事务（十五）

Spring Boot中不需要加 @EnableTransactionManagement 来开启事务

1 Spring中 纯XML 配置事务

 1 <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
 2     <property name="dataSource" ref="pooledDataSource"/>
 3 </bean>
 4 <aop:config>
 5     <aop:pointcut expression="execution(* cn.yuanyu.crud.service..*(..))" id="txPoint"/>
 6     <aop:advisor advice-ref="txAdvice" pointcut-ref="txPoint"/>
 7 </aop:config>
 8 <tx:advice id="txAdvice" transaction-manager="transactionManager">
 9     <tx:attributes>
10         <tx:method name="*"/>
11         <tx:method name="get*" read-only="true"/>
12     </tx:attributes>
13 </tx:advice>

2 Spring中 XML+注解 配置事务

一般xml里面配置粗粒度的控制，然后使用注解

 1 <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
 2     <property name="dataSource" ref="pooledDataSource"/>
 3 </bean>
 4 <aop:config>
 5     <aop:pointcut expression="execution(* cn.yuanyu.crud.service..*(..))" id="txPoint"/>
 6     <aop:advisor advice-ref="txAdvice" pointcut-ref="txPoint"/>
 7 </aop:config>
 8 <tx:advice id="txAdvice" transaction-manager="transactionManager">
 9     <tx:attributes>
10         <tx:method name="*"/>
11         <tx:method name="get*" read-only="true"/>
12     </tx:attributes>
13 </tx:advice>
14 <!--
15 -->
16 <tx:annotation-driven transaction-manager="transactionManager"/>

3 Spring中 纯注解 配置事务

1 @Configuration //声明配置类
2 @MapperScan("cn.yuanyu.tx.mapper")
3 @EnableTransactionManagement // 开启事务注解，等同于配置文件<tx:annotation-driven/>
4 public class MybatisPlusConfiguration {

4 Spirng Boot 中无需做任何事情

~/org/springframework/boot/spring-boot-autoconfigure/2.3.0.RELEASE/spring-boot-autoconfigure-2.3.0.RELEASE.jar!/META-INF/spring.factories

1 # Auto Configure
2 org.springframework.boot.autoconfigure.transaction.TransactionAutoConfiguration,\
 1 /**
 2  * Auto-configuration for Spring transaction.
 3  */
 4 @Configuration(proxyBeanMethods = false)
 5 @ConditionalOnClass(PlatformTransactionManager.class)
 6 @AutoConfigureAfter({JtaAutoConfiguration.class, HibernateJpaAutoConfiguration.class, DataSourceTransactionManagerAutoConfiguration.class, Neo4jDataAutoConfiguration.class})
 7 @EnableConfigurationProperties(TransactionProperties.class)
 8 public class TransactionAutoConfiguration {
 9     //...
10     @Configuration(proxyBeanMethods = false)
11     @ConditionalOnBean(TransactionManager.class)
12     @ConditionalOnMissingBean(AbstractTransactionManagementConfiguration.class)
13     public static class EnableTransactionManagementConfiguration {
14         @Configuration(proxyBeanMethods = false)
15         @EnableTransactionManagement(proxyTargetClass = false) //这里其实以及加了
16         @ConditionalOnProperty(prefix = "spring.aop", name = "proxy-target-class", havingValue = "false", matchIfMissing = false)
17         public static class JdkDynamicAutoProxyConfiguration {}
18         @Configuration(proxyBeanMethods = false)
19         @EnableTransactionManagement(proxyTargetClass = true)  //这里其实以及加了
20         @ConditionalOnProperty(prefix = "spring.aop", name = "proxy-target-class", havingValue = "true", matchIfMissing = true)
21         public static class CglibAutoProxyConfiguration {}
22     }
23 }

同理不需要加 @EnableAspectJAutoProxy 来开启aop

 1 @Configuration(proxyBeanMethods = false)
 2 @ConditionalOnProperty(prefix = "spring.aop", name = "auto", havingValue = "true", matchIfMissing = true)
 3 public class AopAutoConfiguration {
 4     @Configuration(proxyBeanMethods = false)
 5     @ConditionalOnClass(Advice.class)
 6     static class AspectJAutoProxyingConfiguration {
 7         @Configuration(proxyBeanMethods = false)
 8         @EnableAspectJAutoProxy(proxyTargetClass = false)
 9         @ConditionalOnProperty(prefix = "spring.aop", name = "proxy-target-class", havingValue = "false", matchIfMissing = false)
10         static class JdkDynamicAutoProxyConfiguration {}
11         @Configuration(proxyBeanMethods = false)
12         @EnableAspectJAutoProxy(proxyTargetClass = true)
13         @ConditionalOnProperty(prefix = "spring.aop", name = "proxy-target-class", havingValue = "true", matchIfMissing = true)
14         static class CglibAutoProxyConfiguration {}
15     }
16 }

转载：https://blog.csdn.net/qq_40794973/article/details/106597952

posted @ 2021-03-14 14:49  迷走神经  阅读(85)  评论(0)  编辑  收藏  举报