c# - 使用 MYSQL : System. DllNotFoundException : MySql. Data.MySqlClient.MySqlProviderServices, MySql.Data.Entity 在 .NET MVC 4 应用程序中出现错误

Question

我试图在服务器上启动 .Net MVC4 框架应用程序，但出现以下错误。 我有外部 MYSQL 服务器，它可以很好地与我本地计算机上的相同应用程序配合使用。但是当我在服务器上启动它时，我得到这个错误:

Server Error in '/' Application.

MySql.Data.MySqlClient.MySqlProviderServices, MySql.Data.Entity, Version=6.9.8.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d**

描述:

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.

异常详情:

System.DllNotFoundException: MySql.Data.MySqlClient.MySqlProviderServices, MySql.Data.Entity, Version=6.9.8.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d

来源错误:

Line 1230:              modelQuery = modelQuery.Where(i => i.amsu_status_admin == "active");
Line 1231:
Line 1232:          if (!modelQuery.Any()) return new MapFilterModel();
Line 1233:
Line 1234:          var model = modelQuery.OrderBy(i => i.amsu_status_admin)

堆栈跟踪:

[DllNotFoundException: MySql.Data.MySqlClient.MySqlProviderServices, MySql.Data.Entity, Version=6.9.8.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d]
   MySql.Data.MySqlClient.MySqlClientFactory.get_MySqlDbProviderServicesInstance() +343
   MySql.Data.MySqlClient.MySqlClientFactory.System.IServiceProvider.GetService(Type serviceType) +112
   System.Data.Common.DbProviderServices.GetProviderServices(DbProviderFactory factory) +135
   System.Data.Metadata.Edm.Loader.InitializeProviderManifest(Action`3 addError) +119
   System.Data.Metadata.Edm.Loader.OnProviderManifestTokenNotification(String token, Action`3 addError) +36
   System.Data.EntityModel.SchemaObjectModel.Schema.HandleProviderManifestTokenAttribute(XmlReader reader) +97
   System.Data.EntityModel.SchemaObjectModel.Schema.HandleAttribute(XmlReader reader) +363
   System.Data.EntityModel.SchemaObjectModel.SchemaElement.ParseAttribute(XmlReader reader) +100
   System.Data.EntityModel.SchemaObjectModel.SchemaElement.Parse(XmlReader reader) +75
   System.Data.EntityModel.SchemaObjectModel.Schema.HandleTopLevelSchemaElement(XmlReader reader) +36
   System.Data.EntityModel.SchemaObjectModel.Schema.InternalParse(XmlReader sourceReader, String sourceLocation) +751
   System.Data.EntityModel.SchemaObjectModel.Schema.Parse(XmlReader sourceReader, String sourceLocation) +56
   System.Data.EntityModel.SchemaObjectModel.SchemaManager.ParseAndValidate(IEnumerable`1 xmlReaders, IEnumerable`1 sourceFilePaths, SchemaDataModelOption dataModel, AttributeValueNotification providerNotification, AttributeValueNotification providerManifestTokenNotification, ProviderManifestNeeded providerManifestNeeded, IList`1& schemaCollection) +389
   System.Data.Metadata.Edm.Loader.LoadItems(IEnumerable`1 xmlReaders, IEnumerable`1 sourceFilePaths) +158
   System.Data.Metadata.Edm.StoreItemCollection.Init(IEnumerable`1 xmlReaders, IEnumerable`1 filePaths, Boolean throwOnError, DbProviderManifest& providerManifest, DbProviderFactory& providerFactory, String& providerManifestToken, Memoizer`2& cachedCTypeFunction) +177
   System.Data.Metadata.Edm.StoreItemCollection..ctor(IEnumerable`1 xmlReaders, IEnumerable`1 filePaths) +238
   System.Data.Metadata.Edm.StoreMetadataEntry.LoadStoreCollection(EdmItemCollection edmItemCollection, MetadataArtifactLoader loader) +90
   System.Data.Metadata.Edm.StoreItemCollectionLoader.LoadItemCollection(StoreMetadataEntry entry) +20
   System.Data.Metadata.Edm.MetadataCache.LoadItemCollection(IItemCollectionLoader`1 itemCollectionLoader, T entry) +127
   System.Data.Metadata.Edm.MetadataCache.GetOrCreateStoreAndMappingItemCollections(String cacheKey, MetadataArtifactLoader loader, EdmItemCollection edmItemCollection, Object& entryToken) +191
   System.Data.EntityClient.EntityConnection.LoadStoreItemCollections(MetadataWorkspace workspace, DbConnection storeConnection, DbProviderFactory factory, DbConnectionOptions connectionOptions, EdmItemCollection edmItemCollection, MetadataArtifactLoader artifactLoader) +258
   System.Data.EntityClient.EntityConnection.GetMetadataWorkspace(Boolean initializeAllCollections) +574
   System.Data.EntityClient.EntityConnection.InitializeMetadata(DbConnection newConnection, DbConnection originalConnection, Boolean closeOriginalConnectionOnFailure) +75
   System.Data.EntityClient.EntityConnection.Open() +150
   System.Data.Objects.ObjectContext.EnsureConnection() +75
   System.Data.Objects.ObjectQuery`1.GetResults(Nullable`1 forMergeOption) +40
   System.Data.Objects.ObjectQuery`1.System.Collections.Generic.IEnumerable<T>.GetEnumerator() +31
   System.Linq.Enumerable.Single(IEnumerable`1 source) +101
   System.Data.Objects.ELinq.<>c__11`1.<GetElementFunction>b__11_3(IEnumerable`1 sequence) +7
   System.Data.Objects.ELinq.ObjectQueryProvider.ExecuteSingle(IEnumerable`1 query, Expression queryRoot) +25
   System.Data.Objects.ELinq.ObjectQueryProvider.System.Linq.IQueryProvider.Execute(Expression expression) +70
   System.Linq.Queryable.Any(IQueryable`1 source) +196
   Realbc.Controllers.HomeController.GetMapFilterModelByObjectIds(IQueryable`1 objectsIds, Int32 skipForMax) in c:\inetpub\sites\Realbc\source\Realbc\Realbc\Controllers\HomeController.cs:1232
   Realbc.Controllers.HomeController.Index() in c:\inetpub\sites\Realbc\source\Realbc\Realbc\Controllers\HomeController.cs:43
   lambda_method(Closure , ControllerBase , Object[] ) +102
   System.Web.Mvc.ActionMethodDispatcher.Execute(ControllerBase controller, Object[] parameters) +59
   System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters) +435
   System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +60
   System.Web.Mvc.Async.ActionInvocation.InvokeSynchronousActionMethod() +76
   System.Web.Mvc.Async.AsyncControllerActionInvoker.<BeginInvokeSynchronousActionMethod>b__39(IAsyncResult asyncResult, ActionInvocation innerInvokeState) +36
   System.Web.Mvc.Async.WrappedAsyncResult`2.CallEndDelegate(IAsyncResult asyncResult) +73
   System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +136
   System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +102
   System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethod(IAsyncResult asyncResult) +49
   System.Web.Mvc.Async.AsyncInvocationWithFilters.<InvokeActionMethodFilterAsynchronouslyRecursive>b__3d() +117
   System.Web.Mvc.Async.<>c__DisplayClass46.<InvokeActionMethodFilterAsynchronouslyRecursive>b__3f() +323
   System.Web.Mvc.Async.<>c__DisplayClass33.<BeginInvokeActionMethodWithFilters>b__32(IAsyncResult asyncResult) +44
   System.Web.Mvc.Async.WrappedAsyncResult`1.CallEndDelegate(IAsyncResult asyncResult) +47
   System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +136
   System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +102
   System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethodWithFilters(IAsyncResult asyncResult) +50
   System.Web.Mvc.Async.<>c__DisplayClass2b.<BeginInvokeAction>b__1c() +72
   System.Web.Mvc.Async.<>c__DisplayClass21.<BeginInvokeAction>b__1e(IAsyncResult asyncResult) +185
   System.Web.Mvc.Async.WrappedAsyncResult`1.CallEndDelegate(IAsyncResult asyncResult) +42
   System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +133
   System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +56
   System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult) +40
   System.Web.Mvc.Controller.<BeginExecuteCore>b__1d(IAsyncResult asyncResult, ExecuteCoreState innerState) +34
   System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +70
   System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +133
   System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +56
   System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +37
   System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult) +44
   System.Web.Mvc.Controller.<BeginExecute>b__15(IAsyncResult asyncResult, Controller controller) +39
   System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +62
   System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +133
   System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +56
   System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +37
   System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult) +39
   System.Web.Mvc.Controller.System.Web.Mvc.Async.IAsyncController.EndExecute(IAsyncResult asyncResult) +39
   System.Web.Mvc.MvcHandler.<BeginProcessRequest>b__5(IAsyncResult asyncResult, ProcessRequestState innerState) +39
   System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +70
   System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +133
   System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +56
   System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +37
   System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +40 System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +38
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +9744261
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +155

Answer 1

我找到了答案。问题出在不同版本的 mysql 连接器和 mysql 连接器的 nugetPackage 中。 (我已经安装了 mysql 连接器 6.9.9，但 nugetPackage 是用于 mysql 连接器 6.9.8 的)

因此您需要为连接器安装完全相同版本的 mysql-connector 和 nugetPackage 以使其正常工作。