Spring配置文件中关于事务配置

Spring配置文件中关于事务配置总是由三个组成部分,DataSource、TransactionManager和代理机制这三部分,无论是那种配置方法,一般变化的只是代理机制这块!

首先我创建了两个类,一个接口一个实现:

package com.dao;   

public interface UserDao {   


    public void getUser();     

}  
package com.dao;
public interface UserDao {
	public void getUser();	
}

实现:

package com.dao.impl;   

import org.springframework.orm.hibernate3.support.HibernateDaoSupport;   


import com.dao.UserDao;   


public class UserDaoImpl extends HibernateDaoSupport implements UserDao {   


    public void getUser(){         

    }      
}  
package com.dao.impl;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;
import com.dao.UserDao;
public class UserDaoImpl extends HibernateDaoSupport implements UserDao {
	public void getUser(){		
	}	
}

第一种:每个Bean都有一个代理:

<?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: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-2.0.xsd   


           http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd   


           http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd">   

    <!-- 数据源 -->   

    <bean id="dataSource"  


        class="org.apache.commons.dbcp.BasicDataSource"  


        destroy-method="close">   


        <property name="driverClassName" value="com.mysql.jdbc.Driver" />   


        <property name="url"  


            value="jdbc:mysql://192.168.0.244:3306/test?useUnicode=true&amp;characterEncoding=UTF-8" />   


        <property name="username" value="root" />   


        <property name="password" value="root" />   

        <!-- 连接池启动时的初始值 -->   

        <property name="initialSize" value="10" />   

        <!-- 连接池的最大值 -->   

        <property name="maxActive" value="10" />   

        <!-- 最大空闲值.当经过一个高峰时间后,连接池可以慢慢将已经用不到的连接慢慢释放一部分,一直减少到maxIdle为止 -->   

        <property name="maxIdle" value="20" />   

        <!--  最小空闲值.当空闲的连接数少于阀值时,连接池就会预申请去一些连接,以免洪峰来时来不及申请 -->   

        <property name="minIdle" value="10" />   


        <property name="defaultAutoCommit" value="true" />   

    </bean>   
    <!-- 会话工厂 -->   

    <bean id="sessionFactory"  


        class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">   


        <property name="dataSource" ref="dataSource" />   


        <property name="mappingLocations">   

            <list>   

                <value>classpath:/com/nms/entity/**/*.hbm.xml</value>   

            </list>   
        </property>   

        <property name="hibernateProperties">   

            <props>   

                <prop key="hibernate.dialect">   

                    org.hibernate.dialect.MySQL5Dialect   
                </prop>   

                <prop key="hibernate.show_sql">true</prop>   


                <prop key="hibernate.format_sql">true</prop>   

            </props>   
        </property>   
    </bean>   
    <!-- 定义事务管理器 -->   

    <bean id="transactionManager"  


        class="org.springframework.orm.hibernate3.HibernateTransactionManager">   


        <property name="sessionFactory" ref="sessionFactory" />   

    </bean>   
     <!-- 定义事务 -->   

    <bean id="base"  


        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>   
    <!-- 配置服务层 -->   

    <bean id="userDao"  


        class="com.dao.impl.UserDaoImpl">   


        <property name="sessionFactory" ref="sessionFactory" />   

    </bean>   
    <!-- 代理对象 -->   

    <bean id="userDaoAgency" parent="base">   


        <property name="target" ref="userDao" />   

    </bean>   
</beans>  
<?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: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-2.0.xsd
           http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
           http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd">
	<!-- 数据源 -->
	<bean id="dataSource"
		class="org.apache.commons.dbcp.BasicDataSource"
		destroy-method="close">
		<property name="driverClassName" value="com.mysql.jdbc.Driver" />
		<property name="url"
			value="jdbc:mysql://192.168.0.244:3306/test?useUnicode=true&amp;characterEncoding=UTF-8" />
		<property name="username" value="root" />
		<property name="password" value="root" />
		<!-- 连接池启动时的初始值 -->
		<property name="initialSize" value="10" />
		<!-- 连接池的最大值 -->
		<property name="maxActive" value="10" />
		<!-- 最大空闲值.当经过一个高峰时间后,连接池可以慢慢将已经用不到的连接慢慢释放一部分,一直减少到maxIdle为止 -->
		<property name="maxIdle" value="20" />
		<!--  最小空闲值.当空闲的连接数少于阀值时,连接池就会预申请去一些连接,以免洪峰来时来不及申请 -->
		<property name="minIdle" value="10" />
		<property name="defaultAutoCommit" value="true" />
	</bean>
	<!-- 会话工厂 -->
	<bean id="sessionFactory"
		class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
		<property name="dataSource" ref="dataSource" />
		<property name="mappingLocations">
			<list>
				<value>classpath:/com/nms/entity/**/*.hbm.xml</value>
			</list>
		</property>
		<property name="hibernateProperties">
			<props>
				<prop key="hibernate.dialect">
					org.hibernate.dialect.MySQL5Dialect
				</prop>
				<prop key="hibernate.show_sql">true</prop>
				<prop key="hibernate.format_sql">true</prop>
			</props>
		</property>
	</bean>
	<!-- 定义事务管理器 -->
	<bean id="transactionManager"
		class="org.springframework.orm.hibernate3.HibernateTransactionManager">
		<property name="sessionFactory" ref="sessionFactory" />
	</bean>
	 <!-- 定义事务 -->
	<bean id="base"
		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>
	<!-- 配置服务层 -->
	<bean id="userDao"
		class="com.dao.impl.UserDaoImpl">
		<property name="sessionFactory" ref="sessionFactory" />
	</bean>
	<!-- 代理对象 -->
	<bean id="userDaoAgency" parent="base">
		<property name="target" ref="userDao" />
	</bean>
</beans>

第三种:拦截器:

<?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: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-2.0.xsd   


           http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd   


           http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd">   

    <!-- 数据源 -->   

    <bean id="dataSource"  


        class="org.apache.commons.dbcp.BasicDataSource"  


        destroy-method="close">   


        <property name="driverClassName" value="com.mysql.jdbc.Driver" />   


        <property name="url"  


            value="jdbc:mysql://192.168.0.244:3306/test?useUnicode=true&amp;characterEncoding=UTF-8" />   


        <property name="username" value="root" />   


        <property name="password" value="root" />   

        <!-- 连接池启动时的初始值 -->   

        <property name="initialSize" value="10" />   

        <!-- 连接池的最大值 -->   

        <property name="maxActive" value="10" />   

        <!-- 最大空闲值.当经过一个高峰时间后,连接池可以慢慢将已经用不到的连接慢慢释放一部分,一直减少到maxIdle为止 -->   

        <property name="maxIdle" value="20" />   

        <!--  最小空闲值.当空闲的连接数少于阀值时,连接池就会预申请去一些连接,以免洪峰来时来不及申请 -->   

        <property name="minIdle" value="10" />   


        <property name="defaultAutoCommit" value="true" />   

    </bean>   
    <!-- 会话工厂 -->   

    <bean id="sessionFactory"  


        class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">   


        <property name="dataSource" ref="dataSource" />   


        <property name="mappingLocations">   

            <list>   

                <value>classpath:/com/nms/entity/**/*.hbm.xml</value>   

            </list>   
        </property>   

        <property name="hibernateProperties">   

            <props>   

                <prop key="hibernate.dialect">   

                    org.hibernate.dialect.MySQL5Dialect   
                </prop>   

                <prop key="hibernate.show_sql">true</prop>   


                <prop key="hibernate.format_sql">true</prop>   

            </props>   
        </property>   
    </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>      
     <!-- 定义事务 -->    

    <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 class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator">     


        <property name="beanNames">     

            <list>     
                <value>*DaoImpl</value>   
            </list>     
        </property>     

        <property name="interceptorNames">     

            <list>     
                <value>transactionInterceptor</value>     
            </list>     
        </property>     
    </bean>     
    <!-- 配置服务层 -->   

    <bean id="userDaoAgency" class="com.dao.impl.UserDaoImpl">   


        <property name="sessionFactory" ref="sessionFactory" />   

    </bean>   
</beans>  
<?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: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-2.0.xsd
           http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
           http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd">
	<!-- 数据源 -->
	<bean id="dataSource"
		class="org.apache.commons.dbcp.BasicDataSource"
		destroy-method="close">
		<property name="driverClassName" value="com.mysql.jdbc.Driver" />
		<property name="url"
			value="jdbc:mysql://192.168.0.244:3306/test?useUnicode=true&amp;characterEncoding=UTF-8" />
		<property name="username" value="root" />
		<property name="password" value="root" />
		<!-- 连接池启动时的初始值 -->
		<property name="initialSize" value="10" />
		<!-- 连接池的最大值 -->
		<property name="maxActive" value="10" />
		<!-- 最大空闲值.当经过一个高峰时间后,连接池可以慢慢将已经用不到的连接慢慢释放一部分,一直减少到maxIdle为止 -->
		<property name="maxIdle" value="20" />
		<!--  最小空闲值.当空闲的连接数少于阀值时,连接池就会预申请去一些连接,以免洪峰来时来不及申请 -->
		<property name="minIdle" value="10" />
		<property name="defaultAutoCommit" value="true" />
	</bean>
	<!-- 会话工厂 -->
	<bean id="sessionFactory"
		class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
		<property name="dataSource" ref="dataSource" />
		<property name="mappingLocations">
			<list>
				<value>classpath:/com/nms/entity/**/*.hbm.xml</value>
			</list>
		</property>
		<property name="hibernateProperties">
			<props>
				<prop key="hibernate.dialect">
					org.hibernate.dialect.MySQL5Dialect
				</prop>
				<prop key="hibernate.show_sql">true</prop>
				<prop key="hibernate.format_sql">true</prop>
			</props>
		</property>
	</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>   
     <!-- 定义事务 --> 
    <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 class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator">  
        <property name="beanNames">  
            <list>  
                <value>*DaoImpl</value>
            </list>  
        </property>  
        <property name="interceptorNames">  
            <list>  
                <value>transactionInterceptor</value>  
            </list>  
        </property>  
    </bean>  
    <!-- 配置服务层 -->
    <bean id="userDaoAgency" class="com.dao.impl.UserDaoImpl">
        <property name="sessionFactory" ref="sessionFactory" />
    </bean>
</beans>

第四种:使用tx标签配置的拦截器:

<?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">   

    <!-- 数据源 -->   

    <bean id="dataSource"  


        class="org.apache.commons.dbcp.BasicDataSource"  


        destroy-method="close">   


        <property name="driverClassName" value="com.mysql.jdbc.Driver" />   


        <property name="url"  


            value="jdbc:mysql://192.168.0.244:3306/test?useUnicode=true&amp;characterEncoding=UTF-8" />   


        <property name="username" value="root" />   


        <property name="password" value="root" />   

        <!-- 连接池启动时的初始值 -->   

        <property name="initialSize" value="10" />   

        <!-- 连接池的最大值 -->   

        <property name="maxActive" value="10" />   

        <!-- 最大空闲值.当经过一个高峰时间后,连接池可以慢慢将已经用不到的连接慢慢释放一部分,一直减少到maxIdle为止 -->   

        <property name="maxIdle" value="20" />   

        <!--  最小空闲值.当空闲的连接数少于阀值时,连接池就会预申请去一些连接,以免洪峰来时来不及申请 -->   

        <property name="minIdle" value="10" />   


        <property name="defaultAutoCommit" value="true" />   

    </bean>   
    <!-- 会话工厂 -->   

    <bean id="sessionFactory"  


        class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">   


        <property name="dataSource" ref="dataSource" />   


        <property name="mappingLocations">   

            <list>   

                <value>classpath:/com/nms/entity/**/*.hbm.xml</value>   

            </list>   
        </property>   

        <property name="hibernateProperties">   

            <props>   

                <prop key="hibernate.dialect">   

                    org.hibernate.dialect.MySQL5Dialect   
                </prop>   

                <prop key="hibernate.show_sql">true</prop>   


                <prop key="hibernate.format_sql">true</prop>   

            </props>   
        </property>   
    </bean>   
    <context:annotation-config />   

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

    <!-- 定义事务管理器 -->     

    <bean id="transactionManager"  


        class="org.springframework.orm.hibernate3.HibernateTransactionManager">   


        <property name="sessionFactory" ref="sessionFactory" />   

    </bean>   
    <!-- 定义事务 -->   

    <tx:advice id="txAdvice" transaction-manager="transactionManager">   

        <tx:attributes>   

            <tx:method name="*" propagation="REQUIRED" />   

        </tx:attributes>   
    </tx:advice>   
    <!-- 定义切面 -->   
    <aop:config>   

        <aop:pointcut id="interceptorPointCuts" expression="execution(* com.dao.*.*(..))" />   


        <aop:advisor advice-ref="txAdvice" pointcut-ref="interceptorPointCuts" />   

    </aop:config>   
</beans>  
<?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">
	<!-- 数据源 -->
	<bean id="dataSource"
		class="org.apache.commons.dbcp.BasicDataSource"
		destroy-method="close">
		<property name="driverClassName" value="com.mysql.jdbc.Driver" />
		<property name="url"
			value="jdbc:mysql://192.168.0.244:3306/test?useUnicode=true&amp;characterEncoding=UTF-8" />
		<property name="username" value="root" />
		<property name="password" value="root" />
		<!-- 连接池启动时的初始值 -->
		<property name="initialSize" value="10" />
		<!-- 连接池的最大值 -->
		<property name="maxActive" value="10" />
		<!-- 最大空闲值.当经过一个高峰时间后,连接池可以慢慢将已经用不到的连接慢慢释放一部分,一直减少到maxIdle为止 -->
		<property name="maxIdle" value="20" />
		<!--  最小空闲值.当空闲的连接数少于阀值时,连接池就会预申请去一些连接,以免洪峰来时来不及申请 -->
		<property name="minIdle" value="10" />
		<property name="defaultAutoCommit" value="true" />
	</bean>
	<!-- 会话工厂 -->
	<bean id="sessionFactory"
		class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
		<property name="dataSource" ref="dataSource" />
		<property name="mappingLocations">
			<list>
				<value>classpath:/com/nms/entity/**/*.hbm.xml</value>
			</list>
		</property>
		<property name="hibernateProperties">
			<props>
				<prop key="hibernate.dialect">
					org.hibernate.dialect.MySQL5Dialect
				</prop>
				<prop key="hibernate.show_sql">true</prop>
				<prop key="hibernate.format_sql">true</prop>
			</props>
		</property>
	</bean>
	<context:annotation-config />
	<context:component-scan base-package="com.dao" />
	<!-- 定义事务管理器 -->  
    <bean id="transactionManager"
        class="org.springframework.orm.hibernate3.HibernateTransactionManager">
        <property name="sessionFactory" ref="sessionFactory" />
    </bean>
    <!-- 定义事务 -->
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <tx:method name="*" propagation="REQUIRED" />
        </tx:attributes>
    </tx:advice>
    <!-- 定义切面 -->
    <aop:config>
        <aop:pointcut id="interceptorPointCuts" expression="execution(* com.dao.*.*(..))" />
        <aop:advisor advice-ref="txAdvice" pointcut-ref="interceptorPointCuts" />
    </aop:config>
</beans>

第五种:注解:

<?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">   

    <!-- 数据源 -->   

    <bean id="dataSource"  


        class="org.apache.commons.dbcp.BasicDataSource"  


        destroy-method="close">   


        <property name="driverClassName" value="com.mysql.jdbc.Driver" />   


        <property name="url"  


            value="jdbc:mysql://192.168.0.244:3306/test?useUnicode=true&amp;characterEncoding=UTF-8" />   


        <property name="username" value="root" />   


        <property name="password" value="root" />   

        <!-- 连接池启动时的初始值 -->   

        <property name="initialSize" value="10" />   

        <!-- 连接池的最大值 -->   

        <property name="maxActive" value="10" />   

        <!-- 最大空闲值.当经过一个高峰时间后,连接池可以慢慢将已经用不到的连接慢慢释放一部分,一直减少到maxIdle为止 -->   

        <property name="maxIdle" value="20" />   

        <!--  最小空闲值.当空闲的连接数少于阀值时,连接池就会预申请去一些连接,以免洪峰来时来不及申请 -->   

        <property name="minIdle" value="10" />   


        <property name="defaultAutoCommit" value="true" />   

    </bean>   
    <!-- 会话工厂 -->   

    <bean id="sessionFactory"  


        class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">   


        <property name="dataSource" ref="dataSource" />   


        <property name="mappingLocations">   

            <list>   

                <value>classpath:/com/nms/entity/**/*.hbm.xml</value>   

            </list>   
        </property>   

        <property name="hibernateProperties">   

            <props>   

                <prop key="hibernate.dialect">   

                    org.hibernate.dialect.MySQL5Dialect   
                </prop>   

                <prop key="hibernate.show_sql">true</prop>   


                <prop key="hibernate.format_sql">true</prop>   

            </props>   
        </property>   
    </bean>   
    <context:annotation-config />   
    <!-- 使用注解的包路径 -->   

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


    <!-- 支持  @Transactional 标记 -->   


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

    <!-- 定义事务管理器 -->     

    <bean id="transactionManager"  


        class="org.springframework.orm.hibernate3.HibernateTransactionManager">   


        <property name="sessionFactory" ref="sessionFactory" />   

    </bean>   
</beans>  
<?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">
	<!-- 数据源 -->
	<bean id="dataSource"
		class="org.apache.commons.dbcp.BasicDataSource"
		destroy-method="close">
		<property name="driverClassName" value="com.mysql.jdbc.Driver" />
		<property name="url"
			value="jdbc:mysql://192.168.0.244:3306/test?useUnicode=true&amp;characterEncoding=UTF-8" />
		<property name="username" value="root" />
		<property name="password" value="root" />
		<!-- 连接池启动时的初始值 -->
		<property name="initialSize" value="10" />
		<!-- 连接池的最大值 -->
		<property name="maxActive" value="10" />
		<!-- 最大空闲值.当经过一个高峰时间后,连接池可以慢慢将已经用不到的连接慢慢释放一部分,一直减少到maxIdle为止 -->
		<property name="maxIdle" value="20" />
		<!--  最小空闲值.当空闲的连接数少于阀值时,连接池就会预申请去一些连接,以免洪峰来时来不及申请 -->
		<property name="minIdle" value="10" />
		<property name="defaultAutoCommit" value="true" />
	</bean>
	<!-- 会话工厂 -->
	<bean id="sessionFactory"
		class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
		<property name="dataSource" ref="dataSource" />
		<property name="mappingLocations">
			<list>
				<value>classpath:/com/nms/entity/**/*.hbm.xml</value>
			</list>
		</property>
		<property name="hibernateProperties">
			<props>
				<prop key="hibernate.dialect">
					org.hibernate.dialect.MySQL5Dialect
				</prop>
				<prop key="hibernate.show_sql">true</prop>
				<prop key="hibernate.format_sql">true</prop>
			</props>
		</property>
	</bean>
	<context:annotation-config />
	<!-- 使用注解的包路径 -->
	<context:component-scan base-package="com.dao" />
	<!-- 支持  @Transactional 标记 -->
	<tx:annotation-driven transaction-manager="transactionManager"/>
	<!-- 定义事务管理器 -->  
    <bean id="transactionManager"
        class="org.springframework.orm.hibernate3.HibernateTransactionManager">
        <property name="sessionFactory" ref="sessionFactory" />
    </bean>
</beans>

如果使用了注解,那么实现类应该这样写:

package com.dao.impl;   

import org.springframework.orm.hibernate3.support.HibernateDaoSupport;   


import org.springframework.stereotype.Component;   


import org.springframework.transaction.annotation.Transactional;   


import com.dao.UserDao;   


@Transactional  


@Component("userDaoAgency")   


public class UserDaoImpl extends HibernateDaoSupport implements UserDao {   


    /**  
     * 为方法增加事务处理特性  
     */  

    @Transactional(readOnly=true)   


    public void getUser(){         

    }      
}  
package com.dao.impl;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;
import org.springframework.stereotype.Component;
import org.springframework.transaction.annotation.Transactional;
import com.dao.UserDao;
@Transactional
@Component("userDaoAgency")
public class UserDaoImpl extends HibernateDaoSupport implements UserDao {
	/**
	 * 为方法增加事务处理特性
	 */
	@Transactional(readOnly=true)
	public void getUser(){		
	}	
}

这样每个方法都能自己定义自己的事务处理!

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