ASP.NET：配置错误（“/”应用程序中的服务器错误。）

Question

这个错误让我发疯了！我在我的registration.aspx 页面上工作，突然间出现了这个错误，我花了几天时间来解决它，但没有任何效果！最后我删除了我的registration.aspx，只是为了检查项目在没有它的情况下是否仍然有效，但没有任何改变！

错误在第 15 行显示为红色：

> Server Error in '/' Application.
> 
> Configuration Error
> 
> Description: An error occurred during the processing of a
> configuration file required to service this request. Please review the
> specific error details below and modify your configuration file
> appropriately. 
> 
> Parser Error Message: Unrecognized element 'authentication'.
> 
> Source Error: 
> 
> 
> Line 13:   <system.web> 
> Line 14:     <pages validateRequest="false">
> Line 15:       <authentication mode="None"/> 
> Line 16:         <compilation debug="true" targetFramework="4.5"/> 
> Line 17:            <httpRuntime targetFramework="4.5"/>

web.config 页面：

<?xml version="1.0"?>
<!--
  For more information on how to configure your ASP.NET application, please visit
  http://go.microsoft.com/fwlink/?LinkId=169433
  -->
<configuration>
  <configSections>
    <section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false"/>
  </configSections>
  <connectionStrings>
    <add name="MyDatabase" connectionString="Data Source=(LocalDB)\v11.0;AttachDbFilename=C:\Users\user\Desktop\MyWebsite\MyWebsite\MyWebsite\App_Data\MyDatabase.mdf;Integrated Security=True" providerName="System.Data.SqlClient"/>
  </connectionStrings>
  <system.web>
    <pages validateRequest="false">
      <authentication mode="None"/>
      <compilation debug="true" targetFramework="4.5"/>
      <httpRuntime targetFramework="4.5"/>
      <namespaces>
        <add namespace="System.Web.Optimization"/>
        <add namespace="Microsoft.AspNet.Identity"/>
      </namespaces>
      <controls>
        <add assembly="Microsoft.AspNet.Web.Optimization.WebForms" namespace="Microsoft.AspNet.Web.Optimization.WebForms" tagPrefix="webopt"/>
      </controls>
    </pages>
    <membership>
      <providers>
        <!--
        ASP.NET Membership is disabled in this template. Please visit the following link http://go.microsoft.com/fwlink/?LinkId=301889 to learn about the ASP.NET Membership support in this template
        -->
        <clear/>
      </providers>
    </membership>
    <profile>
      <providers>
        <!--
        ASP.NET Membership Profile is disabled in this template. Please visit the following link http://go.microsoft.com/fwlink/?LinkId=301889 to learn about the ASP.NET Membership support in this template
        -->
        <clear/>
      </providers>
    </profile>
    <roleManager>
      <!--
          ASP.NET Membership Role is disabled in this template. Please visit the following link http://go.microsoft.com/fwlink/?LinkId=301889 to learn about the ASP.NET Membership support in this template
        -->
      <providers>
        <clear/>
      </providers>
    </roleManager>
    <!--
            If you are deploying to a cloud environment that has multiple web server instances,
            you should change session state mode from "InProc" to "Custom". In addition,
            change the connection string named "DefaultConnection" to connect to an instance
            of SQL Server (including SQL Azure and SQL  Compact) instead of to SQL Server Express.
      -->
    <sessionState mode="InProc" customProvider="DefaultSessionProvider">
      <providers>
        <add name="DefaultSessionProvider" type="System.Web.Providers.DefaultSessionStateProvider, System.Web.Providers, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" connectionStringName="DefaultConnection"/>
      </providers>
    </sessionState>
    <compilation debug="true"/>
  </system.web>
  <system.webServer>
    <modules>
      <remove name="FormsAuthentication"/>
    </modules>
  </system.webServer>
  <runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
      <dependentAssembly>
        <assemblyIdentity name="Newtonsoft.Json" culture="neutral" publicKeyToken="30ad4fe6b2a6aeed"/>
        <bindingRedirect oldVersion="0.0.0.0-6.0.0.0" newVersion="6.0.0.0"/>
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="WebGrease" culture="neutral" publicKeyToken="31bf3856ad364e35"/>
        <bindingRedirect oldVersion="0.0.0.0-1.5.2.14234" newVersion="1.5.2.14234"/>
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="EntityFramework" publicKeyToken="b77a5c561934e089"/>
        <bindingRedirect oldVersion="0.0.0.0-6.0.0.0" newVersion="6.0.0.0"/>
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Microsoft.Owin" culture="neutral" publicKeyToken="31bf3856ad364e35"/>
        <bindingRedirect oldVersion="0.0.0.0-3.0.0.0" newVersion="3.0.0.0"/>
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Microsoft.Owin.Security.OAuth" culture="neutral" publicKeyToken="31bf3856ad364e35"/>
        <bindingRedirect oldVersion="0.0.0.0-3.0.0.0" newVersion="3.0.0.0"/>
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Microsoft.Owin.Security.Cookies" culture="neutral" publicKeyToken="31bf3856ad364e35"/>
        <bindingRedirect oldVersion="0.0.0.0-3.0.0.0" newVersion="3.0.0.0"/>
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Microsoft.Owin.Security" culture="neutral" publicKeyToken="31bf3856ad364e35"/>
        <bindingRedirect oldVersion="0.0.0.0-3.0.0.0" newVersion="3.0.0.0"/>
      </dependentAssembly>
    </assemblyBinding>
  </runtime>
  <entityFramework>
    <defaultConnectionFactory type="System.Data.Entity.Infrastructure.LocalDbConnectionFactory, EntityFramework">
      <parameters>
        <parameter value="mssqllocaldb"/>
      </parameters>
    </defaultConnectionFactory>
    <providers>
      <provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer"/>
    </providers>
  </entityFramework>
  <appSettings>
    <!-- Beta configuration -->
    <add key="STSHost" value="auth.beta.agiv.be"/>
    <!-- See documentation https://auth.beta.agiv.be/framework/Documentation/index.html for a list of consumable services and their realms -->
    <add key="STSRealm" value="urn:agiv.be/salvador"/>
    <add key="ApplicationRealm" value="%Application realm%"/>
    <!-- Production Configuration, uncomment for use -->
    <!--
      <add key="STSHost" value="auth.agiv.be"/> 
      <add key="STSRealm" value="urn:agiv.be/sts"/>       
      <add key="ApplicationRealm" value="%Application realm%"/>
    -->
  </appSettings>
  <system.serviceModel>
    <client/>
    <behaviors>
      <endpointBehaviors>
        <behavior name="CertificateEndpointBehavior">
          <clientCredentials>
            <!-- Change this value to your certificate, and put this behavior on your client endpoint-->
            <clientCertificate findValue="%Certificate Subject Distinguished Name%" storeLocation="LocalMachine" storeName="My" x509FindType="FindBySubjectDistinguishedName"/>
          </clientCredentials>
        </behavior>
      </endpointBehaviors>
    </behaviors>
  </system.serviceModel>
</configuration>

请帮忙？

Answer 1

<authentication> 不是<pages> 的子级，它应该嵌套在<system.web> 中

compilation 和httpRuntime 也需要移出。

试试这个

 <authentication mode="None"/>
 <compilation debug="true" targetFramework="4.5"/>
 <httpRuntime targetFramework="4.5"/>
 <pages validateRequest="false">
      <namespaces>
        <add namespace="System.Web.Optimization"/>
        <add namespace="Microsoft.AspNet.Identity"/>
      </namespaces>
      <controls>
        <add assembly="Microsoft.AspNet.Web.Optimization.WebForms" namespace="Microsoft.AspNet.Web.Optimization.WebForms" tagPrefix="webopt"/>
      </controls>
    </pages>

您还有两个compilation 属性。删除第二个。

Answer 2

错误告诉您它无法识别<pages> 下的<authentication> 元素。那是因为<authentication> 需要直接在<system.web> 之下。

<configuration>
    <system.web>
        <authentication mode="None" /> <!-- This is the line that needed to be moved -->
        <compilation debug="true" targetFramework="4.5"/>
        <httpRuntime targetFramework="4.5"/>
        <pages validateRequest="false">                
            <namespaces>
                <add namespace="System.Web.Optimization"/>
                <add namespace="Microsoft.AspNet.Identity"/>
            </namespaces>
            <controls>
                <add assembly="Microsoft.AspNet.Web.Optimization.WebForms" namespace="Microsoft.AspNet.Web.Optimization.WebForms" tagPrefix="webopt"/>
            </controls>
        </pages>
    </system.web>
</configuration>

当您遇到此类错误时，请务必注意错误消息和check the documentation。

Answer 3

检查应用程序池，看起来您已将其置于集成模式而不是经典模式。