学步园

1.下载Nhibernate框架NHibernate-1.2.0.CR1, 下载地址:
http://downloads.sourceforge.net/nhibernate/NHibernate-1.2.0.CR1.msi?modtime=1172161735&big_mirror=0
 在安装目录C:/Program Files/NHibernate/bin/net-2.0
 里面有四个dll:
 Nhibernate.dll,
 log4net.dll,
 Iesi.Collections,
 Castle.DynamicProxy.dll
 在项目中需要引用.

2.在sql2000下新建一个数据库db#nhibernate
  在查询分析器里执行下面的sql语句,创建表userInfo
 CREATE TABLE userInfo(
   uId nvarchar not null,--这里搞成int,自增,一直出问题,暂时这样.
   uName nvarchar(40),
   uPwd nvarchar(20)
 )
3.新建一个类库项目GV.Model
  删除自动生成的Class1.cs 
  增加一个类User.cs using System;</p> <p> namespace GV.Model<br /> {<br /> public class User<br /> {<br /> private string _uId;<br /> private string _uName;<br /> private string _uPwd;<br /> //这里需要加上virtual<br /> public virtual string UId<br /> {<br /> get { return _uId; }<br /> set { _uId = value; }<br /> }</p> <p> public virtual string UName<br /> {<br /> get { return _uName; }<br /> set { _uName = value; }<br /> }<br /> public virtual string UPwd<br /> {<br /> get { return _uPwd; }<br /> set { _uPwd = value; }<br /> }<br /> }<br /> } 增加User.hbm.xml,注意设置生成操作为嵌入的资源 <?xml version="1.0" encoding="utf-8" ?><br /> <hibernate-mapping xmlns="urn:nhibernate-mapping-2.2"><br /> <class name="GV.Model.User, GV.Model" table="userInfo"><br /> <id name="UId" column="uId" type="String" length="40"><br /> <generator class="assigned" /><br /> </id><br /> <property name="UName" column="uName" type="String" length="40"/><br /> <property name="UPwd" column="uPwd" type="String" length="40"/><br /> </class><br /> </hibernate-mapping> 4.新建一个网站项目www
  添加第一步提到的四个dll的引用
  添加GV.Model项目引用
  修改web.config<configuration><!--作为此节点的第一个元素--><br /> <configSections><br /> <!--这里的版本或许根据使用的版本修改--><br /> <section name="nhibernate" type="System.Configuration.NameValueSectionHandler, System, Version=1.2.0.3001,Culture=neutral, PublicKeyToken=b77a5c561934e089"/><br /> </configSections><br /> <nhibernate><br /> <add key="hibernate.connection.provider" value="NHibernate.Connection.DriverConnectionProvider"/><br /> <add key="hibernate.dialect" value="NHibernate.Dialect.MsSql2000Dialect"/><br /> <add key="hibernate.connection.driver_class" value="NHibernate.Driver.SqlClientDriver"/><br /> <!--修改这里的数据库连接--><br /> <add key="hibernate.connection.connection_string" value="Server=GV2008/GV;initial catalog=db#nhibernate;Integrated Security=SSPI"/><br /> </nhibernate> 在Default.aspx.cs中增加方法 private void Exec()//增删改<br /> {<br /> NHibernate.Cfg.Configuration cfg = new NHibernate.Cfg.Configuration();<br /> cfg.AddAssembly("GV.Model");<br /> ISessionFactory factory = cfg.BuildSessionFactory();<br /> ISession session = factory.OpenSession();<br /> ITransaction transaction = session.BeginTransaction();<br /> GV.Model.User newUser = new GV.Model.User();<br /> newUser.UId = "11";<br /> newUser.UName = "gv";<br /> newUser.UPwd = "88866";<br /> //session.Save(newUser);//增删改的操作,都以User对象做参数<br /> session.Update(newUser);<br /> //session.Delete(newUser);<br /> transaction.Commit();<br /> session.Close();<br /> }<br /> private void Query()//查<br /> {<br /> NHibernate.Cfg.Configuration cfg = new NHibernate.Cfg.Configuration();<br /> cfg.AddAssembly("GV.Model");<br /> ISessionFactory factory = cfg.BuildSessionFactory();<br /> ISession session = factory.OpenSession();<br /> //注意这里是按实体类名,而不是表名查询,详情参考HQL语法<br /> GridView1.DataSource = session.CreateQuery("from User as u").List();.<br /> GridView1.DataBind();<br /> session.Close();<br /> }    
5.常犯错误:
  错误一:Could not compile the mapping document
  User.hbm.xml与User.cs字段不对应,类型不一致.