无法找到或加载已注册的.Net Framework数据提供程序

Question

我收到以下错误：“无法找到或加载注册的.Net Framework数据提供程序”。这仅发生在AppHarbor服务器，而不是我的本地

我使用的.Net mvc4和MySQL

我加入MySql.Data，MySql.Data.Entity，MySql.Web引用和设置复制本地=真。我也推bin文件夹中AppHarbor

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=5.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false"/> 
    </configSections> 
    <system.data> 
    <DbProviderFactories> 
     <remove invariant="MySql.Data.MySqlClient"/> 
     <add name="MySQL Data Provider" invariant="MySql.Data.MySqlClient" description=".Net Framework Data Provider for MySQL" type="MySql.Data.MySqlClient.MySqlClientFactory, MySql.Data, Version=6.5.4.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d"/> 
    </DbProviderFactories> 
    </system.data> 
    <connectionStrings> 
    <add name="fmcdatabaseEntities" connectionString="metadata=res://*/Models.FMCEntityDataModel.csdl|res://*/Models.FMCEntityDataModel.ssdl|res://*/Models.FMCEntityDataModel.msl;provider=MySql.Data.MySqlClient;provider connection string=&quot;server=****;uid=****;port=3306;database=****&quot;" providerName="System.Data.EntityClient"/> 
    </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"/> 
    <add key="enableSimpleMembership" value="false"/> 
    <add key="autoFormsAuthentication" value="false"/> 
    </appSettings> 
    <system.web> 
    <compilation debug="true" targetFramework="4.5"> 
     <assemblies> 
     <add assembly="System.Data.Entity, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" /> 
     </assemblies> 
    </compilation> 
    <httpRuntime targetFramework="4.5" /> 
    <authentication mode="Forms"> 
     <forms loginUrl="~/Account/Login" timeout="2880"/> 
    </authentication> 
    <membership defaultProvider="CustomMembershipProvider"> 
     <providers> 
     <clear/> 
     <add name="CustomMembershipProvider" type="FindMyCrushServer.Controllers.ControllerHelpers.CustomMembershipProvider" connectionStringName="fmcdatabaseEntities" applicationName="FindMyCrushServer" enablePasswordRetrieval="false" enablePasswordReset="false" requiresQuestionAndAnswer="false" requiresUniqueEmail="false" passwordFormat="Clear"/> 
     </providers> 
    </membership> 
    <roleManager defaultProvider="CustomRoleProvider" enabled="true" cacheRolesInCookie="false"> 
     <providers> 
     <clear/> 
     <add name="CustomRoleProvider" type="FindMyCrushServer.Controllers.ControllerHelpers.CustomRoleProvider"/> 
     </providers> 
    </roleManager> 
    <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> 
    </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="0.0.0.0-4.0.0.0" 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> 
    </assemblyBinding> 
    </runtime> 
    <entityFramework> 
    <defaultConnectionFactory type="System.Data.Entity.Infrastructure.SqlConnectionFactory, EntityFramework"/> 
    </entityFramework> 
</configuration> 

任何帮助，真的很感谢。在此先感谢

Answer 1

您是否尝试过使用NuGet软件包？

• http://nuget.org/packages/MySql.Data
• http://nuget.org/packages/MySQL.Data.Entities

...他们应该确保正确的位去需要的地方去。您可以使用NuGet package restore来避免将包装内容推送到AppHarbor。

Answer 2

我刚才看到在我的例子中这个异常的原因是dll和配置条目之间的差异版本。

所以，有时你实际拥有的dll（或者通过nuget或者其他方式安装）不同于app.config节点中的条目。 此部分，如果不是在app.config中，也可以

Windows\Microsoft.NET\Framework64\v4.0.30319\Config\machine.config and nearby folders.

下找到了进入该DLL的版本更改版本解决了这个问题。

Answer 3

谢谢，我想在web.config中的DB提供工厂是固定

<system.data> 
    <DbProviderFactories> 
     <remove invariant="MySql.Data.MySqlClient" /> 
     <add name="MySQL Data Provider" invariant="MySql.Data.MySqlClient" description=".Net Framework Data Provider for MySQL" type="MySql.Data.MySqlClient.MySqlClientFactory, MySql.Data, Version=6.9.5.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d" /> 
    </DbProviderFactories> 
</system.data> 

Answer 4

对于我来说，我的NuGet犯规在我的项目/ bin中添加必要的DLL。因此，将所有缺少的DLL从包文件夹粘贴到bin文件夹可以解决此问题。