath = "ClientApp/dist";
            });

 app.UseSpa(spa =>
            {
                spa.Options.SourcePath = "ClientApp";
                if (env.IsDevelopment())
                {
                    spa.UseAngularCliServer(npmScript: "start");
                }
            });

在Angular Package.json中

 "options": {
    "outputPath": "dist",

Answer 3

问题出在使用dotnet build命令构建项目时，不会复制wwwroot文件夹。

我重现了您的问题，要解决此问题，我在输出中复制了该文件夹，它就可以正常工作。

您应该使用publish命令测试生产。

在两种情况下，这两个命令都不会复制wwwroot文件夹。

这里是解决方法：https://github.com/aspnet/websdk/issues/114

Answer 4

这是我在git分支切换后发生的事情。
我不得不再次安装节点模块：

npm install

来自GitHub上的answer。请注意，只有在将Node.js用作前端堆栈的一部分时，此解决方案才有帮助。

Answer 5

就我而言，这是因为我添加了一个名为“LocalDevelopment”的新环境，但没有更新 Startup.cs 中 IsEnvironment 调用的目标

class VariablesForm(forms.ModelForm):
    class Meta:
        model = Variables
        fields = ['dep_var', 'dv_reminder' ]
        labels = {'dep_var':'Dependent variable to track', 'dv_reminder': 'Type of measure'}

class DailyEntryForm(forms.ModelForm):
    class Meta:
        model = Entry
        var = Variables.dep_var
        fields = ['dep_variables', 'data', 'date']
        labels = {'dep_variables': 'Dependent variable you are tracking',
                    'data': 'Daily entry', 'date': 'Date'}

dotnet构建-收到错误“无法返回默认页面'/index.html'”

5 个答案: