Spring基于注解的配置

    <context:component-scan base-package="com.txazo" />

Spring自动扫描组件，配置了它，就无需配置<context:annotation-config />。

<context:component-scan base-package="com.txazo">
	<context:include-filter type="regex"
		expression=".dao.impl.*" />
	<context:include-filter type="regex"
		expression=".service.impl.*" />
	<context:include-filter type="regex"
		expression=".action.*" />
</context:component-scan>

<context:annotation-config />

向Spring容器注册AutowiredAnnotationBeanPostProcessor、CommonAnnotationBeanPostProcessor、PersistenceAnnotationBeanPostProcessor 、RequiredAnnotationBeanPostProcessor这4个BeanPostProcessor，然后Spring就可以识别相应的注解。

<aop:aspectj-autoproxy />

AOP切面配置，Spring自动为配置@aspectJ切面的bean创建代理。

<bean           
    class="org.springframework.dao.annotation.
        PersistenceExceptionTranslationPostProcessor" />

Spring对任何带有@Repository注解的对象自动激活其数据访问异常转换。

<tx:annotation-driven transaction-manager="transactionManager" />

Spring的事务管理器，可以使用@Transactional注解配置声明式事务。
Spring结合Hibernate基于注解的配置如下：

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:p="http://www.springframework.org/schema/p"     
    xmlns:context="http://www.springframework.org/schema/context"
	xmlns:tx="http://www.springframework.org/schema/tx"    
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:aop="http://www.springframework.org/schema/aop"
	xsi:schemaLocation="
            http://www.springframework.org/schema/beans
            http://www.springframework.org/schema/beans/spring-beans.xsd
            http://www.springframework.org/schema/aop
            http://www.springframework.org/schema/aop/spring-aop.xsd
            http://www.springframework.org/schema/tx
            http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
            http://www.springframework.org/schema/context
            http://www.springframework.org/schema/context/
                spring-context-3.0.xsd">

	<!-- Spring Component Scan -->
	<context:component-scan base-package="com.txazo" />

	<!-- Spring AOP Aspectj Autoproxy -->
	<aop:aspectj-autoproxy />

	<!-- Spring DataAccessException Annotated With @Repository -->
	<bean
        class="org.springframework.dao.annotation.
            PersistenceExceptionTranslationPostProcessor" />

	<!-- SessionFactory -->
	<bean id="sessionFactory"
        class="org.springframework.orm.hibernate3.annotation.
            AnnotationSessionFactoryBean"
		p:configLocation="classpath:hibernate.cfg.xml" />

	<!-- HibernateTemplate -->
	<bean id="hibernateTemplate"    
        class="org.springframework.orm.hibernate3.HibernateTemplate"
		p:sessionFactory-ref="sessionFactory" />

	<!-- TransactionManager -->
	<bean id="transactionManager"
	    class="org.springframework.orm.hibernate3.HibernateTransactionManager"
		p:sessionFactory-ref="sessionFactory" />

	<!-- Declarative Transaction Management -->
	<tx:annotation-driven transaction-manager="transactionManager" />

</beans>