作者:fbysss
关键字：Spring,事务处理
一、关键配置示例：
<
bean
id
="sessionFactory"
class
="org.springframework.orm.hibernate3.LocalSessionFactoryBean"
>
<
property
name
="dataSource"
>
<
ref
local
="dataSource"
/>
</
property
>
<!--
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;