获取错误：无法找到所请求的.Net Framework数据提供程序，从而在AppHarbor上获得新的MVC4应用程序。它可能没有安装

时间：2013-08-06 19:47:58

标签： c# asp.net-mvc-4 entity-framework-5 appharbor

我已经使用Git向AppHarbor部署了一个MVC4应用程序，并在我的AppHarbor应用程序项目中添加了SQL Server插件。该项目构建得很好，当我导航到我的应用程序的URL并单击“登录”按钮时，我得到了

    Unable to find the requested .Net Framework Data Provider.  It may not be installed.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. 

Exception Details: System.ArgumentException: Unable to find the requested .Net Framework Data Provider.  It may not be installed.

Source Error: 

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace: 


[ArgumentException: Unable to find the requested .Net Framework Data Provider.  It may not be installed.]
   System.Data.Common.DbProviderFactories.GetFactory(String providerInvariantName) +77
   WebMatrix.Data.DbProviderFactoryWrapper.CreateConnection(String connectionString) +48
   WebMatrix.Data.<>c__DisplayClass15.<OpenConnectionStringInternal>b__14() +16
   WebMatrix.Data.Database.get_Connection() +19
   WebMatrix.Data.Database.EnsureConnectionOpen() +13
   WebMatrix.Data.<QueryInternal>d__0.MoveNext() +66
   System.Linq.Enumerable.FirstOrDefault(IEnumerable`1 source) +183
   WebMatrix.Data.Database.QuerySingle(String commandText, Object[] args) +44
   WebMatrix.WebData.DatabaseWrapper.QuerySingle(String commandText, Object[] parameters) +14
   WebMatrix.WebData.SimpleMembershipProvider.CheckTableExists(IDatabase db, String tableName) +54
   WebMatrix.WebData.SimpleMembershipProvider.CreateTablesIfNeeded() +57
   WebMatrix.WebData.WebSecurity.InitializeMembershipProvider(SimpleMembershipProvider simpleMembership, DatabaseConnectionInfo connect, String userTableName, String userIdColumn, String userNameColumn, Boolean createTables) +81
   WebMatrix.WebData.WebSecurity.InitializeProviders(DatabaseConnectionInfo connect, String userTableName, String userIdColumn, String userNameColumn, Boolean autoCreateTables) +52
   WebMatrix.WebData.WebSecurity.InitializeDatabaseConnection(String connectionStringName, String userTableName, String userIdColumn, String userNameColumn, Boolean autoCreateTables) +60
   ExploreGame01.Filters.SimpleMembershipInitializer..ctor() in d:\temp\uoppttzv.jeq\input\ExploreGame01\Filters\InitializeSimpleMembershipAttribute.cs:41

[InvalidOperationException: The ASP.NET Simple Membership database could not be initialized. For more information, please see http://go.microsoft.com/fwlink/?LinkId=256588]
   ExploreGame01.Filters.SimpleMembershipInitializer..ctor() in d:\temp\uoppttzv.jeq\input\ExploreGame01\Filters\InitializeSimpleMembershipAttribute.cs:45

[TargetInvocationException: Exception has been thrown by the target of an invocation.]
   System.RuntimeTypeHandle.CreateInstance(RuntimeType type, Boolean publicOnly, Boolean noCheck, Boolean& canBeCached, RuntimeMethodHandleInternal& ctor, Boolean& bNeedSecurityCheck) +0
   System.RuntimeType.CreateInstanceSlow(Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache, StackCrawlMark& stackMark) +159
   System.RuntimeType.CreateInstanceDefaultCtor(Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache, StackCrawlMark& stackMark) +251
   System.Activator.CreateInstance(Type type, Boolean nonPublic) +87
   System.Activator.CreateInstance(Type type) +6
   System.Threading.LazyHelpers`1.ActivatorFactorySelector() +68
   System.Threading.LazyInitializer.EnsureInitializedCore(T& target, Boolean& initialized, Object& syncLock, Func`1 valueFactory) +114
   System.Threading.LazyInitializer.EnsureInitialized(T& target, Boolean& initialized, Object& syncLock) +113
   ExploreGame01.Filters.InitializeSimpleMembershipAttribute.OnActionExecuting(ActionExecutingContext filterContext) in d:\temp\uoppttzv.jeq\input\ExploreGame01\Filters\InitializeSimpleMembershipAttribute.cs:21
   System.Web.Mvc.Async.AsyncControllerActionInvoker.InvokeActionMethodFilterAsynchronously(IActionFilter filter, ActionExecutingContext preContext, Func`1 nextInChain) +77
   System.Web.Mvc.Async.<>c__DisplayClass3b.<BeginInvokeActionMethodWithFilters>b__35() +22
   System.Web.Mvc.Async.AsyncControllerActionInvoker.InvokeActionMethodFilterAsynchronously(IActionFilter filter, ActionExecutingContext preContext, Func`1 nextInChain) +543
   System.Web.Mvc.Async.<>c__DisplayClass3b.<BeginInvokeActionMethodWithFilters>b__35() +22
   System.Web.Mvc.Async.<>c__DisplayClass37.<BeginInvokeActionMethodWithFilters>b__31(AsyncCallback asyncCallback, Object asyncState) +201
   System.Web.Mvc.Async.WrappedAsyncResult`1.Begin(AsyncCallback callback, Object state, Int32 timeout) +120
   System.Web.Mvc.Async.AsyncResultWrapper.Begin(AsyncCallback callback, Object state, BeginInvokeDelegate beginDelegate, EndInvokeDelegate`1 endDelegate, Object tag, Int32 timeout) +79
   System.Web.Mvc.Async.AsyncResultWrapper.Begin(AsyncCallback callback, Object state, BeginInvokeDelegate beginDelegate, EndInvokeDelegate`1 endDelegate, Object tag) +64
   System.Web.Mvc.Async.AsyncControllerActionInvoker.BeginInvokeActionMethodWithFilters(ControllerContext controllerContext, IList`1 filters, ActionDescriptor actionDescriptor, IDictionary`2 parameters, AsyncCallback callback, Object state) +162
   System.Web.Mvc.Async.<>c__DisplayClass25.<BeginInvokeAction>b__1e(AsyncCallback asyncCallback, Object asyncState) +512
   System.Web.Mvc.Async.WrappedAsyncResult`1.Begin(AsyncCallback callback, Object state, Int32 timeout) +120
   System.Web.Mvc.Async.AsyncResultWrapper.Begin(AsyncCallback callback, Object state, BeginInvokeDelegate beginDelegate, EndInvokeDelegate`1 endDelegate, Object tag, Int32 timeout) +52
   System.Web.Mvc.Async.AsyncResultWrapper.Begin(AsyncCallback callback, Object state, BeginInvokeDelegate beginDelegate, EndInvokeDelegate`1 endDelegate, Object tag) +19
   System.Web.Mvc.Async.AsyncControllerActionInvoker.BeginInvokeAction(ControllerContext controllerContext, String actionName, AsyncCallback callback, Object state) +252
   System.Web.Mvc.<>c__DisplayClass1d.<BeginExecuteCore>b__17(AsyncCallback asyncCallback, Object asyncState) +37
   System.Web.Mvc.Async.WrappedAsyncResult`1.Begin(AsyncCallback callback, Object state, Int32 timeout) +120
   System.Web.Mvc.Async.AsyncResultWrapper.Begin(AsyncCallback callback, Object state, BeginInvokeDelegate beginDelegate, EndInvokeDelegate`1 endDelegate, Object tag, Int32 timeout) +52
   System.Web.Mvc.Async.AsyncResultWrapper.Begin(AsyncCallback callback, Object state, BeginInvokeDelegate beginDelegate, EndInvokeDelegate endDelegate, Object tag, Int32 timeout) +37
   System.Web.Mvc.Async.AsyncResultWrapper.Begin(AsyncCallback callback, Object state, BeginInvokeDelegate beginDelegate, EndInvokeDelegate endDelegate, Object tag) +19
   System.Web.Mvc.Controller.BeginExecuteCore(AsyncCallback callback, Object state) +284
   System.Web.Mvc.Async.WrappedAsyncResult`1.Begin(AsyncCallback callback, Object state, Int32 timeout) +120
   System.Web.Mvc.Async.AsyncResultWrapper.Begin(AsyncCallback callback, Object state, BeginInvokeDelegate beginDelegate, EndInvokeDelegate`1 endDelegate, Object tag, Int32 timeout) +52
   System.Web.Mvc.Async.AsyncResultWrapper.Begin(AsyncCallback callback, Object state, BeginInvokeDelegate beginDelegate, EndInvokeDelegate endDelegate, Object tag, Int32 timeout) +37
   System.Web.Mvc.Async.AsyncResultWrapper.Begin(AsyncCallback callback, Object state, BeginInvokeDelegate beginDelegate, EndInvokeDelegate endDelegate, Object tag) +19
   System.Web.Mvc.Controller.BeginExecute(RequestContext requestContext, AsyncCallback callback, Object state) +242
   System.Web.Mvc.Controller.System.Web.Mvc.Async.IAsyncController.BeginExecute(RequestContext requestContext, AsyncCallback callback, Object state) +15
   System.Web.Mvc.<>c__DisplayClass8.<BeginProcessRequest>b__2(AsyncCallback asyncCallback, Object asyncState) +76
   System.Web.Mvc.Async.WrappedAsyncResult`1.Begin(AsyncCallback callback, Object state, Int32 timeout) +120
   System.Web.Mvc.Async.AsyncResultWrapper.Begin(AsyncCallback callback, Object state, BeginInvokeDelegate beginDelegate, EndInvokeDelegate`1 endDelegate, Object tag, Int32 timeout) +52
   System.Web.Mvc.Async.AsyncResultWrapper.Begin(AsyncCallback callback, Object state, BeginInvokeDelegate beginDelegate, EndInvokeDelegate endDelegate, Object tag, Int32 timeout) +37
   System.Web.Mvc.Async.AsyncResultWrapper.Begin(AsyncCallback callback, Object state, BeginInvokeDelegate beginDelegate, EndInvokeDelegate endDelegate, Object tag) +19
   System.Web.Mvc.MvcHandler.BeginProcessRequest(HttpContextBase httpContext, AsyncCallback callback, Object state) +176
   System.Web.Mvc.MvcHandler.BeginProcessRequest(HttpContext httpContext, AsyncCallback callback, Object state) +48
   System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.BeginProcessRequest(HttpContext context, AsyncCallback cb, Object extraData) +16
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +875
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +234

从其他帖子我可以看出，我的数据库连接字符串出现问题。但是，我已经从AppHarbor复制了提供的连接字符串并将其放入我的web.config中。

到目前为止，我只在localhost上运行我的应用程序，一切都运行得很好。 有人可以提供一些建议吗？

1 个答案:

答案 0 :(得分：0)

事实证明，我没有为我的两个应用程序连接字符串都包含新的SQL服务器连接字符串。虽然我的大多数应用程序都使用自定义连接字符串，但DefaultConnection用于登录和注册页面。

一旦我为DefaultConnection添加了为我提供的连接字符串，一切正常。

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