Question

我在Windows Server 2003中使用Visual Studio 2005和NHibernate-2.1.2.GA。

我尝试在我的ASP.net程序中将oracle与NHibernate连接。

要获取我的oracle版本，我运行此SQL：select * from v$version

结果显示oracle版本为oracle9i。

所以，我这样写NHibernate.cfg.xml：

<?xml version="1.0" encoding="utf-8" ?>
<hibernate-configuration  xmlns="urn:nhibernate-configuration-2.2" >
  <session-factory>
        <property name="connection.driver_class">NHibernate.Driver.OracleClientDriver</property>
        <property name="connection.connection_string">
          Data Source=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=localhost)(PORT=1521)))
          (CONNECT_DATA=(SERVICE_NAME=MYORACLE)));
          user id=team;password=team;
        </property>
        <property name="adonet.batch_size">10</property>
        <property name="show_sql">true</property>
        <property name="dialect">NHibernate.Dialect.Oracle9iDialect</property>
        <property name="use_outer_join">true</property>
        <property name="command_timeout">10</property>
        <property name="query.substitutions">true 1, false 0, yes 'Y', no 'N'</property>
        <property name="proxyfactory.factory_class">
          NHibernate.ByteCode.Castle.ProxyFactoryFactory,
          NHibernate.ByteCode.Castle
        </property>
        <mapping assembly="NHibernateSample.Domain"/>
      </session-factory>
    </hibernate-configuration>

现在，当我运行试图连接oracle并执行查询sql的测试单元时：

 private ISession _session;
    private SessionManager _helper;
    private NHibernateSample _sample;
    public void TestFixtureSetup()
     {
            _helper = new SessionManager();
        }
        public void Setup()
        {
            _session = _helper.GetSession();
            _sample = new NHibernateSample(_session);
        }
        [NUnit.Framework.Test]
        public void GetCustomerById1Test()
        {
            TestFixtureSetup();
            Setup();
            NHibernateSample _sample = new NHibernateSample(_session);
            Assert.AreEqual(1, _sample.GetCustomerById(1).Id);
        }

它会报告如下错误：

Test 'NHibernateSample.Data.Test.NHibernateSampleFixture.GetCustomerById1Test' failed: NHibernate.MappingException : Could not compile the mapping document: NHibernateSample.Domain.Mappings.Customer.hbm.xml
  ----> NHibernate.HibernateException : Could not instantiate dialect class NHibernate.Dialect.Oracle9iDialect
  ----> System.TypeLoadException : Could not load type org.NHibernate.Dialect.Oracle9iDialect. Possible cause: no assembly name specified.

我知道这是初学者的问题，但我只是个新手！我很感激你的想法...

Answer 1

再次尝试从org.

中删除dialect

<property name="dialect">NHibernate.Dialect.Oracle9iDialect</property>

从官方文档中查看NHibernate SQL Dialects以获取更多详细信息。

Answer 2

感谢上帝，最后我解决了这个问题。 Thers是结果中的一条消息，我忘记粘贴在上面，就像这样：

未能从程序集“mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089”中加载类型“System.DateTimeOffset”

这是因为我的.Net2.0版本已经过时了。然后我安装.Net2.0 SP1并修复了probelm！谢谢Claudio Redi一样！

无法实例化方言类NHibernate.Dialect.Oracle9iDialect

2 个答案: