struts 整合Hibernate 报错： no session or session was closed

原因：事务加载service层，jsp中使用ognl 访问数据库就会报错：

解决办法：

<!-- Spring的OpenSessionInView实现 --> 

<filter> 
    <filter-name>openSessionInViewFilter</filter-name> 
    <filter-class> 
        org.springframework.orm.hibernate3.support.OpenSessionInViewFilter 
    </filter-class> 
</filter> 
<filter-mapping> 
    <filter-name>openSessionInViewFilter</filter-name> 
    <url-pattern>/*</url-pattern> 
</filter-mapping>