spring.net + Nhibernate 这个让我搞的头大的东西

spring.net + Nhibernate 做开发。大多数人会使用到HibernateTemplate。我在看过spring.net 自带的例子，然后通过他的配置和方法，在访问数据调用的时候，HibernateTemplate 为null.说明注入失败吗？
<?xml version="1.0" encoding="utf-8"?>
<configuration> <configSections> <!-- Spring --> <sectionGroup name="spring"> <section name="context" type="Spring.Context.Support.WebContextHandler, Spring.Web"/> <section name="objects" type="Spring.Context.Support.DefaultSectionHandler,        Spring.Core"/> <section name="parsers" type="Spring.Context.Support.NamespaceParsersSectionHandler,        Spring.Core"/> </sectionGroup> </configSections> <!-- Spring --> <spring> <parsers>
<parser type="Spring.Data.Config.DatabaseNamespaceParser, Spring.Data"/>
</parsers> <context> <resource uri="config://spring/objects"/> </context> <objects xmlns="http://www.springframework.net"   xmlns:db="http://www.springframework.net/database">
<db:provider id="DbProvider"
                     provider="SqlServer-2.0"
                     connectionString="Data Source=.\SQLEXPRESS;Database=Test;Integrated Security=true;User Instance=false; uid=sa;pwd=321"/> <object type="Spring.Objects.Factory.Config.PropertyPlaceholderConfigurer,Spring.Core"> <property name="ConfigSections" value="databaseSettings"/> </object> <object id="SessionFactory" type="Spring.Data.NHibernate.LocalSessionFactoryObject,Spring.Data.NHibernate12"> <property name="DbProvider" ref="DbProvider"/> <property name="MappingAssemblies"> <list>
<value>SpringHibernate.Net.Model</value>
<value>SpringHibernate.Net.BaseClass</value> </list> </property> <property name="HibernateProperties">
<dictionary>
<entry key="hibernate.connection.provider"
   value="NHibernate.Connection.DriverConnectionProvider"/>
<entry key="dialect"
   value="NHibernate.Dialect.MsSql2005Dialect"/>
<entry key="hibernate.connection.driver_class"
   value="NHibernate.Driver.SqlClientDriver"/> </dictionary>
</property> </object> <object name="MyMathObj"  type="SpringHibernate.Net.BaseClass.DMath,SpringHibernate.Net.BaseClass" />

<object id="PersonDAO" type="SpringHibernate.Net.BaseClass.PersonDAO, SpringHibernate.Net.BaseClass">
<property name="SessionFactory" ref="SessionFactory"/> </object> <!-- Pages --> <object type="Default.aspx">
<property name="Message" value="Hello from Web.Config"/>
<property name="DMath" ref="MyMathObj"/>
<property name="PersonDAO" ref="PersonDAO"/>

</object> </objects>
</spring></configuration>
配置有错误吗？ public partial class _Default : System.Web.UI.Page
    {
        IPersonDAO personDAO;        public IPersonDAO PersonDAO
        {            get { return personDAO; }            set { personDAO = value; }        }
        protected void Page_Load(object sender, EventArgs e)
        {            //Response.Write(message);
            Response.Write(DMath.add(30, 50));
                         Person p = new Person();            p.Name = "Maruf";            personDAO.Save(p);            Person p1 = personDAO.LoadByID(1);        }
    }刚接触，所以有很多的不懂，望高手指点！