3-Spring配置事务的五种方式

转载自:https://www.jianshu.com/p/93bc4a8ebd0d

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2017.12.21 11:34 字数 232 阅读 2293评论 5喜欢 13

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 和 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:

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:

第一种方式:每个Bean都有一个代理

          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">PROPAGATION_REQUIRED

第二种方式:所有Bean共享一个代理基类

          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">PROPAGATION_REQUIRED

第三种方式:使用拦截器

          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">PROPAGATION_REQUIRED*DaotransactionInterceptor

第四种方式:使用tx标签配置的拦截器

          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">

第五种方式:全注解

          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">

此时在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{publicListlistUsers(){returnthis.getSession().createQuery("from User").list();    }}

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