Spring控制的Hibernate的生命周期只针对数据层和服务层,表现层就没这个福分了还有就是只有在session没有关闭的情况下运行Obj.getXxx()时才会执行select语句从数据库加载对象（这就是所谓的延迟加载）session已经关闭，此时再运行Obj.getXxx()方法，Hibernate就会抛出"Could not initialize proxy - the owning Session was closeed"的异常。不过可以通过 org.springframework.orm.hibernate3.support.OpenSessionInViewFilter过滤器来弥补这一缺陷。在WEB.XML中加入以下内容：
<filter>
  <filter-name>hibernateFilter</filter-name>
  <filter-class>
   org.springframework.orm.hibernate3.support.OpenSessionInViewFilter
  </filter-class>
  <!-- singleSession默认为true,若设为false则等于没用OpenSessionInView -->
  <init-param>
   <param-name>singleSession</param-name>
   <param-value>true</param-value>
  </init-param>
 </filter>
<filter-mapping>
  <filter-name>hibernateFilter</filter-name>
  <url-pattern>*.do</url-pattern>
 </filter-mapping>

==============如果还是不行则在DAO里加入Hibernate.initialize(Obj.getXxx());