解决 Turn your Session into FlushMode.COMMIT/AUTO or remove 'readOnly' marker from

org.springframework.dao.InvalidDataAccessApiUsageException: Writeoperations are not allowed in read-only mode(FlushMode.NEVER/MANUAL): Turn your Session intoFlushMode.COMMIT/AUTO or remove 'readOnly' marker from transactiondefinition. 

问题：只读模式下(FlushMode.NEVER/MANUAL)写操作不被允许：把你的Session改成FlushMode.COMMIT/AUTO或者清除事务定义中的readOnly标记。

解决方法: 

web.xml配置里添加 
   <!-- OpenSessionInView过滤器-->
   <filter>
      <filter-name>OpenSessionInViewFilter</filter-name>
      <filter-class>
         org.springframework.orm.hibernate3.support.OpenSessionInViewFilter</filter-class>
      <init-param>
         <param-name>sessionFactoryBeanName</param-name>
         <param-value>sessionFactory</param-value>
      </init-param>
      <init-param>
         <param-name>singleSession</param-name>
         <param-value>true</param-value>
      </init-param>
      <init-param>
         <param-name>flushMode</param-name>
         <param-value>AUTO</param-value>
      </init-param>
   </filter>
   <filter-mapping>
      <filter-name>OpenSessionInViewFilter</filter-name>
      <url-pattern>*.do</url-pattern>
   </filter-mapping>