1、本次使用springboot框架分析事务源码
2、打开spring-boot-autoconfigure查看spring.factories发现关于事务的自动配置包含：DataSourceTransactionManagerAutoConfiguration、TransactionAutoConfiguration
3、查看 TransactionAutoConfiguration源码发现包含注解@EnableTransactionManagement
@Configuration(proxyBeanMethods = false)
@ConditionalOnClass(PlatformTransactionManager.class)
@AutoConfigureAfter({ JtaAutoConfiguration.class, HibernateJpaAutoConfiguration.class,
DataSourceTransactionManagerAutoConfiguration.class, Neo4jDataAutoConfiguration.class })
@EnableConfigurationProperties(TransactionProperties.class)
public class TransactionAutoConfiguration {
...
@Configuration(proxyBeanMethods = false)
@ConditionalOnBean(TransactionManager.class)
@ConditionalOnMissingBean(AbstractTransactionManagementConfiguration.class)
public static class EnableTransactionManagementConfiguration {
@Configuration(proxyBeanMethods = false)
@EnableTransactionManagement(proxyTargetClass = false)
@ConditionalOnProperty(prefix = "spring.aop", name = "proxy-target-class", havingValue = "false",
matchIfMissing = false)
public static class JdkDynamicAutoProxyConfiguration {
}
@Configuration(proxyBeanMethods = false)
@EnableTransactionManagement(proxyTargetClass = true)
@ConditionalOnProperty(prefix = "spring.aop", name = "proxy-target-class", havingValue = "true",
matchIfMissing = true)
public static class CglibAutoProxyConfiguration {
}
}
}
4、查看@EnableTransactionManagement源码，发现TransactionManagementConfigurationSelector（springboot查看某一功能的具体过程，先查看@Enable...开头的源码）
@Target({ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
@Documented
@Import({TransactionManagementConfigurationSelector.class})
public @interface EnableTransactionManagement {
boolean proxyTargetClass() default false;
AdviceMode mode() default AdviceMode.PROXY;
int order() default 2147483647;
}
5、查看TransactionManagementConfigurationSelector源码，发现其最终实现了ImportSelector（主要是通过selectImports导入class实现选择行bean注入）
public class TransactionManagementConfigurationSelector extends AdviceModeImportSelector<EnableTransactionManagement> {protected String[] selectImports(AdviceMode adviceMode) {
switch(adviceMode) {
case PROXY:
return new String[]{AutoProxyRegistrar.class.getName(), ProxyTransactionManagementConfiguration.class.getName()};
case ASPECTJ:
return new String[]{this.determineTransactionAspectClass()};
default:
return null;
}
}
...
}
6、继续查看AutoProxyRegistrar和ProxyTransactionManagementConfiguration的源码
查看AutoProxyRegistrar的registerBeanDefinitions方法，发现通过AopConfigUtils的registerAutoProxyCreatorIfNecessary方法，最终注册到父容器中的内容为
registry.registerBeanDefinition(internalAutoProxyCreator,InfrastructureAdvisorAutoProxyCreator)
标签：事务,false,springboot,查看,EnableTransactionManagement,class,源码,public From： https://www.cnblogs.com/yulongzhang/p/16928327.html