ヒベルナ:Write operations arnot allowed…)

環境spring＋hibernate 3＋struts
failed to lazinitiaze a collection of role:no session or session was closed
実験していくつかの解決方法を発見しました.
1、ペアの多い2つの列に対応するlazy=trueをlazy＝falseに変更すればいいです.
2、検索にxxx.load(class,id)を使うとxxxになり、get(class,id)3はweb.xmlファイルに参加します. 

<filter>
  <filter-name>hibernateFilter</filter-name>
  <filter-class>

org.springframework.orm.hibernate3.support.OpenSessionInViewFilter  

</filter-class> 

  <init-param>
            <param-name>singleSession</param-name>
            <param-value>false</param-value>
        </init-param> 

<!--  --  <init-param>            ：org.springframework.dao.InvalidDataAccessApiUsageException: Write operations are not allowed in read-only mode (FlushMode.NEVER) - turn your Session into FlushMode.AUTO or remove 'readOnly' marker from transaction definition
>
 </filter>

<filter-mapping>
  <filter-name>hibernateFilter</filter-name>
  <url-pattern>*.mmg</url-pattern>
 </filter-mapping>