Question

我只是尝试使用 FluentNhibernate / C＃访问数据，当我尝试执行sql查询时，我收到以下错误消息。我将不胜感激任何帮助

异常：NHibernate.Exceptions.GenericADOException：无法执行   执行find [SQL：SQL不可用] ---＆gt; System.ArgumentException：   值＆＃34; SampleProject.User＆＃34;不属于＆＃34; SampleProject.User＆＃34;和   不能在此通用集合中使用。参数名称：值at   System.ThrowHelper.ThrowWrongValueTypeArgumentException（Object value，   输入targetType）   System.Collections.Generic.List`1.System.Collections.IList.Add（对象   item）at NHibernate.Util.ArrayHelper.AddAll（IList to，IList from）
  在NHibernate.Impl.SessionImpl.List（CriteriaImpl标准，IList   结果）---内部异常堆栈跟踪结束--- at   NHibernate.Impl.SessionImpl.List（CriteriaImpl条件，IList结果）   在NHibernate.Impl.CriteriaImpl.List（IList结果）at   NHibernate.Impl.CriteriaImpl.ListT

我的脚本看起来如下。像FluentMappings

的错误

namespace SampleProject
{
public class NHibernateHelper
{
    public NHibernateHelper()
    {
        InitializeSessionFactory();
    }
    private static ISessionFactory m_SessionFactory;
    public static ISessionFactory SessionFactory
    {
        get
        {
            if (m_SessionFactory == null)
                InitializeSessionFactory();
            return m_SessionFactory;
        }
    }
    private static void InitializeSessionFactory()
    {
        try
        {
            string connectionString = "";
            connectionString = "Server=localhost;Port=3306;Database=myDB;Uid=testUser;Pwd=123; Allow Zero Datetime=true;Convert Zero Datetime=true; CharSet=utf8";
            m_SessionFactory = Fluently.Configure().Database(
            MySQLConfiguration.Standard
            .ConnectionString(connectionString))
            .Mappings(m => m.FluentMappings.AddFromAssemblyOf<GetData>())
            .ExposeConfiguration(cfg => cfg.SetProperty("connection.release_mode", "on_close"))
            .BuildSessionFactory();
        }
        catch (FluentConfigurationException e)
        {
            throw e.InnerException;
        }
    }

    public static ISession OpenSession()
    {
        return SessionFactory.OpenSession();
    }

}

}

//////////////

public class User
{
    public virtual int UserID { get; set; }
    public virtual string Name { get; set; }
}

public class UserMap : ClassMap<User>
{
    public UserMap()
    {
        Id(x => x.UserID ).Column("user_id");
        Map(x => x.Name).Column("name");
        Table("User_master");
     }
}

//执行sql查询

using (var session = NHibernateHelper.OpenSession())
{
      using (var transaction = session.BeginTransaction())
      {
          var userM = session.CreateCriteria<User>("usr").List<User>();


      }
}

FluentNHibernate - 无法执行查找[SQL：SQL不可用]

0 个答案: