springboot源碼解析autoconfigure之TransactionAutoConfiguration

說在前面

本次開始spring-boot-autoconfigure源碼解析之TransactionAutoConfiguration

 

源碼解析

@Configuration
@ConditionalOnClass(PlatformTransactionManager.class)
@AutoConfigureAfter({ JtaAutoConfiguration.class, HibernateJpaAutoConfiguration.class,
      DataSourceTransactionManagerAutoConfiguration.class,
      Neo4jDataAutoConfiguration.class })
@EnableConfigurationProperties(TransactionProperties.class)
public class TransactionAutoConfiguration {

   @Bean
   @ConditionalOnMissingBean
   public TransactionManagerCustomizers platformTransactionManagerCustomizers(
         ObjectProvider<List<PlatformTransactionManagerCustomizer<?>>> customizers) {
      return new TransactionManagerCustomizers(customizers.getIfAvailable());
   }

   @Configuration
   @ConditionalOnSingleCandidate(PlatformTransactionManager.class)
   public static class TransactionTemplateConfiguration {

      private final PlatformTransactionManager transactionManager;
      public TransactionTemplateConfiguration(
            PlatformTransactionManager transactionManager) {
         this.transactionManager = transactionManager;
      }

//    初始化TransactionTemplate
      @Bean
      @ConditionalOnMissingBean
      public TransactionTemplate transactionTemplate() {
         return new TransactionTemplate(this.transactionManager);
      }

   }

   @Configuration
   @ConditionalOnBean(PlatformTransactionManager.class)
   @ConditionalOnMissingBean(AbstractTransactionManagementConfiguration.class)
   public static class EnableTransactionManagementConfiguration {

      @Configuration
//    開啓事務配置，spring.aop.proxy-target-class=false 採用jdk動態代理
      @EnableTransactionManagement(proxyTargetClass = false)
      @ConditionalOnProperty(prefix = "spring.aop", name = "proxy-target-class", havingValue = "false", matchIfMissing = false)
      public static class JdkDynamicAutoProxyConfiguration {

      }

      @Configuration
//    開啓事務配置，spring.aop.proxy-target-class=true 採用cglib動態代理
      @EnableTransactionManagement(proxyTargetClass = true)
      @ConditionalOnProperty(prefix = "spring.aop", name = "proxy-target-class", havingValue = "true", matchIfMissing = true)
      public static class CglibAutoProxyConfiguration {

      }

   }

}

 

說在最後

本次僅表明我的觀點，僅供參考。