从 Core 2.2 升级到 ASP.NET Core 3.0 后 IIS 配置错误答案

【问题标题】：IIS config error after upgrading to ASP.NET Core 3.0 from Core 2.2从 Core 2.2 升级到 ASP.NET Core 3.0 后 IIS 配置错误
【发布时间】：2020-03-13 21:37:12
【问题描述】：

如果我的 web 项目升级到 asp.net core 3.0 并尝试将它们推送到 IIS web 服务器，我升级了一些。我安装了 .net core 3.0 托管包和运行时并卸载了旧版本以防万一。

我尝试加载页面，但出现错误：

HTTP Error 500.19 - Internal Server Error
The requested page cannot be accessed because the related configuration data for the page is invalid.
Error Code     0x8007000d
Config Error       
Config File    \\?\C:\inetpub\MySite\web.config

下面是我的 web.config：

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <location path="." inheritInChildApplications="false">
    <system.webServer>
      <handlers>
        <add name="aspNetCore" path="*" verb="*" modules="AspNetCoreModuleV2" resourceType="Unspecified" />
      </handlers>
      <aspNetCore processPath="dotnet" arguments=".\MySite.dll" stdoutLogEnabled="false" stdoutLogFile=".\logs\stdout" hostingModel="">
        <environmentVariables>
          <environmentVariable name="EXCLUDED_LINE" value="Test" />
          <environmentVariable name="COMPLUS_ForceENC" value="1" />
        </environmentVariables>
      </aspNetCore>
    </system.webServer>
  </location>
</configuration>

除了 .net 版本之外，我没有更改服务器上的任何其他内容 - 我正在直接替换之前的工作项目。

startup.cs：

using System;
using FluentValidation;
using FluentValidation.AspNetCore;
using Microsoft.AspNetCore.Authentication;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Server.IISIntegration;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;

namespace MySite
{
    public class Startup
    {
        public Startup(IConfiguration configuration)
        {
            Configuration = configuration;
        }

        public IConfiguration Configuration { get; }

        // This method gets called by the runtime. Use this method to add services to the container.
        public void ConfigureServices(IServiceCollection services)
        {
            services.Configure<CookiePolicyOptions>(options =>
            {
                // This lambda determines whether user consent for non-essential cookies is needed for a given request.
                options.CheckConsentNeeded = context => true;
                options.MinimumSameSitePolicy = SameSiteMode.None;
            });

            services.AddAuthentication(IISDefaults.AuthenticationScheme);

            services.AddTransient<IClaimsTransformation, CustomClaimsTransformer>();

            services.AddSingleton<IAuthorizationHandler, CheckADGroupHandler>();

            services.AddRazorPages().AddFluentValidation();

            services.AddDbContext<MyContext>(options =>
                options.UseSqlServer(
                    "Data Source=MYSERVER\\SQLEXPRESS;Initial Catalog=MyDB;Integrated Security=True;Connect Timeout=30;Encrypt=False;TrustServerCertificate=False;ApplicationIntent=ReadWrite;MultiSubnetFailover=False"));
        }

            // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }
            else
            {
                app.UseExceptionHandler("/Error");
                app.UseHsts();
            }

            app.UseRouting();
            app.UseAuthentication();
            app.UseAuthorization();

            app.UseEndpoints(endpoints => endpoints.MapRazorPages());

            app.UseHttpsRedirection();
            app.UseStaticFiles();
            app.UseCookiePolicy();

        }
    }
}

项目：

<Project Sdk="Microsoft.NET.Sdk.Web">

  <PropertyGroup>
    <TargetFramework>netcoreapp3.0</TargetFramework>
    <AspNetCoreHostingModel>InProcess</AspNetCoreHostingModel>
    <AssemblyName>MySite</AssemblyName>
    <RootNamespace>MySite</RootNamespace>
    <LangVersion>8</LangVersion>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="BuildBundlerMinifier" Version="2.9.406" />
    <PackageReference Include="FluentValidation.AspNetCore" Version="8.5.0" />
    <PackageReference Include="Microsoft.AspNetCore.Razor.Language" Version="3.0.0" />
    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="3.0.0" />
    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="3.0.0" />
    <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="3.0.0" />
    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="3.0.0" />
    <PackageReference Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="3.0.0" />
    <PackageReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Design" Version="2.2.3" />
    <PackageReference Include="Microsoft.Windows.Compatibility" Version="3.0.0" />
    <PackageReference Include="NLog" Version="4.6.2" />
    <PackageReference Include="NLog.Targets.Syslog" Version="5.1.0" />
    <PackageReference Include="NLog.Web.AspNetCore" Version="4.8.1" />
  </ItemGroup>

  <ItemGroup>
    <Folder Include="wwwroot\css" />
    <Folder Include="wwwroot\webfonts\" />
  </ItemGroup>

</Project>

我厌倦了手动将其复制到测试 IIS 并且大多数页面只显示错误 500，尽管我可以浏览 web.config。

【问题讨论】：

您能否检查事件日志中是否存在 IIS 组或应用程序组中的任何错误？
事件日志本身似乎没有错误，但我厌倦了再次打开站点的配置编辑器，它甚至无法加载 - 它显示“数据无效”并显示空白屏幕。它显然不喜欢上面 web.config 的格式 - core 3.0 有什么变化吗？
500.19 错误页面应突出显示配置文件中的错误行。它报告了哪条线路？编辑您的问题以包含它。
不幸的是，它没有突出任何东西 - 这就是我完全卡住的原因。该框字面上只是说 Config Source: -1: 0: '.
听起来 IIS 网络托管捆绑包未正确安装。您是否检查过 aspnetcore 模块是否映射到正确的位置？也许进程监视器可以帮助您找出根本原因。docs.microsoft.com/en-us/sysinternals/downloads/procmon

标签： iis asp.net-core-3.0

【解决方案1】：

我在新服务器和在安装 3.0 之前卸载核心 2.2 的服务器上都遇到了这个问题。最终我找到了一个可以工作的服务器，并意识到我忘记卸载旧的托管包，所以它同时具有 2.2 和 3.0

最后，我通过在服务器上安装 asp.net core 2.2 托管包以及 asp.net core 3.0 托管来修复它。网站现在运行良好。

【讨论】：