Fluent nHibernate映射-未映射类出错

我正在尝试通过代码和连接实体进行映射。我正在使用northwind数据库来练习和了解nHibernate。我已经为这个问题工作了几个小时，并决定寻求一些帮助

我正在尝试映射来自Northwind的两个表、订单和客户，并使用QueryOver将它们连接在一起。这是一个简单的控制台应用程序，我的代码如下所示

using System;
using NHibernate.Mapping.ByCode.Conformist;
using NHibernate.Mapping;
using NHibernate.Linq;
using NhiberNiteDemo;


namespace NhiberNiteDemo
{
  public class Customers {
    public Customers() { }
    public virtual string Customerid { get; set; }
    public virtual string Companyname { get; set; }
    public virtual string Contactname { get; set; }
    public virtual string Contacttitle { get; set; }
    public virtual string Address { get; set; }
    public virtual string City { get; set; }
    public virtual string Region { get; set; }
    public virtual string Postalcode { get; set; }
    public virtual string Country { get; set; }
    public virtual string Phone { get; set; }
    public virtual string Fax { get; set; }
    public virtual ISet<Order> Orders { get; set; }
 }


}
 public class CustomersMap : ClassMapping<Customers> {

    public CustomersMap() {
        Schema("dbo");
        Lazy(true);
        Id(x => x.Customerid, map => map.Generator(Generators.Assigned));
        Property(x => x.Companyname, map => map.NotNullable(true));
        Property(x => x.Contactname);
        Property(x => x.Contacttitle);
        Property(x => x.Address);
        Property(x => x.City);
        Property(x => x.Region);
        Property(x => x.Postalcode);
        Property(x => x.Country);
        Property(x => x.Phone);
        Property(x => x.Fax);
    //  Bag(x => x.Customercustomerdemo, colmap =>  { colmap.Key(x =>       x.Column("CustomerID")); colmap.Inverse(true); }, map => { map.OneToMany(); });
        Set(x => x.Orders, colmap =>  { colmap.Key(x => x.Column("CustomerID")); colmap.Inverse(true); }, map => { map.OneToMany();  });
    }
}
public class Order
{
  public Order() { }
  public virtual int Orderid { get; set; }
  public virtual ISet<Customers> customers { get; set; }
  // public virtual Employees Employees { get; set; }
  //public virtual Shippers Shippers { get; set; }
 public virtual DateTime Orderdate { get; set; }
 public virtual DateTime Requireddate { get; set; }
 public virtual DateTime Shippeddate { get; set; }
 public virtual decimal Freight { get; set; }
 public virtual string Shipname { get; set; }
 public virtual string Shipaddress { get; set; }
 public virtual string Shipcity { get; set; }
 public virtual string Shipregion { get; set; }
 public virtual string Shippostalcode { get; set; }
 public virtual string Shipcountry { get; set; }
}




public class OrdersMap : ClassMapping<Order>
{

 public OrdersMap()
 {
     Schema("dbo");
     Lazy(true);
     Id(x => x.Orderid, map => map.Generator(Generators.Identity));
     Property(x => x.Orderdate);
     Property(x => x.Requireddate);
     Property(x => x.Shippeddate);
     Property(x => x.Freight);
     Property(x => x.Shipname);
     Property(x => x.Shipaddress);
     Property(x => x.Shipcity);
     Property(x => x.Shipregion);
     Property(x => x.Shippostalcode);
     Property(x => x.Shipcountry);
     ManyToOne(x => x.customers, map =>
     {
         map.Column("CustomerID");
         map.NotNullable(true);
         map.Cascade(Cascade.None);
     });
/*
     ManyToOne(x => x.Employees, map =>
     {
         map.Column("EmployeeID");
         map.PropertyRef("Employeeid");
         map.NotNullable(true);
         map.Cascade(Cascade.None);
     });
  */
     /*
     ManyToOne(x => x.Shippers, map =>
     {
         map.Column("ShipVia");
         map.NotNullable(true);
         map.Cascade(Cascade.None);
     });
       */
    // Set(x => x.OrderDetails, colmap => { colmap.Key(x =>    x.Column("OrderID")); colmap.Inverse(true); }, map => { map.OneToMany(); });
 }
}


 public class Program
{
    private static Lazy<ISessionFactory> factory = new  Lazy<ISessionFactory>(GetSessionFactory, System.Threading.LazyThreadSafetyMode.ExecutionAndPublication);

    public static void Main(string[] args)
    {
       // using (ISession session = OpenSession())
        {
        //    IList<Customers> Customers = session.Query<Customers>().Where(p => p.Customerid == "ALFKI").ToList();
            //IList<Pet> pets = query.List<Pet>();
        //    // Console.Out.WriteLine("pets.Count = " + pets.Count);
       //     Customers.ToList().ForEach(p => Console.WriteLine(p.Contactname));
       //     Console.Read();
        }
        Testhib();

    }

    public static void Testhib()
    {
        ISession session = OpenSession();
        session.QueryOver<Order>()
            .JoinQueryOver<Customers>(p => p.customers).Where(k => k.Customerid == "ALFKI");


        //Console.WriteLine("Jow Jow");
        // Console.Read();

    }


    private static ISession OpenSession()
    {
        return factory.Value.GetCurrentSession();
    }

    private static ISessionFactory GetSessionFactory()
    {
        //NHibernate.Cfg.Configuration
        var c = new Configuration();
        //c.Configure();
        c.DataBaseIntegration(db =>
        {
            db.ConnectionString = "Server=\"nsure-shj\";database=NORTHWND;Integrated Security=SSPI";
            db.Dialect<NHibernate.Dialect.MsSql2012Dialect>();

        });
        //c.Configure("c:\XML.xml");

        ModelMapper maps = new ModelMapper();
       // maps.AddMapping<CustomersMap>();
        maps.AddMappings(Assembly.GetExecutingAssembly().GetExportedTypes());

        c.AddMapping(maps.CompileMappingForAllExplicitlyAddedEntities());
        c.CurrentSessionContext<NHibernate.Context.ThreadLocalSessionContext>();
        //c.Configure().Configure();
        var sessionFac = c.BuildSessionFactory();
        return sessionFac;

        //return sessionFac.GetCurrentSession();

    }



}

但当我运行此代码时，它会从BuildSessionFactory方法引发异常，并显示以下消息：

An association from the table Order refers to an unmapped class:   System.Collections.Generic.ISet`1[[NhiberNiteDemo.Customers, NhiberNiteDemo, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]]

---

有人能帮助确定此错误的原因吗？

查看您的代码片段-这看起来像是命名空间问题。您只在命名空间

NhiberNiteDemo

中封闭了Customers类，请尝试移动命名空间的关闭按钮

}

，以封装上面的所有代码

---

如果这不能解决问题，您需要确保您的映射正在加载。尝试从您的

订单

实体中删除

客户

属性，然后更改查询，使其成为对

订单

实体的直接选择，并查看它是否可以正常工作。这将确定映射是否已正确加载。

查看代码片段-这看起来像是命名空间问题。您只在命名空间

NhiberNiteDemo

中封闭了Customers类，请尝试移动命名空间的关闭按钮

}

，以封装上面的所有代码

如果这不能解决问题，您需要确保您的映射正在加载。尝试从您的

订单

实体中删除

客户

属性，然后更改查询，使其成为对

订单

实体的直接选择，并查看它是否可以正常工作。这将确定映射是否已正确加载

An association from the table Order refers to an unmapped class:   System.Collections.Generic.ISet`1[[NhiberNiteDemo.Customers, NhiberNiteDemo, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]]