Spring事務配置的五種方式

360linker發表於2018-07-14

 Spring配置檔案中關於事務配置總是由三個組成部分,分別是DataSource、TransactionManager和代理機制這三部分,無論哪種配置方式,一般變化的只是代理機制這部分。

    DataSource、TransactionManager這兩部分只是會根據資料訪問方式有所變化,比如使用Hibernate進行資料訪問時,DataSource實際為SessionFactory,TransactionManager的實現為HibernateTransactionManager。

    具體如下圖:

Spring事務配置 (2)

    根據代理機制的不同,總結了五種Spring事務的配置方式,配置檔案如下:

    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>  

    
<!-- 定義事務管理器(宣告式的事務) -->  
    
<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>  

    
<!-- 定義事務管理器(宣告式的事務) -->  
    
<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">  
        
<!-- 配置事務管理器 -->  
        
<property name="transactionManager" ref="transactionManager" />  
        
<!-- 配置事務屬性 -->  
        
<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>  

    
<!-- 定義事務管理器(宣告式的事務) -->  
    
<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標籤配置的攔截器

<?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>  

    
<!-- 定義事務管理器(宣告式的事務) -->  
    
<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:全註解

<?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>  

    
<!-- 定義事務管理器(宣告式的事務) -->  
    
<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註解,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();
    }
    
    
}



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