Spring的四种配置方式

Spring的4种配置方式

根据代理机制不同，有以下几种配置方式：

 

 

 先定义一个DAO接口及实现类:

 

 

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

 

实现类：

 

 

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

 

 

第一种

 

    为每个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；

 

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">
<!-- 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

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">
  <!-- 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...

代码如下:

 

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">
 
<!-- 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

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

 

 

 

 

 

 

 

还有一种就是采用全注解方式：

    代码如下:

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

<!--全注解 -->
<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>

 

 

所用到的jar如下: