Spring事務配置的五種方法

時間 2019-11-08

原文原文鏈接

前段時間對Spring的事務配置作了比較深刻的研究，在此之間對Spring的事務配置雖然說也配置過，可是一直沒有一個清楚的認識。經過此次的學習發覺Spring的事務配置只要把思路理清，仍是比較好掌握的。java

總結以下：spring

Spring配置文件中關於事務配置老是由三個組成部分，分別是DataSource、TransactionManager和代理機制這三部分，不管哪一種配置方式，通常變化的只是代理機制這部分。express

DataSource、TransactionManager這兩部分只是會根據數據訪問方式有所變化，好比使用Hibernate進行數據訪問時，DataSource實際爲SessionFactory，TransactionManager的實現爲HibernateTransactionManager。session

具體以下圖：dom

根據代理機制的不一樣，總結了五種Spring事務的配置方式，配置文件以下：學習

第一種方式：每一個Bean都有一個代理this

<? 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 > spa

第二種方式：全部Bean共享一個代理基類.net

<? 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 >

    

    < 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

此時在DAO上需加上@Transactional註解，以下：

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();
    }

    }