`
lh_kevin
  • 浏览: 44114 次
  • 性别: Icon_minigender_1
  • 来自: 上海
社区版块
存档分类
最新评论

Write operations are not allowed in read-only mode

阅读更多

Write operations are not allowed in read-only mode 只读模式下(FlushMode.NEVER/MANUAL)写操作不允

 

org.springframework.dao.InvalidDataAccessApiUsageException: Write operations are not allowed in read-only mode (FlushMode.NEVER/MANUAL): Turn your Session into FlushMode.COMMIT/AUTO or remove 'readOnly' marker from transaction definition.

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。

 

错误原因:
          OpenSessionInViewFilter在getSession的时候,会把获取回来的session的flush mode 设为FlushMode.NEVER。然后把该sessionFactory绑定到TransactionSynchronizationManager,使request的整个过程都使用同一个session,在请求过后再接除该sessionFactory的绑定,最后closeSessionIfNecessary根据该session是否已和transaction绑定来决定是否关闭session。在这个过程中,若HibernateTemplate 发现自当前session有不是readOnly的transaction,就会获取到FlushMode.AUTO Session,使方法拥有写权限。也即是,如果有不是readOnly的transaction就可以由Flush.NEVER转为Flush.AUTO,拥有insert,update,delete操作权限,如果没有transaction,并且没有另外人为地设flush model的话,则doFilter的整个过程都是Flush.NEVER。所以受transaction(声明式的事务)保护的方法有写权限,没受保护的则没有。

解决方法:

web.xml配置里添加
<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>/*</url-pattern>
</filter-mapping>

 

如果在交给spring 管理的情况下,在beans.xml 里的配置

 <bean id="txManager"
  class="org.springframework.orm.hibernate3.HibernateTransactionManager">
  <property name="sessionFactory" ref="sessionFactory" />
 </bean>

 <aop:config>
  <aop:pointcut id="bussinessService"
   expression="execution(* com.fan.service.base.*.*(..))" />
  <aop:advisor pointcut-ref="bussinessService"
   advice-ref="txAdvice" />
 </aop:config>

 <tx:advice id="txAdvice" transaction-manager="txManager">
  <tx:attributes>
   <tx:method name="get*" read-only="false" propagation="NOT_SUPPORTED"/>
   <tx:method name="find*" read-only="false" propagation="NOT_SUPPORTED"/>
   <tx:method name="save*" propagation="REQUIRED"/> // 如果不把save update delete都配置上,
   <tx:method name="update*" propagation="REQUIRED"/> //这些操作会无效
   <tx:method name="delete*" propagation="REQUIRED"/>
  </tx:attributes>
 </tx:advice>

分享到:
评论

相关推荐

    使用Spring引起的错误

    ### 使用Spring引起的错误:Write operations are not allowed in read-only mode (FlushMode.NEVER) #### 问题背景 在使用Spring框架时,特别是在与Hibernate结合的情况下,可能会遇到“Write operations are not...

    SSH1,JQuery的ajax返回json二维数组处理过程

    `web.xml`配置文件中的`OpenSessionInViewFilter`是为了在HTTP请求的生命周期内保持一个Hibernate的Session,这样可以在视图渲染过程中执行数据库操作,防止“Write operations are not allowed in read-only mode”...

    Open_Session_In_View详解.doc

    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 ...

    hibernate错误解决方案

    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 ...

    BURNINTEST--硬件检测工具

    Windows 98 and ME are not supported in BurnInTest version 5.3 and above. Use a version of BurnInTest prior to 5.2 for compatibility with W98 and ME. Windows 95 and Windows NT =======================...

    FlexGraphics_V_1.79_D4-XE10.2_Downloadly.ir

    When True then in ftmPanning mode will be shown only cached image of the initial client area. All parts outside will paints of the TFlexPanel.Brush. When returning from ftmPanning mode the complete ...

    Mask 98 for PRwin98

    Note: You are not allowed to distribute the PRWIN98.INI configuration file if it contains registered user details. However, please feel free to distribute the original, unregistered shareware files, ...

    微软内部资料-SQL性能优化2

    Because device drivers operate at DPC/dispatch level (covered in lesson 2), and page faults are not allowed at this level or above, most device drivers use non-paged pool to assure that they do not ...

    微软内部资料-SQL性能优化3

    Consistency and isolation are the most important in describing SQL Server’s locking model. It is up to the application to define what consistency means, and isolation in some form is needed to ...

    python3.6.5参考手册 chm

    Notable changes in Python 3.6.5 What’s New In Python 3.5 Summary – Release highlights New Features PEP 492 - Coroutines with async and await syntax PEP 465 - A dedicated infix operator for matrix...

Global site tag (gtag.js) - Google Analytics