Write operations are not allowed in read-only mode (FlushMode.MANUAL):
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在使用spring+hibernate进行数据update和delete时,出现了
org.springframework.dao.InvalidDataAccessApiUsageException: Write operations are not allowed in read-only mode (FlushMode.MANUAL): Turn your Session into FlushMode.COMMIT/AUTO or remove 'readOnly' marker from transaction definition.异常。网上查了些资料,解释了Spring在TransactionDefinition接口中规定了事务传播的行为,规定了事务方法和事务方法发生嵌套如何进行传播。闲话少说,当出现这种错误时,我是这么做的。
beans.xml中配置为:
<!-- 配置数据源 --><bean id="MyDataSource" destroy-method="close" class="org.apache.commons.dbcp.BasicDataSource"> <property name="driverClassName" value="com.mysql.jdbc.Driver"/> <property name="url" value="jdbc:mysql://localhost:3306/spring"/> <property name="username" value="root"/> <property name="password" value="1234"/></bean> <!--定义自己的sessionFactory--> <bean id="mySessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean"> <property name="dataSource" ref="MyDataSource"/> <property name="annotatedClasses"> <list> <value>com.nhx.model.User</value> </list> </property> <property name="hibernateProperties"> <props> <prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop> <prop key="hibernate.show_sql">true</prop> <prop key="hibernate.format_sql">true</prop> </props> </property> </bean> <!--定义自己的hibernateTemplate--> <bean id="hibernateTemplate" class="org.springframework.orm.hibernate4.HibernateTemplate"> <property name="sessionFactory" ref="mySessionFactory"/> </bean> <!--定义hibernate的事务管理器--> <bean id="txManager"class="org.springframework.orm.hibernate4.HibernateTransactionManager"> <!--关联sessionFactory--> <property name="sessionFactory" ref="mySessionFactory" /></bean> <!--定义切面类--> <aop:config><aop:pointcut id="bussinessService" <!--你需要用到事务处理的方法关联--> expression="execution(public * com.nhx.dao.impl.*.*(..))" /><aop:advisor pointcut-ref="bussinessService" advice-ref="txAdvice"/></aop:config> <!--spring建议中规定你的update\delete\select\add方法中事务的处理方式--> <tx:advice id="txAdvice" transaction-manager="txManager"><tx:attributes> <!--定义事务为只读模式--> <tx:method name="exists" read-only="true" /> <!--定义com.nhx.dao.impl包中的任何前缀为update的方法事务方法,sessionFactory不存在时,自动建立--> <!--这也是解决本问题的关键方法--> <tx:method name="update*" propagation="REQUIRED"/><tx:method name="delete*" propagation="REQUIRED" /></tx:attributes></tx:advice></span>
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