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Spring事務(wù)配置的五種方式

Spring配置文件中關(guān)于事務(wù)配置總是由三個組成部分，分別是DataSource、TransactionManager和代理機(jī)制這三部分，無論哪種配置方式，一般變化的只是代理機(jī)制這部分。

DataSource、TransactionManager這兩部分只是會根據(jù)數(shù)據(jù)訪問方式有所變化，比如使用Hibernate進(jìn)行數(shù)據(jù)訪問時，DataSource實際為SessionFactory，TransactionManager的實現(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Bean都有一個代理

<? 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 >

< bean id ="transactionManager"

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

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

</ bean >

< bean id ="userDaoTarget" class ="com.bluesky.spring.dao.UserDaoImpl" >

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

</ bean >

< bean id ="userDao"

class ="org.springframework.transaction.interceptor.TransactionProxyFactoryBean" >

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

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

< property name ="proxyInterfaces" value ="com.bluesky.spring.dao.GeneratorDao" />

< property name ="transactionAttributes" >

< props >

< prop key ="*" > PROPAGATION_REQUIRED </ prop >

</ props >

</ property >

</ bean >

</ beans >

第二種方式：所有Bean共享一個代理基類

<? 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 >

< 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" >

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

< property name ="transactionAttributes" >

< props >

< prop key ="*" > PROPAGATION_REQUIRED </ prop >

</ props >

</ property >

</ bean >

< 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 >

< 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" />

< 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 >

< 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 >

< 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 >

< bean id ="transactionManager"

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

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

</ bean >

</ beans >

此時在DAO上需加上@Transactional注解，如下：

package com.bluesky.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();

}

posted on 2011-11-08 23:14 paulwong 閱讀(496) 評論(0) 編輯收藏所屬分類: SPRING

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Spring事務(wù)配置的五種方式