我只是第一次设置NHibernate。我的平台和配置设置如下:
我用一个测试项目创建了一个测试MVC应用程序。然后,为了测试NHibernate连接,我使用以下测试夹具:
using IBCService.Models;
using NHibernate.Cfg;
using NHibernate.Tool.hbm2ddl;
using NUnit.Framework;
namespace IBCService.Tests
{
[TestFixture]
public class GenerateSchema_Fixture
{
[Test]
public void Can_generate_schema()
{
var cfg = new Configuration();
cfg.Configure();
cfg.AddAssembly(typeof(Product).Assembly);
new SchemaExport(cfg).Execute(false, true, false);
}
}
Nhibernate配置文件:
<?xml version="1.0" encoding="utf-8"?>
<!-- This config use Oracle Data Provider (ODP.NET) -->
<hibernate-configuration xmlns="urn:nhibernate-configuration-2.2" >
<session-factory name="NHibernate.Test">
<property name="connection.driver_class">NHibernate.Driver.OracleDataClientDriver</property>
<property name="connection.connection_string">
User ID=TEST;Password=******;Data Source=//RAND
</property>
<property name="connection.provider">NHibernate.Connection.DriverConnectionProvider</property>
<property name="show_sql">false</property>
<property name="dialect">NHibernate.Dialect.Oracle10gDialect</property>
<property name="query.substitutions">true 1, false 0, yes 'Y', no 'N'</property>
<property name="proxyfactory.factory_class">NHibernate.ByteCode.LinFu.ProxyFactoryFactory, NHibernate.ByteCode.LinFu</property>
</session-factory>
</hibernate-configuration>
在测试中,我得到以下异常堆栈跟踪:
NHibernate.HibernateException was unhandled by user code
Message=Could not create the driver from NHibernate.Driver.OracleDataClientDriver.
Source=NHibernate
StackTrace:
at NHibernate.Connection.ConnectionProvider.ConfigureDriver(IDictionary`2 settings) in d:\CSharp\NH\nhibernate\src\NHibernate\Connection\ConnectionProvider.cs:line 113
at NHibernate.Connection.ConnectionProvider.Configure(IDictionary`2 settings) in d:\CSharp\NH\nhibernate\src\NHibernate\Connection\ConnectionProvider.cs:line 64
at NHibernate.Connection.ConnectionProviderFactory.NewConnectionProvider(IDictionary`2 settings) in d:\CSharp\NH\nhibernate\src\NHibernate\Connection\ConnectionProviderFactory.cs:line 50
at NHibernate.Tool.hbm2ddl.SchemaExport.Execute(Action`1 scriptAction, Boolean export, Boolean justDrop) in d:\CSharp\NH\nhibernate\src\NHibernate\Tool\hbm2ddl\SchemaExport.cs:line 333
at NHibernate.Tool.hbm2ddl.SchemaExport.Execute(Boolean script, Boolean export, Boolean justDrop) in d:\CSharp\NH\nhibernate\src\NHibernate\Tool\hbm2ddl\SchemaExport.cs:line 290
at IBCService.Tests.GenerateSchema_Fixture.Can_generate_schema() in D:\APPS\VS2010\IBanking\CustomerService\IBCService.Tests\GenerateSchema_Fixture.cs:line 21
InnerException: System.Reflection.TargetInvocationException
Message=Exception has been thrown by the target of an invocation.
Source=mscorlib
StackTrace:
at System.RuntimeTypeHandle.CreateInstance(RuntimeType type, Boolean publicOnly, Boolean noCheck, Boolean& canBeCached, RuntimeMethodHandleInternal& ctor, Boolean& bNeedSecurityCheck)
at System.RuntimeType.CreateInstanceSlow(Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache)
at System.RuntimeType.CreateInstanceDefaultCtor(Boolean publicOnly, Boolean skipVisibilityChecks, Boolean skipCheckThis, Boolean fillCache)
at System.Activator.CreateInstance(Type type, Boolean nonPublic)
at System.Activator.CreateInstance(Type type)
at NHibernate.Bytecode.ActivatorObjectsFactory.CreateInstance(Type type) in d:\CSharp\NH\nhibernate\src\NHibernate\Bytecode\ActivatorObjectsFactory.cs:line 9
at NHibernate.Connection.ConnectionProvider.ConfigureDriver(IDictionary`2 settings) in d:\CSharp\NH\nhibernate\src\NHibernate\Connection\ConnectionProvider.cs:line 107
InnerException: System.NullReferenceException
Message=Object reference not set to an instance of an object.
Source=NHibernate
StackTrace:
at NHibernate.Driver.OracleDataClientDriver..ctor() in d:\CSharp\NH\nhibernate\src\NHibernate\Driver\OracleDataClientDriver.cs:line 42
InnerException:
如果将NHibernate.Driver.OracleDataClientDriver更改为NHibernate.Driver.OracleClientDriver(Oracle的MS提供程序),则测试成功。有人可以告诉我我在做什么错吗?
最佳答案
你好
我认为会发生错误,因为Nhibernate并未使用Assembly.LoadWithPartialName()从GAC加载驱动程序,而是使用Assembly.Load()从GAC加载了驱动程序。尝试将Oracle.DataAccess.dll放在bin目录中,或使用qualifyAssembly部分放入您的app.config或web.config中。
例子:
<runtime>
<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
<qualifyAssembly partialName="Oracle.DataAccess"
fullName="Oracle.DataAccess, Version=2.102.2.20, Culture=neutral, PublicKeyToken=89b483f429c47342" />
</assemblyBinding>
</runtime>
关于nhibernate - 使用ODP.NET的NHibernate 3.0配置,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/4562002/