org.hibernate.LazyInitializationException could not initialize proxy-no Session的解决

方法一：在web.xml配置延迟关闭session的过滤器

  <!-- 延迟关闭session OpenSessionInViewFilter 的顺序位于struts2过滤之上 否则延迟关闭session不起作用 --> <filter>           <filter-name>opensession</filter-name>            <filter-class>              org.springframework.orm.hibernate4.support.OpenSessionInViewFilter            </filter-class>             <init-param>                   <param-name>flushMode</param-name>                  <param-value>AUTO</param-value>             </init-param>            <init-param>                   <param-name>singleSession</param-name>                  <param-value>true</param-value>              </init-param>          </filter>        <filter-mapping>           <filter-name>opensession</filter-name>           <url-pattern>/*</url-pattern>       </filter-mapping>   <!-- 启动struts的配置 --> <filter>  <filter-name>struts</filter-name>  <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class> </filter> <filter-mapping>  <filter-name>struts</filter-name>  <url-pattern>/*</url-pattern> </filter-mapping>

方法二：<many-to-one> 的<set> 中设置 lazy=”false”

设置lazy=”false”解决了大部分的延时加载问题，但是同时也降低了系统的性能，应避免使用此方法。