<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>*.action</url-pattern>

    </filter-mapping>

在你进入核心过滤器之前，就开启session，在action整个生命周期结束后在，关闭session；