段時(shí)間對(duì)Spring事務(wù)配置做了比較深入的研究,在此之間對(duì)Spring事務(wù)配置雖說(shuō)也配置過(guò),但是一直沒(méi)有一個(gè)清楚的認(rèn)識(shí)。通過(guò)這次的學(xué)習(xí)發(fā)覺(jué)Spring事務(wù)配置只要把思路理清,還是比較好掌握的。
總結(jié)如下:
Spring配置文件中關(guān)于Spring事務(wù)配置總是由三個(gè)組成部分,分別是DataSource、TransactionManager和代理機(jī)制這三部分,無(wú)論哪種配置方式,一般變化的只是代理機(jī)制這部分。
DataSource、TransactionManager這兩部分只是會(huì)根據(jù)數(shù)據(jù)訪問(wèn)方式有所變化,比如使用Hibernate進(jìn)行數(shù)據(jù)訪問(wèn)時(shí),DataSource實(shí)際為SessionFactory,TransactionManager的實(shí)現(xiàn)為 HibernateTransactionManager。
具體如下圖:
根據(jù)代理機(jī)制的不同,總結(jié)了五種Spring事務(wù)的配置方式,配置文件如下:
第一種方式:每個(gè)Bean都有一個(gè)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:context = "http://www.springframework.org/schema/context"
- xmlns:aop = "http://www.springframework.org/schema/aop"
- 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 " >
- < 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 >
- <!--定義事務(wù)管理器(聲明式的事務(wù))-->
- < 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" >
- <!--配置事務(wù)管理器-->
- < property name = "transactionManager" ref = "transactionManager" />
- < property name = "target" ref = "userDaoTarget" />
- < property name = "proxyInterfaces" value = "com.bluesky.spring.dao.GeneratorDao" />
- <!--配置事務(wù)屬性-->
- < property name = "transactionAttributes" >
- < props >
- < prop key = "*" > PROPAGATION_REQUIRED </ prop >
- </ props >
- </ property >
- </ bean >
- </ beans >
第二種方式:所有Bean共享一個(gè)父類(lèi)bean
- <? 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"
- 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 " >
- < 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 >
- <!--定義事務(wù)管理器(聲明式的事務(wù))-->
- < 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" >
- <!--配置事務(wù)管理器-->
- < property name = "transactionManager" ref = "transactionManager" />
- <!--配置事務(wù)屬性-->
- < 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 >
第三種方式:使用攔截器
- <? 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"
- 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 " >
- < 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 >
- <!--定義事務(wù)管理器(聲明式的事務(wù))-->
- < 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" />
- <!--配置事務(wù)屬性-->
- < 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 >
第四種方式:使用tx標(biāo)簽配置的攔截器
- <? 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 >
- <!--定義事務(wù)管理器(聲明式的事務(wù))-->
- < 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 >
第五種方式: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: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" />
- < 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 >
- <!--定義事務(wù)管理器(聲明式的事務(wù))-->
- < bean id = "transactionManager"
- class = "org.springframework.orm.hibernate3.HibernateTransactionManager" >
- < property name = "sessionFactory" ref = "sessionFactory" />
- </ bean >
- </ beans >
此時(shí)在DAO上需加上@Transactional注解,如下:
- packagecom.bluesky.spring.dao;
- importjava.util.List;
- importorg.hibernate.SessionFactory;
- importorg.springframework.beans.factory.annotation.Autowired;
- importorg.springframework.orm.hibernate3.support.HibernateDaoSupport;
- importorg.springframework.stereotype.Component;
- importcom.bluesky.spring.domain.User;
- @Transactional
- @Component("userDao")
- publicclassUserDaoImplextendsHibernateDaoSupportimplementsUserDao{
- publicList < User > listUsers(){
- returnthis.getSession().createQuery("fromUser").list();
- }
-
}
?
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