定义了一个重复的"entityFramework"部分 - EntityFramework6升级

Question

我最近在我的WebAPI项目中更新了从v5到v6的EntityFramework.不幸的是,似乎某个地方,不知何故,某个配置中存在一个设置为v5.0的引用.我似乎无法找到它; 我将在下面发布我的web.config.

显示的错误是:

定义了重复的"entityFramework"部分.

我找不到重复的引用,但是如果我删除了单个引用,那么我会收到一条错误说:

{"Message":"发生错误.","ExceptionMessage":"无法加载文件或程序集'EntityFramework,Version = 5.0.0.0,Culture = neutral,PublicKeyToken = b77a5c561934e089'或其依赖项之一.找到的程序集manifest定义与程序集引用不匹配.(HRESULT异常:0x80131040)","ExceptionType":"System.IO.FileLoadException","StackTrace":"at System.Configuration.TypeUtil.GetTypeWithReflectionPermission(IInternalConfigHost host,String typeString,布尔值throwOnError)\ r \n在System.Configuration.RuntimeConfigurationRecord.RuntimeConfigurationFactory.Init(RuntimeConfigurationRecord configRecord,FactoryRecord factoryRecord)\ r \n在System.Configuration.RuntimeConfigurationRecord.RuntimeConfigurationFactory.在System.Configuration.BaseConfigurationRecord.FindAndEnsureFactoryRecord(String configKey,Boolean&isRootDeclaredHere)的System.Configuration.RuntimeConfigurationRecord.CreateSectionFactory(FactoryRecord factoryRecord)\ r \n的InitWithRestrictedPermissions(RuntimeConfigurationRecord configRecord,FactoryRecord factoryRecord)\ r \n

这是我的web.config:

<?xml version="1.0" encoding="utf-8"?>
    <configuration>
      <configSections>
        <section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
        <!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
      </configSections>
      <connectionStrings></connectionStrings>
      <appSettings>
        <add key="webpages:Version" value="2.0.0.0" />
        <add key="webpages:Enabled" value="false" />
        <add key="PreserveLoginUrl" value="true" />
        <add key="ClientValidationEnabled" value="true" />
        <add key="UnobtrusiveJavaScriptEnabled" value="true" />
      </appSettings>
      <system.web>
        <compilation debug="true" targetFramework="4.5" />
        <httpRuntime targetFramework="4.5" />
        <authentication mode="None" />
        <pages>
          <namespaces>
            <add namespace="System.Web.Helpers" />
            <add namespace="System.Web.Mvc" />
            <add namespace="System.Web.Mvc.Ajax" />
            <add namespace="System.Web.Mvc.Html" />
            <add namespace="System.Web.Optimization" />
            <add namespace="System.Web.Routing" />
            <add namespace="System.Web.WebPages" />
          </namespaces>
        </pages>
        <profile defaultProvider="DefaultProfileProvider">
          <providers>
            <add name="DefaultProfileProvider" type="System.Web.Providers.DefaultProfileProvider, System.Web.Providers, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" connectionStringName="DefaultConnection" applicationName="/" />
          </providers>
        </profile>
        <membership defaultProvider="DefaultMembershipProvider">
          <providers>
            <add name="DefaultMembershipProvider" type="System.Web.Providers.DefaultMembershipProvider, System.Web.Providers, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" connectionStringName="DefaultConnection" enablePasswordRetrieval="false" enablePasswordReset="true" requiresQuestionAndAnswer="false" requiresUniqueEmail="false" maxInvalidPasswordAttempts="5" minRequiredPasswordLength="6" minRequiredNonalphanumericCharacters="0" passwordAttemptWindow="10" applicationName="/" />
          </providers>
        </membership>
        <roleManager defaultProvider="DefaultRoleProvider">
          <providers>
            <add name="DefaultRoleProvider" type="System.Web.Providers.DefaultRoleProvider, System.Web.Providers, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" connectionStringName="DefaultConnection" applicationName="/" />
          </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=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" connectionStringName="DefaultConnection" />
          </providers>
        </sessionState>
      </system.web>
      <system.webServer>
        <validation validateIntegratedModeConfiguration="false" />
        <handlers>
          <remove name="ExtensionlessUrlHandler-ISAPI-4.0_32bit" />
          <remove name="ExtensionlessUrlHandler-ISAPI-4.0_64bit" />
          <remove name="ExtensionlessUrlHandler-Integrated-4.0" />
          <add name="ExtensionlessUrlHandler-ISAPI-4.0_32bit" path="*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" modules="IsapiModule" scriptProcessor="%windir%\Microsoft.NET\Framework\v4.0.30319\aspnet_isapi.dll" preCondition="classicMode,runtimeVersionv4.0,bitness32" responseBufferLimit="0" />
          <add name="ExtensionlessUrlHandler-ISAPI-4.0_64bit" path="*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" modules="IsapiModule" scriptProcessor="%windir%\Microsoft.NET\Framework64\v4.0.30319\aspnet_isapi.dll" preCondition="classicMode,runtimeVersionv4.0,bitness64" responseBufferLimit="0" />
          <add name="ExtensionlessUrlHandler-Integrated-4.0" path="*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" type="System.Web.Handlers.TransferRequestHandler" preCondition="integratedMode,runtimeVersionv4.0" />
        </handlers>
      </system.webServer>
      <runtime>
        <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
          <dependentAssembly>
            <assemblyIdentity name="System.Web.Helpers" publicKeyToken="31bf3856ad364e35" />
            <bindingRedirect oldVersion="1.0.0.0-2.0.0.0" newVersion="2.0.0.0" />
          </dependentAssembly>
          <dependentAssembly>
            <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" />
            <bindingRedirect oldVersion="1.0.0.0-4.0.0.0" newVersion="4.0.0.0" />
          </dependentAssembly>
          <dependentAssembly>
            <assemblyIdentity name="System.Web.WebPages" publicKeyToken="31bf3856ad364e35" />
            <bindingRedirect oldVersion="1.0.0.0-2.0.0.0" newVersion="2.0.0.0" />
          </dependentAssembly>
          <dependentAssembly>
            <assemblyIdentity name="WebGrease" publicKeyToken="31bf3856ad364e35" culture="neutral" />
            <bindingRedirect oldVersion="0.0.0.0-1.3.0.0" newVersion="1.3.0.0" />
          </dependentAssembly>
        </assemblyBinding>
      </runtime>
      <entityFramework>
        <defaultConnectionFactory type="System.Data.Entity.Core.Entity.Infrastructure.LocalDbConnectionFactory, EntityFramework">
          <parameters>
            <parameter value="v11.0" />
          </parameters>
        </defaultConnectionFactory>
        <providers>
          <provider invariantName="System.Data.Entity.Core.SqlClient" type="System.Data.Entity.Core.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
        </providers>
      </entityFramework>
    </configuration>

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Answer 1

我遇到了运行EF6的虚拟目录和运行EF5的根目录时遇到的完全相同的问题.花了我几个小时,但我发现了一个问题:

在虚拟目录Web.config中,删除/注释掉EF6的configSection(这会阻止您复制entityFramework部分),添加程序集绑定重定向(因此它将根的EF5 configSection映射到EF6,但只在虚拟目录中)最后删除所有<entityFramework>配置,以便它不会尝试在虚拟目录中查找EF6的configSection.我的新Web.config文件如下所示:

<configuration>
  <!--<configSections>
    <section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
     --><!--For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468--><!-- 
  </configSections>-->

... rest of configuration ...

  <runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
      <dependentAssembly>
        <assemblyIdentity name="EntityFramework" publicKeyToken="b77a5c561934e089" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-5.0.0.0" newVersion="6.0.0.0" />
      </dependentAssembly>
    </assemblyBinding>
  </runtime>
  <!--<entityFramework>
    <defaultConnectionFactory type="System.Data.Entity.Infrastructure.SqlConnectionFactory, EntityFramework">
      <parameters>
        <parameter value="Data Source=(localdb)\v11.0; Integrated Security=True; MultipleActiveResultSets=True" />
      </parameters>
    </defaultConnectionFactory>
    <providers>
      <provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
    </providers>
  </entityFramework>-->

接下来,我将DbConfiguration类添加到包含DbContext的程序集中(这基本上启用了EF6代码的首次配置).例如:

public class MyConfiguration : DbConfiguration
{
    public MyConfiguration()
    {
        SetDefaultConnectionFactory(new SqlConnectionFactory("Data Source=(localdb)\v11.0; Integrated Security=True; MultipleActiveResultSets=True"));
    }
}

就是这样,现在我可以让两个EF版本相互协作.对我来说棘手的部分是弄清楚如何从EF5到EF6重定向进行AssemblyBinding.另请注意,我没有在根Web.config中更改任何内容.

希望这可以帮助那些有同样问题的人.

Answer 2

问题与网站的根目录有关; 我忘了它指向另一个相关项目,该项目映射到虚拟目录.这导致正在加载另一个web.config.