Spring配置事务的五种方式
博客专区 > xjt2016 的博客 > 博客详情
Spring配置事务的五种方式
xjt2016 发表于1年前
Spring配置事务的五种方式
  • 发表于 1年前
  • 阅读 8
  • 收藏 1
  • 点赞 0
  • 评论 0

【腾讯云】买域名送云解析+SSL证书+建站!>>>   

摘要: 了解事务的多个实现方式,选择最佳实践

详解Spring配置事务的五种方式

Spring配置文件中关于事务配置总是由三个组成部分,分别是 DataSource 、TransactionManager代理机制这三部分,无论哪种配置方式,一般变化的只是代理机制这部分。

DataSource、TransactionManager这两部分只是会根据数据访问方式有所变化,比如使用Hibernate进行数据访问时,DataSource实际为SessionFactory,TransactionManager的实现为HibernateTransactionManager。

具体如下图所示:

根据代理机制的不同,总结了五种Spring事务的配置方式,配置文件如下:

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"
     xsi:schemaLocation="http://www.springframework.org/schema/beans 
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">
    <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="userDaoTarget" class="com.bluesky.spring.dao.UserDaoImpl">
        <property name="sessionFactory" ref="sessionFactory"/>
    </bean>
    <bean id="userDao"
          class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">
        <!-- 配置事务管理器 -->
        <property name="transactionManager" ref="transactionManager"/>
        <property name="target" ref="userDaoTarget"/>
        <property name="proxyInterfaces" value="com.bluesky.spring.dao.GeneratorDao"/>
        <!-- 配置事务属性 -->
        <property name="transactionAttributes">
            <props>
                <prop key="*">PROPAGATION_REQUIRED</prop>
            </props>
        </property>
    </bean>
</beans>

所有Bean共享一个代理基类

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans 
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">
    <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="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="userDaoTarget" class="com.bluesky.spring.dao.UserDaoImpl">
        <property name="sessionFactory" ref="sessionFactory"/>
    </bean>
    <bean id="userDao" parent="transactionBase">
        <property name="target" ref="userDaoTarget"/>
    </bean>
</beans>

使用拦截器

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans 
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">
    <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 class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator">
        <property name="beanNames">
            <list>
                <value>*Dao</value>
            </list>
        </property>
        <property name="interceptorNames">
            <list>
                <value>transactionInterceptor</value>
            </list>
        </property>
    </bean>
    <!-- 配置DAO -->
    <bean id="userDao" class="com.bluesky.spring.dao.UserDaoImpl">
        <property name="sessionFactory" ref="sessionFactory"/>
    </bean>
</beans>

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">
    <context:annotation-config/>
    <context:component-scan base-package="com.bluesky"/>
    <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>
        <aop:pointcut id="interceptorPointCuts"
                      expression="execution(* com.bluesky.spring.dao.*.*(..))"/>
        <aop:advisor advice-ref="txAdvice"
                     pointcut-ref="interceptorPointCuts"/>
    </aop:config>
</beans>

全注解

<?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: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/tx 
http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">
    <context:annotation-config/>
    <context:component-scan base-package="com.bluesky"/>
    <tx:annotation-driven 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>
</beans>

此时在DAO上需加上@Transactional注解,如下:

package com.mktao.spring.dao; 
import java.util.List; 
import org.hibernate.SessionFactory; 
import org.springframework.beans.factory.annotation.Autowired; 
import org.springframework.orm.hibernate3.support.HibernateDaoSupport; 
import org.springframework.stereotype.Component; 
import com.bluesky.spring.domain.User; 
@Transactional
@Component("userDao") 
public class UserDaoImpl extends HibernateDaoSupport implements UserDao { 
	public List<User> listUsers() { 
		return this.getSession().createQuery("from User").list(); 
 	} 
}
  • 打赏
  • 点赞
  • 收藏
  • 分享
共有 人打赏支持
粉丝 4
博文 41
码字总数 20703
×
xjt2016
如果觉得我的文章对您有用,请随意打赏。您的支持将鼓励我继续创作!
* 金额(元)
¥1 ¥5 ¥10 ¥20 其他金额
打赏人
留言
* 支付类型
微信扫码支付
打赏金额:
已支付成功
打赏金额: