c# - 无法使用spring.net在asp.net mvc3应用程序中打开数据库(sqlite)

Question

我正在编写一个 asp.net mvc3 网络应用程序。我想使用 sqlite 数据库。不幸的是，我得到一个 SqliteException 说“无法打开数据库”。

Spring-Version: 1.3.2

NHibernate-Version: 3.2

数据库提供者/连接字符串:

<db:provider id="employeesDbProvider"
           provider="SQLite-1.0.72"
           connectionString="Data Source=.\Database\Employees.db3;Version=3;">
</db:provider>

堆栈跟踪:

bei System.Data.SQLite.SQLite3.Open(String strFilename, SQLiteOpenFlagsEnum flags, Int32 maxPoolSize, Boolean usePool) in c:\dev\sqlite\dotnet\System.Data.SQLite\SQLite3.cs:Zeile 239.
bei System.Data.SQLite.SQLiteConnection.Open() in c:\dev\sqlite\dotnet\System.Data.SQLite\SQLiteConnection.cs:Zeile 1022.
bei NHibernate.Connection.DriverConnectionProvider.GetConnection()

我什至尝试将 DataSource 设置为绝对路径 (C:\temp\database\Employees.db3)，但抛出了相同的 SqLiteException。

更新:

错误页面上显示的堆栈跟踪:

[SQLiteException (0x80004005): Unable to open the database file]
   System.Data.SQLite.SQLite3.Open(String strFilename, SQLiteOpenFlagsEnum flags, Int32 maxPoolSize, Boolean usePool) in c:\dev\sqlite\dotnet\System.Data.SQLite\SQLite3.cs:239
   System.Data.SQLite.SQLiteConnection.Open() in c:\dev\sqlite\dotnet\System.Data.SQLite\SQLiteConnection.cs:1022
   NHibernate.Connection.DriverConnectionProvider.GetConnection() +155
   NHibernate.Tool.hbm2ddl.SuppliedConnectionProviderConnectionHelper.Prepare() +41
   NHibernate.Tool.hbm2ddl.SchemaMetadataUpdater.GetReservedWords(Dialect dialect, IConnectionHelper connectionHelper) +105
   NHibernate.Tool.hbm2ddl.SchemaMetadataUpdater.Update(ISessionFactory sessionFactory) +151
   NHibernate.Impl.SessionFactoryImpl..ctor(Configuration cfg, IMapping mapping, Settings settings, EventListeners listeners) +1012
   NHibernate.Cfg.Configuration.BuildSessionFactory() +162
   Spring.Data.NHibernate.LocalSessionFactoryObject.NewSessionFactory(Configuration config) in c:\_prj\spring-net\trunk\src\Spring\Spring.Data.NHibernate20\Data\NHibernate\LocalSessionFactoryObject.cs:952
   Spring.Data.NHibernate.LocalSessionFactoryObject.AfterPropertiesSet() in c:\_prj\spring-net\trunk\src\Spring\Spring.Data.NHibernate20\Data\NHibernate\LocalSessionFactoryObject.cs:706
   Spring.Objects.Factory.Support.AbstractAutowireCapableObjectFactory.InvokeInitMethods(Object target, String name, IConfigurableObjectDefinition definition) in c:\_prj\spring-net\trunk\src\Spring\Spring.Core\Objects\Factory\Support\AbstractAutowireCapableObjectFactory.cs:1294
   Spring.Objects.Factory.Support.AbstractAutowireCapableObjectFactory.ConfigureObject(String name, RootObjectDefinition definition, IObjectWrapper wrapper) in c:\_prj\spring-net\trunk\src\Spring\Spring.Core\Objects\Factory\Support\AbstractAutowireCapableObjectFactory.cs:1890
   Spring.Objects.Factory.Support.WebObjectFactory.ConfigureObject(String name, RootObjectDefinition definition, IObjectWrapper wrapper) in c:\_prj\spring-net\trunk\src\Spring\Spring.Web\Objects\Factory\Support\WebObjectFactory.cs:450
   Spring.Objects.Factory.Support.AbstractAutowireCapableObjectFactory.InstantiateObject(String name, RootObjectDefinition definition, Object[] arguments, Boolean allowEagerCaching, Boolean suppressConfigure) in c:\_prj\spring-net\trunk\src\Spring\Spring.Core\Objects\Factory\Support\AbstractAutowireCapableObjectFactory.cs:921

[ObjectCreationException: Error creating object with name 'employeesSessionFactory' defined in 'file [C:\Develop\ASP.Net-Schulung\Mitarbeiterverwaltung.Web\bin\Config\Spring.Database.config.xml] line 16' : Initialization of object failed : Unable to open the database file]
   Spring.Objects.Factory.Support.AbstractAutowireCapableObjectFactory.InstantiateObject(String name, RootObjectDefinition definition, Object[] arguments, Boolean allowEagerCaching, Boolean suppressConfigure) in c:\_prj\spring-net\trunk\src\Spring\Spring.Core\Objects\Factory\Support\AbstractAutowireCapableObjectFactory.cs:938
   Spring.Objects.Factory.Support.AbstractObjectFactory.CreateAndCacheSingletonInstance(String objectName, RootObjectDefinition objectDefinition, Object[] arguments) in c:\_prj\spring-net\trunk\src\Spring\Spring.Core\Objects\Factory\Support\AbstractObjectFactory.cs:2144
   Spring.Objects.Factory.Support.WebObjectFactory.CreateAndCacheSingletonInstance(String objectName, RootObjectDefinition objectDefinition, Object[] arguments) in c:\_prj\spring-net\trunk\src\Spring\Spring.Web\Objects\Factory\Support\WebObjectFactory.cs:299
   Spring.Objects.Factory.Support.AbstractObjectFactory.GetObjectInternal(String name, Type requiredType, Object[] arguments, Boolean suppressConfigure) in c:\_prj\spring-net\trunk\src\Spring\Spring.Core\Objects\Factory\Support\AbstractObjectFactory.cs:2065
   Spring.Objects.Factory.Support.AbstractObjectFactory.GetObject(String name) in c:\_prj\spring-net\trunk\src\Spring\Spring.Core\Objects\Factory\Support\AbstractObjectFactory.cs:1826
   Spring.Objects.Factory.Support.DefaultListableObjectFactory.PreInstantiateSingletons() in c:\_prj\spring-net\trunk\src\Spring\Spring.Core\Objects\Factory\Support\DefaultListableObjectFactory.cs:505
   Spring.Context.Support.AbstractApplicationContext.Refresh() in c:\_prj\spring-net\trunk\src\Spring\Spring.Core\Context\Support\AbstractApplicationContext.cs:1017
   Spring.Context.Support.MvcApplicationContext..ctor(MvcApplicationContextArgs args) in c:\_prj\spring-net\trunk\src\Spring\Spring.Web.Mvc\Context\Support\MvcApplicationContext.cs:75
   Spring.Context.Support.MvcApplicationContext..ctor(String name, Boolean caseSensitive, String[] configurationLocations) in c:\_prj\spring-net\trunk\src\Spring\Spring.Web.Mvc\Context\Support\MvcApplicationContext.cs:47
   _dynamic_Spring.Context.Support.MvcApplicationContext..ctor(Object[] ) in c:\_prj\spring-net\trunk\src\Spring\Spring.Web.Mvc\Context\Support\MvcApplicationContext.cs:50
   Spring.Reflection.Dynamic.SafeConstructor.Invoke(Object[] arguments) in c:\_prj\spring-net\trunk\src\Spring\Spring.Core\Reflection\Dynamic\DynamicConstructor.cs:116
   Spring.Context.Support.RootContextInstantiator.InvokeContextConstructor(ConstructorInfo ctor) in c:\_prj\spring-net\trunk\src\Spring\Spring.Core\Context\Support\ContextHandler.cs:563
   Spring.Context.Support.ContextInstantiator.InstantiateContext() in c:\_prj\spring-net\trunk\src\Spring\Spring.Core\Context\Support\ContextHandler.cs:508
   Spring.Context.Support.ContextHandler.InstantiateContext(IApplicationContext parentContext, Object configContext, String contextName, Type contextType, Boolean caseSensitive, String[] resources) in c:\_prj\spring-net\trunk\src\Spring\Spring.Core\Context\Support\ContextHandler.cs:351
   Spring.Context.Support.ContextHandler.Create(Object parent, Object configContext, XmlNode section) in c:\_prj\spring-net\trunk\src\Spring\Spring.Core\Context\Support\ContextHandler.cs:289

[ConfigurationErrorsException: Error creating context 'spring.root': Unable to open the database file]
   System.Configuration.BaseConfigurationRecord.EvaluateOne(String[] keys, SectionInput input, Boolean isTrusted, FactoryRecord factoryRecord, SectionRecord sectionRecord, Object parentResult) +199
   System.Configuration.BaseConfigurationRecord.Evaluate(FactoryRecord factoryRecord, SectionRecord sectionRecord, Object parentResult, Boolean getLkg, Boolean getRuntimeObject, Object& result, Object& resultRuntimeObject) +1153
   System.Configuration.BaseConfigurationRecord.GetSectionRecursive(String configKey, Boolean getLkg, Boolean checkPermission, Boolean getRuntimeObject, Boolean requestIsHere, Object& result, Object& resultRuntimeObject) +1468
   System.Configuration.BaseConfigurationRecord.GetSection(String configKey) +41
   System.Web.HttpContext.GetSection(String sectionName) +52
   System.Web.Configuration.HttpConfigurationSystem.GetSection(String sectionName) +57
   System.Web.Configuration.HttpConfigurationSystem.System.Configuration.Internal.IInternalConfigSystem.GetSection(String configKey) +6
   System.Configuration.ConfigurationManager.GetSection(String sectionName) +78
   Spring.Util.ConfigurationUtils.GetSection(String sectionName) in c:\_prj\spring-net\trunk\src\Spring\Spring.Core\Util\ConfigurationUtils.cs:71
   Spring.Context.Support.WebApplicationContext.GetContextInternal(String virtualPath) in c:\_prj\spring-net\trunk\src\Spring\Spring.Web\Context\Support\WebApplicationContext.cs:335
   Spring.Context.Support.WebApplicationContext.GetRootContext() in c:\_prj\spring-net\trunk\src\Spring\Spring.Web\Context\Support\WebApplicationContext.cs:223
   Spring.Context.Support.WebSupportModule.Init(HttpApplication app) in c:\_prj\spring-net\trunk\src\Spring\Spring.Web\Context\Support\WebSupportModule.cs:175
   System.Web.HttpApplication.InitModulesCommon() +172
   System.Web.HttpApplication.InitModules() +43
   System.Web.HttpApplication.InitInternal(HttpContext context, HttpApplicationState state, MethodInfo[] handlers) +828
   System.Web.HttpApplicationFactory.GetNormalApplicationInstance(HttpContext context) +304
   System.Web.HttpApplicationFactory.GetApplicationInstance(HttpContext context) +107
   System.Web.HttpRuntime.ProcessRequestInternal(HttpWorkerRequest wr) +327

Answer 1

我用 SQLite、Spring.Net 做了一个快速测试，它失败并出现同样的错误，但是当我在连接字符串中使用斜杠而不是反斜杠时，它神奇地开始工作。

<db:provider id="employeesDbProvider" 
    provider="SQLite-1.0.72"
    connectionString="Data Source=c:/temp/Database/Sample.db3;Version=3;">
</db:provider>

编辑:如果我使用点前缀，我会进一步测试以找出文件的存储位置，例如./Employees.db3。在 IISExpress 中，它存储在 C:\Program Files (x86)\IIS Express 中，很可能不是您所期望的。

在 IIS7 中，它会因 无法打开数据库文件 错误而失败，ihmo 因为它试图写入 Temporary ASP.NET Files 文件夹。

最安全的选择是使用

<db:provider id="employeesDbProvider" 
    provider="SQLite-1.0.72"
    connectionString="Data Source=|DataDirectory|Sample.db3;Version=3;">
</db:provider>

这是您的 MVC 应用程序的 App_Data 文件夹。

我使用 SQLite 1.0.80.0 进行测试。请记住，SQLite 不会创建目录并且需要 ACL 写权限。