Nhibernate的问题,请哪位大虾帮忙????

        在10。1时我无意间发现一个不错的OpenSource的架构Nhibernate,我研究了一天,并且我现在按照http://nhibernate.sourceforge.net/quickstart.html网站的步骤做了实验,但不知为什么总是编译错误,请大家帮忙。
一、代码如下
1.数据库的建立
use NHibernate
go
CREATE TABLE users (
  LogonID varchar(20) NOT NULL default '0',
  Name varchar(40) default NULL,
  Password varchar(20) default NULL,
  EmailAddress varchar(40) default NULL,
  PRIMARY KEY  (LogonID)
)
go
2.创建实体层
using System;
namespace MyNhibernate.Bean
{
 public class MyUser
 {
  private string id;
  private string userName;
  private string password;
  private string emailAddress;
  
  public MyUser()
  {
  }

  public string Id
  {
   get { return id; }
   set { id = value; }
  }

  public string UserName
  {
   get { return userName; }
   set { userName = value; }
  }

  public string Password
  {
   get { return password; }
   set { password = value; }
  }

  public string EmailAddress
  {
   get { return emailAddress; }
   set { emailAddress = value; }
  }
 
 }
}
3.创建XML文件(映射数据)
<?xml version="1.0" encoding="utf-8" ?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.0">
 <class name="MyNhibernate.Bean.MyUser, MyNhibernate.Bean" table="users">
  <property name="Id" column= "LogonId" type="String" length="20"/>
  <property name="UserName" column= "Name" type="String" length="40"/>
  <property name="Password" type="String" length="20"/>
  <property name="EmailAddress" type="String" length="40"/>
 </class>
</hibernate-mapping>
4.在配置文件中添加代码
在<system.web>上面添加
<configSections>
         <section name="nhibernate" type="System.Configuration.NameValueSectionHandler, System, Version=1.0.3300.0,Culture=neutral, PublicKeyToken=b77a5c561934e089" />
 </configSections>
在</system.web>下面添加
 <nhibernate>
  <add
   key="hibernate.connection.provider"         
   value="NHibernate.Connection.DriverConnectionProvider"
  />
  <add
   key="hibernate.dialect"                     
   value="NHibernate.Dialect.MsSql2000Dialect"
  />
  <add
   key="hibernate.connection.driver_class"         
   value="NHibernate.Driver.SqlClientDriver"
  />
  <add
   key="hibernate.connection.connection_string"
   value="Server=jinqi;initial catalog=nhibernate;User id=sa;password=;"
  />
 </nhibernate>
5.创建实现代码
using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using NHibernate;
using NHibernate.Cfg;
using MyNhibernate.Bean;
using NUnit.Framework;
using NHibernate.Expression;

namespace MyNhibernate.NHibernateWeb
{
 /// <summary>
 /// WebForm1 的摘要说明。
 /// </summary>
 public class WebForm1 : System.Web.UI.Page
 {
  private void Page_Load(object sender, System.EventArgs e)
  {
   Configuration cfg = new Configuration();
   cfg.AddAssembly("MyNhibernate");

   ISessionFactory factory = cfg.BuildSessionFactory();
   ISession session = factory.OpenSession();
   ITransaction transaction = session.BeginTransaction();
   MyUser newUser =new MyUser();
   newUser.Id = "joe_cool";
   newUser.UserName = "Joseph Cool";
   newUser.Password = "abc123";
   newUser.EmailAddress = "joe@cool.com";
   
   
   // Tell NHibernate that this object should be saved
   session.Save(newUser);  //错误地方老是错误

   // commit all of the changes to the DB and close the ISession
   transaction.Commit();
   session.Close();

   // open another session to retrieve the just inserted user
   session = factory.OpenSession();

   MyUser joeCool = (MyUser)session.Load(typeof(MyUser), "joe_cool");

   // set Joe Cool's Last Login property
   joeCool.LastLogon = DateTime.Now;

   // flush the changes from the Session to the Database
   session.Flush();

   IList recentUsers = session.CreateCriteria(typeof(MyUser))
    .Add(Expression.Gt("LastLogon", new DateTime(2004, 03, 14, 20, 0, 0)))
    .List();

   foreach(MyUser user in recentUsers)
   {
    Assert.IsTrue(user.LastLogon > (new DateTime(2004, 03, 14, 20, 0, 0)) );
   }

   session.Close();
  }

  #region Web 窗体设计器生成的代码
  override protected void OnInit(EventArgs e)
  {
   //
   // CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
   //
   InitializeComponent();
   base.OnInit(e);
  }
  
  /// <summary>
  /// 设计器支持所需的方法 - 不要使用代码编辑器修改
  /// 此方法的内容。
  /// </summary>
  private void InitializeComponent()
  {   
   this.Load += new System.EventHandler(this.Page_Load);

  }
  #endregion
 }
}

二、编译错误如下
“/MyNhibernate”应用程序中的服务器错误。
--------------------------------------------------------------------------------

No persisters for: MyNhibernate.Bean.MyUser
说明: 执行当前 Web 请求期间,出现未处理的异常。请检查堆栈跟踪信息,以了解有关该错误以及代码中导致错误的出处的详细信息。

异常详细信息: NHibernate.MappingException: No persisters for: MyNhibernate.Bean.MyUser

源错误:


行 38:    
行 39:    // Tell NHibernate that this object should be saved
行 40:    session.Save(newUser);
行 41:
行 42:    // commit all of the changes to the DB and close the ISession
 

源文件: d:\inetpub\wwwroot\mynhibernate\nhibernateweb\webform1.aspx.cs    行: 40

堆栈跟踪:


[MappingException: No persisters for: MyNhibernate.Bean.MyUser]
   NHibernate.Impl.SessionFactoryImpl.GetPersister(Type theClass)
   NHibernate.Impl.SessionImpl.GetPersister(Type theClass)
   NHibernate.Impl.SessionImpl.GetPersister(Object obj)
   NHibernate.Impl.SessionImpl.Save(Object obj)

[ADOException: Could not save object]
   NHibernate.Impl.SessionImpl.Save(Object obj)
   MyNhibernate.NHibernateWeb.WebForm1.Page_Load(Object sender, EventArgs e) in d:\inetpub\wwwroot\mynhibernate\nhibernateweb\webform1.aspx.cs:40
   System.Web.UI.Control.OnLoad(EventArgs e)
   System.Web.UI.Control.LoadRecursive()
   System.Web.UI.Page.ProcessRequestMain()

 


--------------------------------------------------------------------------------
版本信息: Microsoft .NET Framework 版本:1.1.4322.573; ASP.NET 版本:1.1.4322.573


posted on 2004-10-08 09:43  surprise  阅读(595)  评论(0编辑  收藏  举报

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