Spring 声明式事务的配置方式(一)
1.首先定义DataSource
<bean id="dataSource" class="org.apache.tomcat.dbcp.dbcp.BasicDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
<property name="url" value="jdbc:mysql://hostname:post/dbname"></property>
<property name="username" value="username"></property>
<property name="password" value="pwd"></property>
</bean>
2.定义SessionFactory
<bean id="sessionFactory"
class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<!-- 注入DataSource -->
<property name="dataSource" ref="dataSource"></property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
</props>
</property>
<property name="mappingDirectoryLocations"
value="classpath:/org/companyname/myprj/entities"></property>
</bean>
3.定义事务管理器
<bean id="transactionManager"
class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory"></property>
</bean>
4.持久层
<bean id="daoTemplate" class="org.companyname.myprj.dal.DaoTemplate"
autowire="byName"></bean>
5.业务模块
<bean id="usersService" class="org.companyname.myprj.services.impl.UserService">
<property name="daoTemplate" ref="daoTemplate"></property>
</bean>
<bean id="itemsService" class="org.companyname.myprj.services.impl.ItemService">
<property name="daoTemplate" ref="daoTemplate"></property>
</bean>
6.开始配置声明式事务
<bean id="usersBiz"
class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">
<property name="proxyInterfaces">
<list>
<value>org.companyname.myprj.services.IUsersService</value>
</list>
</property>
<property name="transactionAttributeSource"
ref="transactionAttributeSource"></property>
<property name="target" ref="usersService"></property>
<property name="transactionManager" ref="transactionManager"></property>
</bean>
<bean id="itemsBiz"
class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">
< property name="proxyInterfaces"><list>
<value>org.companyname.myprj.services.IItemsService</value>
</list>
</property>
<property name="transactionAttributeSource"
ref="transactionAttributeSource"></property>
<property name="target" ref="userService"></property>
<property name="transactionManager" ref="transactionManager"></property>
</bean>
<!-- 配置事务传递属性 -->
<bean id="transactionAttributeSource"
class="org.springframework.transaction.
interceptor.NameMatchTransactionAttributeSource">
<property name="properties">
<props>
<prop key="find*">PROPAGATION_SUPPORTS</prop>
<prop key="get*">PROPAGATION_SUPPORTS</prop>
<prop key="valid*">PROPAGATION_SUPPORTS</prop>
<prop key="reg*">PROPAGATION_REQUIRED</prop>
<prop key="modify*">PROPAGATION_REQUIRED</prop>
<prop key="process*">PROPAGATION_REQUIRED</prop>
<prop key="do*">PROPAGATION_SUPPORTS</prop>
</props>
</property>
</bean>
这种方法针对每一个业务模块会配置一个业务代理服务，如果业务模块太多的话，代码量会显得很大，因此要开始考虑继承的思想。即采用第二种配置方法