sring事务配置

一、关键配置示例：

<bean id="sessionFactory"
        class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
        <property name="dataSource">
            <ref local="dataSource" />
        </property>
</bean>  
        <!-- bean id="transactionManager" class="org.springframework.transaction.jta.JtaTransactionManager"/-->
    <bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
        <property name="sessionFactory">
            <ref local="sessionFactory" />
        </property>
    </bean>

    <!-- Hibernate Transaction Interceptor Definition -->
    <bean id="hibernateTransactionInterceptor"
        class="org.springframework.transaction.interceptor.TransactionInterceptor"
        parent="transactionIntercetorTemplate">
        <property name="transactionManager">
            <bean id="hibernateTransactionManager"
                class="org.springframework.orm.hibernate3.HibernateTransactionManager">
                <property name="sessionFactory">
                    <ref bean="sessionFactory" />
                </property>
            </bean>
        </property>
    </bean>

    <!-- Transction Intercetor's Template -->
    <bean id="transactionIntercetorTemplate" abstract="true">
        <property name="transactionAttributes">
            <props>
                <prop key="get*">PROPAGATION_REQUIRED,readOnly</prop>
                <prop key="is*">PROPAGATION_REQUIRED,readOnly</prop>
                <prop key="check*">PROPAGATION_REQUIRED,readOnly</prop>
                <prop key="insert*">PROPAGATION_REQUIRED</prop>
                <prop key="update*">PROPAGATION_REQUIRED</prop>
                <prop key="delete*">PROPAGATION_REQUIRED,-BussException</prop>
                <prop key="*">PROPAGATION_REQUIRED</prop>
            </props>
        </property>
    </bean>

    <!-- 定义自动代理生成器-->
    <bean id="autoProxyCreator"
        class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator">
        <property name="interceptorNames">
            <list>
                <idref bean="hibernateTransactionInterceptor" />
                <idref bean="jdbcTransactionInterceptor" />
            </list>
        </property>
        <property name="beanNames">
            <value>*Service</value> 
            <!--list>
                <idref bean="bookService" />                                        
            </list-->
            <!--添加Service bean-->
        </property>
    </bean>
    <bean id="hibernateDaoTemplate" abstract="true">
        <property name="sessionFactory">
            <ref bean="sessionFactory" />
        </property>
    </bean>
    <!-- Dao 定义 -->
    <bean id="imageDao" class="com.fbyssssite.dao.ImageDao"
        parent="hibernateDaoTemplate" />
    <bean id="imageFolderDao" class="com.fbyssssite.dao.ImageFolderDao"
        parent="hibernateDaoTemplate" />
    <!-- Service 定义 -->
    <bean id="imageService" class="com.fbyssssite.bo.ImageService" autowire="byName">
        <property name="dao" ref="imageDao"></property>
    </bean>    
    <bean id="imageFolderService" class="com.fbyssssite.bo.ImageFolderService" autowire="byName">
        <property name="dao" ref="imageFolderDao"></property>
    </bean>  

 
二、测试代码：

public void delete(Object entity,IBaseUser user) throws BussException ...{
   super.delete(entity, user);
   ImageFolder folder = (ImageFolder)entity;
   String folderId = folder.getId();   
   IImageService imageService  = ServiceFactory.getImageService();
   imageService.deleteAllInFolder(folderId,user);   
  }
  public void deleteAllInFolder(String id,IBaseUser sysUser) throws BussException ...{
   log.info("删除图片夹'"+id+"'中的图片...");
   throw new BussException(1,"临时测试：测试事务是否生效的异常。测试完毕后删除此语句。",log);
   /**//*
   StringBuffer sql = new StringBuffer("delete ");
   sql.append("from ");
   sql.append(getEntityClassName());
   SqlBuilder sqlBuilder  = SqlBuilder.getInstance();
   sqlBuilder.appendWhereCondition(sql, "folderId='"+id+"'");
   bulkUpdate(sql.toString(), sysUser);
   */   
  }

三、测试效果：
抛出BussException之后，imageFolder实体并没有被删除，而是回滚了。
四、注意事项：
1.其中的 BussException是一个CheckedException(继承自Exception)，这里不过是一个例子，如果其他方法需要同样的方式处理事务，也要加上-BussException，否则不能回滚；如果是一个UnCheckedException，就不需要在这里配置，默认就会回滚。
2.如果采用MySQL，show table status可以查看表的ENGINE类型，MyISAM是不支持事务的，如果需要事务，应该改成InnoDB:alter table [tablename] engine = InnoDB;