Spring事務配置的五種方式

時間 2019-11-17

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。html

總結以下：java

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。spring

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。express

具體以下圖：session

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：dom

第一種方式：每一個Bean都有一個代理post

<? 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：全部Bean共享一個代理基類學習

<? 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 ="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spa

<? 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();
    }

}