配置NHibernate有三种常见的配置方法
最近在折腾NHibernate，所以和大家分享一些东东
配置NHibernate有三种常见的配置方法。
1：在web.config,App.config里面配置
<?
xml version="1.0" encoding="utf-8"
?>
<
configuration
>
<!--
Add this element
-->
<
configSections
>
<
section
name
="hibernate-configuration"
type
="NHibernate.Cfg.ConfigurationSectionHandler, NHibernate"
/>
</
configSections
>
<!--
Add this element
-->
<
hibernate-configuration
xmlns
="urn:nhibernate-configuration-2.2"
>
<
session-factory
>
<
property
name
="dialect"
>
NHibernate.Dialect.MsSql2005Dialect
</
property
>
<
property
name
="connection.provider"
>
NHibernate.Connection.DriverConnectionProvider
</
property
>
<
property
name
="connection.connection_string"
>
Server=TLSZ207\SQLEXPRESS;initial catalog=Test;Integrated Security=true
</
property
>
</
session-factory
>
</
hibernate-configuration
>
<!--
Leave the system.web section unchanged
-->
<
system
.web
>
</
system.web
>
</
configuration
>
NHibernate.Cfg.Configuration cfg = new NHibernate.Cfg.Configuration();
这种配置方法将会到应用程序配置文件（App.Config,Web.Config）中查找NHibernate的配置信息.
2：hibernate.cfg.xml
建立名为hibernate.cfg.xml的文件。实例化Configuration config = new Configuration().Configure();这样NHibernate将会在目录下寻找hibernate.cfg.xml的配置文件。
hibernate.cfg.xml的格式
<?
xml version="1.0" encoding="utf-8"
?>
<
hibernate-configuration
xmlns
="urn:nhibernate-configuration-2.0"
>
<
session-factory
name
="MySessionFactory"
>
<
property
name
="dialect"
>
NHibernate.Dialect.MsSql2005Dialect
</
property
>
<
property
name
="connection.provider"
>
NHibernate.Connection.DriverConnectionProvider
</
property
>
<
property
name
="connection.connection_string"
>
Server=TLSZ207\SQLEXPRESS;initial catalog=Test;Integrated Security=true
</
property
>
</
session-factory
>
</
hibernate-configuration
>
Configuration config = new Configuration().Configure(configFileName);
这种配置方法将查找指定的Hibernate标准配置文件，可以是绝对路径或者相对路径。还可以通过编码的方式来添加配置信息：
IDictionary props = new Hashtable();
props[“dialect”] = "NHibernate.Dialect.MsSql2005Dialect";
...
Configuration cfg = new Configuration();
cfg.Properties = props;//cfg.AddProperties(props);
映射文件：
所有的XML映射都需要使用nhibernate-mapping-2.0 schema。目前的schema可以在NHibernate的资源路径或者是NHibernate.dll的嵌入资源（Embedded Resource）中找到。NHibernate总是会优先使用嵌入在资源中的schema文件。你可以将hibernate-mapping拷贝到 C:\Program Files\Microsoft Visual Studio .NET 2003\Common7\Packages\schemas\xml路径中，以获得智能感知功能。
<?
xml version="1.0" encoding="utf-8"
?>
<
hibernate-mapping
xmlns
="urn:nhibernate-mapping-2.2"
namespace
="Test"
assembly
="Test"
>
<
class
name
="Test.Cat,Test"
table
="Cat"
>
<
id
name
="CatID"
>
<
column
name
="CatID"
sql-type
="char(32)"
not-null
="true"
/>
<
generator
class
="uuid.hex"
/>
</
id
>
<
property
name
="Name"
>
<
column
name
="Name"
length
="16"
not-null
="true"
/>
</
property
>
<
property
name
="Sex"
/>
<
property
name
="Weight"
/>
</
class
>
</
hibernate-mapping
>