问个Nhibernate的入门知识啊，我写的一个简单实例总调不出来
我在那个官网下了最新的版本。
建立一个window应用程序。在“引用”里面添加了Nhibernate.dll
这是类文件：
using System;
using System.Collections.Generic;
using System.Text;
namespace Nhibernate
{
class User
{
private string id;
private string userName;
private string password;
private string emailAddress;
private DateTime lastLogon;
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; }
}
public DateTime LastLogon
{
get { return lastLogon; }
set { lastLogon = value; }
}
}
}
这是映射文件：
<?xml version= "1.0 " encoding= "utf-8 " ?>
<hibernate-mapping xmlns= "urn:nhibernate-mapping-2.0 ">
<class name= "NHibernate.User, NHibernate " table= "users ">
<id name= "Id " column= "LogonId " type= "String " length= "20 ">
<generator class= "assigned " />
</id>
<property name= "UserName " column= "Name " type= "String " length= "40 "/>
<property name= "Password " type= "String " length= "20 "/>
<property name= "EmailAddress " type= "String " length= "40 "/>
<property name= "LastLogon " type= "DateTime "/>
</class>
</hibernate-mapping>
这是配置文件：
<?xml version= "1.0 " encoding= "utf-8 " ?>
<configuration>
<configSections>
<section name= "nhibernate " type= "System.Configuration.NameValueSectionHandler, System, Version=1.0.3300.0,Culture=neutral, PublicKeyToken=b77a5c561934e089 " />
</configSections>
<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=localhost;initial catalog=Nhibernate;User ID=sa;Password=;Min Pool Size=2 " />
</nhibernate>
</configuration>
这是程序运行的代码段：
Configuration cfg = new Configuration();
cfg.AddAssembly( "NHibernate ");
ISessionFactory factory = cfg.BuildSessionFactory();
ISession session = factory.OpenSession();
ITransaction transaction = session.BeginTransaction();
User newUser = new User();
newUser.Id = "joe_cool ";
newUser.UserName = "Joseph Cool ";
newUser.Password = "abc123 ";
newUser.EmailAddress = "joe@cool.com ";
newUser.LastLogon = DateTime.Now;
// Tell NHibernate that this object should be saved
try
{
session.Save(newUser);
}
catch (Exception e1)
{
MessageBox.Show(e1.ToString());
}
// commit all of the changes to the DB and close the ISession
transaction.Commit();
session.Close();
就是Save的时候报错：
未处理 NHibernate.MappingException
Message= "Unknown entity class: Nhibernate.User "
Source= "NHibernate "
StackTrace:
在 NHibernate.Impl.SessionFactoryImpl.GetEntityPersister(Type theClass)
在 NHibernate.Impl.SessionImpl.GetClassPersister(Type theClass)
在 NHibernate.Impl.SessionImpl.GetEntityPersister(Object obj)
在 NHibernate.Impl.SessionImpl.SaveWithGeneratedIdentifier(Object obj, CascadingAction action, Object anything)
在 NHibernate.Impl.SessionImpl.Save(Object obj)
在 Nhibernate.Form1.button1_Click(Object sender, EventArgs e) 位置 E:\WinPro\Nhibernate\Nhibernate\Form1.cs:行号 41
在 System.Windows.Forms.Control.OnClick(EventArgs e)
在 System.Windows.Forms.Button.OnClick(EventArgs e)
在 System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
在 System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
在 System.Windows.Forms.Control.WndProc(Message& m)
在 System.Windows.Forms.ButtonBase.WndProc(Message& m)
在 System.Windows.Forms.Button.WndProc(Message& m)
在 System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
在 System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
在 System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
在 System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
在 System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData)
在 System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
在 System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
在 System.Windows.Forms.Application.Run(Form mainForm)
在 Nhibernate.Program.Main() 位置 E:\WinPro\Nhibernate\Nhibernate\Program.cs:行号 17
在 System.AppDomain.nExecuteAssembly(Assembly assembly, String[] args)
在 System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
在 Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
在 System.Threading.ThreadHelper.ThreadStart_Context(Object state)
在 System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
在 System.Threading.ThreadHelper.ThreadStart()
[解决办法]
映射出错。要保证你的映射文件和class文件在一个目录.另外，假设class文件是user.cs,那么映射文件应该是user.hbm.xml.另外，property最好使用virtual的。
参考官方的文档：
http://www.hibernate.org/hib_docs/nhibernate/1.2/reference/en/html/quickstart.html
[解决办法]
Nhibernate.User 与NHibernate.User
似乎并不相同
[解决办法]
<class name= "NHibernate.User
namespace Nhibernate
{
class User
{
[解决办法]
cfg.AddAssembly( "NHibernate ");
最好 不要用NHibernate的命名空间,随便取一个,TestNHibernate也好啊
[解决办法]
老大 "NHibernate.User,这个是类名,NHibernate(命名空间,这个命名空间下有User类吗?).User(类名)
你全类的名是Nhibernate.User而不是NHibernate.User
[解决办法]
C#应该是大小写敏感的,如果是我记错了,那就不好意思了,你自己查找问题吧
------解决方案--------------------
cfg.AddAssembly( "NHibernate ");
这一句是否也改了呢?
[解决办法]
Configuration cfg = new Configuration().Configure();
[解决办法]
你可以不要看我上面说的
还需引用Iesi.CollectionsDLL
nhibernate-mapping.xsd这个文件和映射文件放同一目录
<class name= "映射类所在命名空间.映射类名, 映射类所在的程序集名 " table= "映射的数据库表 ">
最近也在看这个东西，写了一个DEMO，想交流的话，留下你的EMAIL
[解决办法]
已发，请注意查收
