1. 学习目的
学习Nhibernate基础知识。掌握Nhibernate的配置方法,实现对单表的简单操作,如:创建表,查询,添加,删除,修改。
2. 开发环境+前期准备
开发环境: windows 2003,Visual studio .Net 2005,Sql server 2005 developer edition
前期准备: Nhibernate框架,我用的目前最新版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
3. 开发步骤:
1).双击下载下来的NHibernate-1.2.0.CR1.msi,将其安装到某个目录,我的目录为: E:"download project"orm"nhibernate.,打开该目录,即可以看到bin,doc,src三个子目录,分别为Realse好的dll或者exe目录,文档说明目录,和源程序目录.
2).打开visual studio 2005,创建类库项目NhibernateSample1
3).在解决方案管理其中,右键点击引用-添加引用,在选项卡种选择浏览,设定查找范围为:E:"download project"orm"nhibernate"bin,添加对Nhibernate.dll,log4net.dll, Iesi.Collections, HashCodeProvider四个dll的引用.
4).打开SQL Server Management Studio,创建数据库nhibernate。
5).在解决方案管理器中添加hibernate.cfg.xml文件。将下面代码粘贴到此文件:
<?
xml version="1.0" encoding="utf-8"
?>
<
hibernate-configuration
xmlns
="urn:nhibernate-configuration-2.2"
>
<
session-factory
name
="NHibernate.Test"
>
<!--
properties
-->
<
property
name
="connection.provider"
>
NHibernate.Connection.DriverConnectionProvider
</
property
>
<
property
name
="connection.driver_class"
>
NHibernate.Driver.SqlClientDriver
</
property
>
<
property
name
="connection.connection_string"
>
Server=127.0.0.1;initial catalog=nhibernate;uid=sa;pwd=123;
</
property
>
<
property
name
="show_sql"
>
false
</
property
>
<
property
name
="dialect"
>
NHibernate.Dialect.MsSql2005Dialect
</
property
>
<
property
name
="use_outer_join"
>
true
</
property
>
<!--
mapping files
-->
<
mapping
assembly
="NhibernateSample1"
/>
</
session-factory
>
</
hibernate-configuration
>
该文件是Nhibernate的配置文件,其中connection.connection_string为数据库连接字符串,Dialect项因为我用的是SQL2005,所以为:MsSql2005Dialect注意:<mapping assembly=”NhibernateSample1”/>表示映射NhibernateSample1程序集下的所有类,所以以后不要需要Configuration.AddClass(..)了;
6).添加类文件:User.cs,添加代码:
using
System;
using
System.Collections.Generic;
using
System.Text;
namespace
NhibernateSample1
{
public class User
{
private int _id;
private string _name;
private string _pwd;
/// <summary>
/// 编号
/// </summary>
public virtual int Id
{
get
{
return _id;
}
set
{
_id = value;
}
}
/// <summary>
/// 名称
/// </summary>
public virtual string Name
{
get
{
return _name;
}
set
{
_name = value;
}
}
/// <summary>
/// 密码
/// </summary>
public virtual string Pwd
{
get
{
return _pwd;
}
set
{
_pwd = value;
}
}
}
}
6).编写User类的映射配置文件:User.hbm.xml
<?
xml version="1.0" encoding="utf-8"
?>
<
hibernate-mapping
xmlns
="urn:nhibernate-mapping-2.2"
>
<
class
name
="NhibernateSample1.User,NhibernateSample1"
table
="Users"
lazy
="false"
>
<
id
name
="Id"
column
="Id"
unsaved-value
="0"
>
<
generator
class
="native"
/>
</
id
>
<
property
name
="Name"
column
="Name"
type
="string"
length
="64"
not-null
="true"
unique
="true"
></
property
>
<
property
name
="Pwd"
column
="Pwd"
type
="string"
length
="64"
not-null
="true"
></
property
>
</
class
>
</
hibernate-mapping
>
注意:该映射文件的属性中的生成操作必须为:嵌入的资源.
7).编写管理ISession对象的辅助类: NHibernateHelper.cs,代码为: