私のアプリ全体は、mysql データベースに接続し、Entityframework を使用してデータを挿入するだけです。コードはローカルで正常に動作しますが、Amazon サーバーにアップロードすると、次のエラーが表示されます: http://fb1.131x.com/test_data.aspxで確認できます
説明: 現在の Web 要求の実行中に未処理の例外が発生しました。エラーの詳細とコード内のどこでエラーが発生したかについては、スタック トレースを確認してください。詳細: System.NullReferenceException: オブジェクト参照がオブジェクトのインスタンスに設定されていません。
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:
[NullReferenceException: Object reference not set to an instance of an object.]
MySql.Data.MySqlClient.MySqlClientFactory.get_MySqlDbProviderServicesInstance() +126
MySql.Data.MySqlClient.MySqlClientFactory.System.IServiceProvider.GetService(Type serviceType) +39
System.Data.Common.DbProviderServices.GetProviderServices(DbProviderFactory factory) +89
System.Data.Metadata.Edm.Loader.InitializeProviderManifest(Action`3 addError) +174
System.Data.EntityModel.SchemaObjectModel.Schema.HandleAttribute(XmlReader reader) +301
System.Data.EntityModel.SchemaObjectModel.SchemaElement.ParseAttribute(XmlReader reader) +121
System.Data.EntityModel.SchemaObjectModel.SchemaElement.Parse(XmlReader reader) +106
System.Data.EntityModel.SchemaObjectModel.Schema.HandleTopLevelSchemaElement(XmlReader reader) +49
System.Data.EntityModel.SchemaObjectModel.Schema.InternalParse(XmlReader sourceReader, String sourceLocation) +984
System.Data.EntityModel.SchemaObjectModel.Schema.Parse(XmlReader sourceReader, String sourceLocation) +245
System.Data.EntityModel.SchemaObjectModel.SchemaManager.ParseAndValidate(IEnumerable`1 xmlReaders, IEnumerable`1 sourceFilePaths, SchemaDataModelOption dataModel, AttributeValueNotification providerNotification, AttributeValueNotification providerManifestTokenNotification, ProviderManifestNeeded providerManifestNeeded, IList`1& schemaCollection) +472
System.Data.Metadata.Edm.Loader.LoadItems(IEnumerable`1 xmlReaders, IEnumerable`1 sourceFilePaths) +162
System.Data.Metadata.Edm.StoreItemCollection.Init(IEnumerable`1 xmlReaders, IEnumerable`1 filePaths, Boolean throwOnError, DbProviderManifest& providerManifest, DbProviderFactory& providerFactory, String& providerManifestToken, Memoizer`2& cachedCTypeFunction) +203
System.Data.Metadata.Edm.StoreItemCollection..ctor(IEnumerable`1 xmlReaders, IEnumerable`1 filePaths) +305
System.Data.Metadata.Edm.StoreMetadataEntry.LoadStoreCollection(EdmItemCollection edmItemCollection, MetadataArtifactLoader loader) +129
System.Data.Metadata.Edm.MetadataCache.LoadItemCollection(IItemCollectionLoader`1 itemCollectionLoader, T entry) +165
System.Data.Metadata.Edm.MetadataCache.GetOrCreateStoreAndMappingItemCollections(String cacheKey, MetadataArtifactLoader loader, EdmItemCollection edmItemCollection, Object& entryToken) +245
System.Data.EntityClient.EntityConnection.LoadStoreItemCollections(MetadataWorkspace workspace, DbConnection storeConnection, DbProviderFactory factory, DbConnectionOptions connectionOptions, EdmItemCollection edmItemCollection, MetadataArtifactLoader artifactLoader) +312
System.Data.EntityClient.EntityConnection.GetMetadataWorkspace(Boolean initializeAllCollections) +802
System.Data.EntityClient.EntityConnection.InitializeMetadata(DbConnection newConnection, DbConnection originalConnection, Boolean closeOriginalConnectionOnFailure) +11108961
System.Data.EntityClient.EntityConnection.Open() +198
System.Data.Objects.ObjectContext.EnsureConnection() +97
System.Data.Objects.ObjectContext.SaveChanges(SaveOptions options) +651
System.Data.Entity.Internal.InternalContext.SaveChanges() +218
test_data.Page_Load(Object sender, EventArgs e) +231
System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +25
System.Web.UI.Control.LoadRecursive() +71
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3064
Exception
また、webconfig も貼り付けます。バージョン 6.3.5 および 6.4.4 を使用しようとすると、同じエラーが発生します。
<?xml version="1.0" encoding="utf-8"?>
<!--
For more information on how to configure your ASP.NET application, please visit
http://go.microsoft.com/fwlink/?LinkId=169433
-->
<configuration>
<configSections>
<!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
<section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=4.4.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
</configSections>
<system.web>
<customErrors mode="Off" />
<compilation debug="true" targetFramework="4.0">
<assemblies>
<add assembly="System.Security, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A" />
<add assembly="System.Data.Entity, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
<add assembly="System.Data.Entity.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
</assemblies>
<buildProviders>
<add extension=".edmx" type="System.Data.Entity.Design.AspNet.EntityDesignerBuildProvider" />
</buildProviders>
</compilation>
</system.web>
<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=6.3.5.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d" />
</DbProviderFactories>
</system.data>
<entityFramework>
<defaultConnectionFactory type="System.Data.Entity.Infrastructure.LocalDbConnectionFactory, EntityFramework">
<parameters>
<parameter value="v11.0" />
</parameters>
</defaultConnectionFactory>
</entityFramework>
<connectionStrings>
<add name="fb131xEntities" connectionString="metadata=res://*/App_Code.FBDS.csdl|res://*/App_Code.FBDS.ssdl|res://*/App_Code.FBDS.msl;provider=MySql.Data.MySqlClient;provider connection string="server=fb131x.db.8808454.hostedresource.com;user id=fb131x;password=aA!259214;persist security info=True;database=fb131x"" providerName="System.Data.EntityClient" />
</connectionStrings>
</configuration>