转:spring事务控制配置实例

Spring声明式事务配置的几种方法
在Spring中进行事务控制首先要选择适当的事务管理器,其次为程序选择划分事务的策略。如果只有单个事务性资源,可以从“单一资源”的 PlatformTransactionManger实现当中选择一个,这些实现 有:DataSourceTransactionManager,HibernateTransactionManager, JdoTransactionManager,PersistenceBrokerTransactionManager和 JmsTransactionManager。根据你所采用的数据库持久化技术选择。如果你的项目运行于支持JTA的服务器,那么将选择 JtaTransactionManger,将会支持多资源事务。
下表将为你选择适当的事务管理器提供参考。

技术               事务管理器(————后)           内建的事务支持(括号内)
JDBC————DataSurceTransactionManager
        JtaTransactionManager
        (JdbcTemplate和org.springframework.jdbc.object包中的所有类 )
IBATIS————DataSourceTransactionManager
          JtaTransactionManager
        (SqlMapClientTemplate和SqlClientTemplate)
Hibernate————HibernateTransactionManager
             JtaTransactionManager
             (HibernateTemplate和HibernateInterceptor)
JDO————JdoTransactionManager
       JtaTransactionManager
       (JdoTemplate和JdoInterceptor)
ApacheOJB————PersistenceBrokerTransactionManager
             JtaTransactionManager
             (PersistenceBrokerTemplate)
JMS————JmsTransactionManager
       (JmsTemplate)



在划分事务时,我们需要进行事务定义,也就是配置事务的属性。事务的属性有传播行业,隔离级别,超时值及只读标志。TransactionAttribute接口指定哪些异常将导致一个回滚,哪些应该一次性提交。


  

(1) 使用ProxyFactoryBean 和TransactionInterceptor

<!--定义本地数据源-->

<bean id="dataSource" name="dataSource" class="org.apache.commons.dbcp.BasicDataSource"           destroy-method="close">
  <property name="driverClassName" value="${jdbc.driverClassName}"/>
  <property name="url" value="${jdbc.url}"/>
  <property name="username" value="${jdbc.username}"/>
  <property name="password" value="${jdbc.password}"/>
</bean>


<!-- !定义单个jdbc数据源的事务管理器-->
<bean id="transactionManager"               class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
  <property name="dataSource" ref="dataSource"/>
</bean>

   <!—定义拦截器-->
<bean id="transactionInterceptor"
       class="org.springframework.transaction.interceptor.TransactionInterceptor">
     <property name="transactionManager">
      <ref bean="transactionManager"/>
     </property>
        <property name="transactionAttributes">
            <props>
                <prop key="insert*">PROPAGATION_REQUIRED</prop>
                <prop key="update*">PROPAGATION_REQUIRED</prop>
                <prop key="save*">PROPAGATION_REQUIRED</prop>
                <prop key="find*">PROPAGATION_SUPPORTS,readOnly</prop>
                <prop key="get*">PROPAGATION_SUPPORTS,readOnly</prop>
                <prop key="*">PROPAGATION_SUPPORTS,readOnly</prop>
            </props>
        </property>
    </bean>

<!—定义业务对象-->
<bean id="com.prs.application.ehld.sample.biz.service.sampleService.target"
       class="com.prs.application.ehld.sample.biz.service.impl.SampleServiceImpl">
  <property name="userInfoDAO"
     ref="com.prs.application.ehld.sample.integration.dao.userInfoDAO">
   </property>
</bean>

<!—定义业务对象的事务代理对象-->
<bean id="com.prs.application.ehld.sample.biz.service.sampleService" class="org.springframeword.aop.framework.ProxyFacgtoryBean">
  <property name="target"
     ref="com.prs.application.ehld.sample.biz.service.sampleService.target">
  </property>
  <property name="interceptorNames">
     <value>transactionInterceptor</value>
  </property>
</bean>

通过ProxyFacgtoryBean和TransactionInterceptor组合使用,可以对事务进行更多的控制。所有需要事务控制的对象可以共享一个transactionInterceptor的事务属性。

(2) 使用TransactionProxyFactoryBean

  <!—定义业务对象-->
<bean id="com.prs.application.ehld.sample.biz.service.sampleService.target"
       class="com.prs.application.ehld.sample.biz.service.impl.SampleServiceImpl">
  <property name="userInfoDAO"
     ref="com.prs.application.ehld.sample.integration.dao.userInfoDAO">
   </property>
</bean>

    <!—定义业务对象的事务代理对象-->
<bean id="com.prs.application.ehld.sample.biz.service.sampleService" class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean"
          abstract="true">
        <property name="transactionManager">
            <ref bean="transactionManager"/>
        </property>
<property name="target"
          ref="com.prs.application.ehld.sample.biz.service.sampleService.target" />
        <property name="transactionAttributes">
            <props>
                <prop key="insert*">PROPAGATION_REQUIRED</prop>
                <prop key="update*">PROPAGATION_REQUIRED</prop>
                <prop key="save*">PROPAGATION_REQUIRED</prop>
                <prop key="find*">PROPAGATION_SUPPORTS,readOnly</prop>
                <prop key="get*">PROPAGATION_SUPPORTS,readOnly</prop>
                <prop key="*">PROPAGATION_SUPPORTS,readOnly</prop>
            </props>
        </property>
    </bean>

使用TransactionProxyFactoryBean需要为每一个代理对象都去定义自己的事务属性。

(3) 使用TransactionProxyFactoryBean及abstract属性来简化配置
这种方工也是目前使用得最多的一种声明式事务配置方法


<!--事务控制代理抽象定义 -->
<bean id="baseTransactionProxy" class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean"
        abstract="true">
        <property name="transactionManager">
            <ref bean="transactionManager"/>
        </property>
        <property name="transactionAttributes">
            <props>
                <prop key="insert*">PROPAGATION_REQUIRED</prop>
                <prop key="update*">PROPAGATION_REQUIRED</prop>
                <prop key="save*">PROPAGATION_REQUIRED</prop>
                <prop key="find*">PROPAGATION_SUPPORTS,readOnly</prop>
                <prop key="get*">PROPAGATION_SUPPORTS,readOnly</prop>
                <prop key="*">PROPAGATION_SUPPORTS,readOnly</prop>
            </props>
        </property>
    </bean>

  <!—定义业务对象-->
<bean id="com.prs.application.ehld.sample.biz.service.sampleService.target"
       class="com.prs.application.ehld.sample.biz.service.impl.SampleServiceImpl">
  <property name="userInfoDAO"
     ref="com.prs.application.ehld.sample.integration.dao.userInfoDAO">
   </property>
</bean>

<!—定义业务对象的事务代理对象-->
<bean id="com.prs.application.ehld.sample.biz.service.sampleService" parent="baseTransactionProxy">
  <property name="target"
     ref="com.prs.application.ehld.sample.biz.service.sampleService.target">
   </property>
</bean>

使用abstract属性,可以让代理对象可以共享一个定义好的事务属性,使配置简化。

(4)使用BeanNameAutoProxyCreator
    <!—定义拦截器-->
<bean id="transactionInterceptor"
       class="org.springframework.transaction.interceptor.TransactionInterceptor">
     <property name="transactionManager">
      <ref bean="transactionManager"/>
     </property>
        <property name="transactionAttributes">
            <props>
                <prop key="insert*">PROPAGATION_REQUIRED</prop>
                <prop key="update*">PROPAGATION_REQUIRED</prop>
                <prop key="save*">PROPAGATION_REQUIRED</prop>
                <prop key="find*">PROPAGATION_SUPPORTS,readOnly</prop>
                <prop key="get*">PROPAGATION_SUPPORTS,readOnly</prop>
                <prop key="*">PROPAGATION_SUPPORTS,readOnly</prop>
            </props>
        </property>
    </bean>


<!—定义bean别名自动代理创建器-->
<bean id="autoProxyCreator"
    class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator">
    <property name="interceptorNames">
        <value>transactionInterceptor</value>
    </property>
    <property name="beanNames">
      <list>
       <idref local="com.prs.application.ehld.sample.biz.service.sampleService"/>
      </list>
    </property>
</bean>

  <!—定义业务对象-->
<bean id="com.prs.application.ehld.sample.biz.service.sampleService"
       class="com.prs.application.ehld.sample.biz.service.impl.SampleServiceImpl">
  <property name="userInfoDAO"
     ref="com.prs.application.ehld.sample.integration.dao.userInfoDAO">
   </property>
</bean>

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