spring的事物配置方式

 

根据代理机制不同，有以下几种配置方式：(推荐使用第四种方式，做spring的事物)

 

首先定义一个接口和实现类，并在此基础上进行配置---

Java代码  

public interface IUserDao {  
 public void insertUser(UserTable user);  
}  
 

 

Java代码  

public class UserDaoImpl extends HibernateDaoSupport implements IUserDao{  
    public void insertUser(UserTable user) {  
        getHibernateTemplate().saveOrUpdate(user);  
    }  
}  
 

 

 

• 第一种：每个bean设置一个代理，这种是根据具体需求来定，如要对具体到每个交易进行事务操作的话，这个方式是最合适的

 

<!-- 每个bean都有一个代理 -->  

<beans>  
    <!-- sessionFactory相当于spring datasource -->  
    <bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">    
        <property name="configLocation" value="classpath:hibernate.cfg.xml" />    
        <property name="configurationClass" value="org.hibernate.cfg.AnnotationConfiguration" />  
    </bean>    
    <!-- 定义事务管理器（声明式的事务） -->    
    <bean id="transactionManager"  
        class="org.springframework.orm.hibernate3.HibernateTransactionManager">  
        <property name="sessionFactory" ref="sessionFactory" />  
    </bean>  
      
    <!-- 配置DAO -->  
    <bean id="userDao" class="org.lgh.spring.transaction2.UserDaoImpl">  
        <property name="sessionFactory" ref="sessionFactory" />  
    </bean>  
    <!-- 每个bean都有一个代理 <property name="target" ref="userDaoTarget" />  -->  
    <bean id="userDaoProxy"    
        class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">    
           <!-- 配置事务管理器 -->    
           <property name="transactionManager" ref="transactionManager" />       
        <property name="target" ref="userDao" />    
         <property name="proxyInterfaces" value="org.lgh.spring.transaction2.IUserDao" />  
        <!-- 配置事务属性 -->    
        <property name="transactionAttributes">    
            <props>    
                <prop key="*">PROPAGATION_REQUIRED</prop>  
            </props>    
        </property>    
    </bean>    
</beans>  

 

 

• 第二种：所有的bean共享一个代理

 

 <!-- 所有的bean共享一个代理-->  
<beans>  
    <bean id="sessionFactory"    
            class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">    
        <property name="configLocation" value="classpath:hibernate.cfg.xml" />    
        <property name="configurationClass" value="org.hibernate.cfg.AnnotationConfiguration" />  
    </bean>    
    <!-- 定义事务管理器（声明式的事务） -->    
    <bean id="transactionManager"  
        class="org.springframework.orm.hibernate3.HibernateTransactionManager">  
        <property name="sessionFactory" ref="sessionFactory" />  
    </bean>  
    <!-- 所有的bean共享一个代理/>  -->  
    <bean id="transactionBase"    
            class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean"    
            lazy-init="true" abstract="true">    
        <!-- 配置事务管理器 -->    
        <property name="transactionManager" ref="transactionManager" />    
        <!-- 配置事务属性 -->    
        <property name="transactionAttributes">    
            <props>    
                <prop key="*">PROPAGATION_REQUIRED</prop>    
            </props>    
        </property>    
    </bean>      
    <!-- 配置DAO -->  
    <bean id="userDao" class="org.lgh.spring.transaction3.UserDaoImpl">  
        <property name="sessionFactory" ref="sessionFactory" />  
    </bean>  
     <!-- 所有的bean共享一个代理/>  -->  
    <bean id="userDaoProxy" parent="transactionBase" >    
        <property name="target" ref="userDao" />     
    </bean>  
</beans>  

 

 

• 第三种：使用拦截器 来配置你的事务，这个主要是进行一些方法调用前后进行一些其他事件的处理，如进行权限检查等...

 

<!-- 使用拦截器 -->  
  
<beans>  
    <bean id="sessionFactory"    
            class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">    
        <property name="configLocation" value="classpath:hibernate.cfg.xml" />    
        <property name="configurationClass" value="org.hibernate.cfg.AnnotationConfiguration" />  
    </bean>    
    <!-- 定义事务管理器（声明式的事务） -->    
    <bean id="transactionManager"  
        class="org.springframework.orm.hibernate3.HibernateTransactionManager">  
        <property name="sessionFactory" ref="sessionFactory" />  
    </bean>   
    <bean id="transactionInterceptor"    
        class="org.springframework.transaction.interceptor.TransactionInterceptor">    
        <property name="transactionManager" ref="transactionManager" />    
        <!-- 配置事务属性 -->    
        <property name="transactionAttributes">    
            <props>    
                <prop key="*">PROPAGATION_REQUIRED</prop>    
            </props>    
        </property>    
    </bean>  
    <bean name="logger" class="org.lgh.spring.transaction4.SpringAOPInterceptor">  
    </bean>  
    <bean id="logBeforeAdvice" class="com.spring.advices.LogBeforeAdvice">  
    </bean>  
    <!-- 定义BeanNameAutoProxyCreator,该bean是个bean后处理器，无需被引用，因此没有id属性     
    这个bean后处理器，根据事务拦截器为目标bean自动创建事务代理    -->  
    <bean class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator">    
        <!-- 加上此句就不会抛出 $Proxy cannot be cast的异常啦-->  
        <property name="proxyTargetClass">  
              <value>true</value>  
        </property>    
        <property name="beanNames">    
            <list>    
            <!-- *Dao对应下面的userDao要对它进行拦截-->  
                <value>userDao</value>  
            </list>    
        </property>    
        <property name="interceptorNames">    
            <list>    
                <value>transactionInterceptor</value>    
                <value>logBeforeAdvice</value>  
            </list>    
        </property>    
    </bean>    
    <!-- 配置DAO -->  
    <bean id="userDao" class="org.lgh.spring.transaction4.UserDaoImpl">  
        <property name="sessionFactory" ref="sessionFactory" />  
    </bean>  
    <!-- 服务层 service-->  
     <bean id="userService" class="org.lgh.spring.transaction4.UserServiceImpl">  
        <property name="userDao" ref="userDao" />  
    </bean>  
</beans>  

 

 

• 第四种：使用aop:config配置方式

 

<beans xmlns="http://www.springframework.org/schema/beans"  
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
    xmlns:context="http://www.springframework.org/schema/context"  
    xmlns:aop="http://www.springframework.org/schema/aop"  
    xmlns:tx="http://www.springframework.org/schema/tx"  
    xsi:schemaLocation="http://www.springframework.org/schema/beans   
           http://www.springframework.org/schema/beans/spring-beans-2.5.xsd  
           http://www.springframework.org/schema/context  
           http://www.springframework.org/schema/context/spring-context-2.5.xsd  
           http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd  
           http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">  
 <context:annotation-config />  
    <context:component-scan base-package="org.lgh.spring.transaction5" />  
    <bean id="sessionFactory"    
            class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">    
        <property name="configLocation" value="classpath:hibernate.cfg.xml" />    
        <property name="configurationClass" value="org.hibernate.cfg.AnnotationConfiguration" />  
    </bean>    
    <!-- 定义事务管理器（声明式的事务） -->    
    <bean id="transactionManager"  
        class="org.springframework.orm.hibernate3.HibernateTransactionManager">  
        <property name="sessionFactory" ref="sessionFactory" />  
    </bean>  
    <tx:advice id="txAdvice" transaction-manager="transactionManager">  
        <tx:attributes> 
<tx:method name="add*" propagation="REQUIRED" />
<tx:method name="delete*" propagation="REQUIRED" />
 <tx:method name="update*" propagation="REQUIRED" />
<tx:method name="add*" propagation="REQUIRED" />
<tx:method name="*" propagation="REQUIRED" />  
</tx:attributes>  
    </tx:advice>  
    <aop:config   proxy-target-class="true" >  
        <aop:pointcut id="interceptorPointCuts"  
            expression="execution(* org.lgh.spring.transaction5.*.*(..))" />  
        <aop:advisor advice-ref="txAdvice"  
            pointcut-ref="interceptorPointCuts" />          
    </aop:config>       
    <!-- 配置DAO -->  
    <bean id="userDao" class="org.lgh.spring.transaction5.UserDaoImpl">  
        <property name="sessionFactory" ref="sessionFactory" />  
    </bean>  
</beans>  

 

 

 

execution(* org.lgh.spring.transaction5.*.*(..))中：

第一个 * —— 通配 任意返回值类型|

|第二个 * —— 通配 包org.lgh.spring.transaction5下的任意class|

|第三个 * —— 通配 包org.lgh.spring.transaction5下的任意class的任意方法|

|第四个 .. —— 通配 方法可以有0个或多个参数|

 

•  第五种：注解方式：

 

<beans xmlns="http://www.springframework.org/schema/beans"  
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
    xmlns:context="http://www.springframework.org/schema/context"  
    xmlns:aop="http://www.springframework.org/schema/aop"  
    xmlns:tx="http://www.springframework.org/schema/tx"  
    xsi:schemaLocation="http://www.springframework.org/schema/beans   
           http://www.springframework.org/schema/beans/spring-beans-2.5.xsd  
           http://www.springframework.org/schema/context  
           http://www.springframework.org/schema/context/spring-context-2.5.xsd  
           http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd  
           http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">  
 <context:annotation-config />  
    <context:component-scan base-package="org.lgh.spring.transaction6" />  
    <tx:annotation-driven proxy-target-class ="true" transaction-manager="transactionManager"/>   
    <bean id="sessionFactory"    
            class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">    
        <property name="configLocation" value="classpath:hibernate.cfg.xml" />    
        <property name="configurationClass" value="org.hibernate.cfg.AnnotationConfiguration" />  
    </bean>    
    <!-- 定义事务管理器（声明式的事务） -->    
    <bean id="transactionManager"  
        class="org.springframework.orm.hibernate3.HibernateTransactionManager">  
        <property name="sessionFactory" ref="sessionFactory" />  
    </bean>  
    <!-- 配置DAO -->  
    <bean id="userDao" class="org.lgh.spring.transaction6.UserDaoImpl">  
          
        <property name="sessionFactory" ref="sessionFactory" />  
    </bean>  
      
</beans>