Spring中的事务管理

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1、使用XML配置声明式事务

public interface BbtTopic{        void addTopic(Topic topic);        int getTopicNum();    }    public class BbtTopicImpl implements BbtTopic{        private TopicDao topicDao;        public void addTopic(Topic topic){            topicDao.addTopic(topic);        }                public int getTopicNum(){            return topicDao.getTopicNum();        }    }

我们希望对addTopic()添加写事务功能，对getTopicNum()提供读事务功能，配置如下：

首先添加tx和aop命名空间

<bean id="bbtTopic" class="xxx.xxx.BbtTopicImpl"               p:topicDao-ref="topicDao"> //引用DAO       </bean>       <bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"               p:dataSource-ref="dataSource">//引用数据源       </bean>       <aop:config>              //将xxx.xxx.service包下以Topic结尾的类纳入进行事务增强的范围              <aop:pointcut id="serviceMethod" expression="execution(* xxx.xxx.service.*Topic.*(..))"/>              <aop:advisor pointcut-ref="serviceMethod" advice-ref="txAdvice">       </aop:config>       <tx:advice id="txAdivce" transaction-manager="txManager">              <tx.attributes>                     <tx:method name="get*" read-only="true"/>                     <tx:method name="add*" rollback-for="Exception"/>              </tx.attributes>             </tx:advice>

2、使用注解配置声明式事务

（1）对实现类添加@Transactional

public interface BbtTopic{        void addTopic(Topic topic);        int getTopicNum();    }    @Transactional    public class BbtTopicImpl implements BbtTopic{        private TopicDao topicDao;        public void addTopic(Topic topic){            topicDao.addTopic(topic);        }        public int getTopicNum(){            return topicDao.getTopicNum();        }    }

（2）xml配置

<bean id="bbtTopic" class="xxx.xxx.BbtTopicImpl"               p:topicDao-ref="topicDao"> //引用DAO       </bean>       <bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"               p:dataSource-ref="dataSource">//引用数据源       </bean>       <tx:annotation-driven transaction-manager="txManager"/> //proxy-target-class="false｜true"

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