知识大全 Spring配置事务在DAO层和业务逻辑层

Posted 2022-07-18 知

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Spring通过AOP实现声明式事务管理通常通过TransactionProxyFactoryBean设置Spring事务代理我们需要一个目标对象包装在事务代理中这个目标对象一般是一个普通Java对象的bean 当我们定义TransactionProxyFactoryBean时必须提供一个相关的 PlatformTransactionManager的引用和事务属性事务属性含有上面描述的事务定义 PlatformTransactionManager HibernateTransactionManager需要一个SessionFactory的引用 JtaTransactionManager 一．把事务放置在了DAO层 <!—hibernateTransactionManager ><bean id= transactionManager class= springframework orm hibernate HibernateTransactionManager > <property name= sessionFactory > <ref local= sessionFactory /> </property></bean><!—DAO层接口实现 ><bean id= panyDAOTarget class= vstsoft querypany dao impl CompanyDAOImpl > <property name= sessionFactory > <ref local= sessionFactory /> </property></bean><!—spring对DAO层的事务代理 ><bean id= panyDAOProxy class= springframework transaction interceptor TransactionProxyFactoryBean > <property name= transactionManager > <ref bean= transactionManager /> </property> <property name= target > <ref local= panyDAOTarget /> </property> <property name= transactionAttributes > <props> <prop key= insert* >PROPAGATION_REQUIRED</prop> <prop key= delete* >PROPAGATION_REQUIRED</prop> <prop key= find* > PROPAGATION_REQUIRED readOnly </prop> </props> </property></bean><!—业务层接口实现把DAO注入到Service里面 ><bean name= panyManageTarget class= vstsoft querypany service impl CompanyManageTarget > <property name= panyDAO > <ref bean= panyDAOProxy /> </property></bean><!—spring对Service层的代理 ><bean id= panyManageProxy class= springframework aop framework ProxyFactoryBean > <property name= proxyInterfaces > <value> vstsoft querypany service CompanyManage</value> </property> <property name= target > <ref bean= panyManageTarget /> </property></bean><!—配置struts访问把service层注入到action里面 ><bean name= /pany class= vstsoft querypany web action CompanyAction singleton= false > <property name= panyManage > <ref local= panyManageProxy /> </property></bean>二．把事务放置在了Service层 <!—jtaTransactionManager ><bean id= jtaTransactionManager class= springframework transaction jta JtaTransactionManager /><!—DAO层接口实现 ><bean id= panyDAOTarget class= vstsoft querypany dao impl CompanyDAOImpl > <property name= sessionFactory > <ref local= sessionFactory /> </property></bean><!—spring对DAO层的代理 ><bean id= panyDAOProxy class= springframework aop framework ProxyFactoryBean > <property name= proxyInterfaces > <value> vstsoft querypany dao CompanyDAO</value> </property> <property name= target > <ref bean= panyDAOTarget /> </property></bean><!—业务层接口实现把DAO注入到Service里面 ><bean name= panyManageTarget class= vstsoft querypany service impl CompanyManageTarget > <property name= panyDAO > <ref bean= panyDAOProxy /> </property></bean><!—spring代理业务层的事务管理 ><bean id= panyManageProxy class= springframework transaction interceptor TransactionProxyFactoryBean > <property name= transactionManager > <ref local= jtaTransactionManager /> </property> <property name= transactionAttributes > <props> <prop key= set* >PROPAGATION_REQUIRED</prop> <prop key= find* >PROPAGATION_REQUIRED readOnly</prop> </props> </property> <property name= target > <ref bean= panyManageTarget /> </property></bean><!—配置struts访问把service层注入到action里面 ><bean name= /pany class= vstsoft querypany web action CompanyAction singleton= false > <property name= panyManage > <ref local= panyManageProxy /> </property></bean>　　在service层的接口实现CompanyManageImpl里面有个setData方法按顺序执行数据查询数据删除数据插入数据库行为如果哪一步出异常（运行时异常）事务回滚只有所有行为都没成功事务提交 cha138/Article/program/Java/ky/201311/28057