@Transactional標識類或方法，使方法被執行時使用事務方式執行，這里只討論PROXY方法增強方法。使用@EnableTransactionManagement，默認model=AdviceMode.PROXY，通過@Import(TransactionManagementConfigurationSelector.class)來判斷在加載時注冊PROXY不是ASPECTJ相關類。PROXY相關類有AutoProxyRegistrar和ProxyTransactionManagementConfiguration。AutoProxyRegistrar作用是通過EnableTransactionManagement.proxyTargetClass值判斷使用CGLIB或是Java?interface-based?proxies。使用Java?interface-based?proxies時AnnotationAwareAspectJAutoProxyCreator，AnnotationAwareAspectJAutoProxyCreator是一個BeanPostProcessor實現類。使用CGLIB也是注冊AnnotationAwareAspectJAutoProxyCreator并且將proxyTargetClass=true，如下AopConfigUtils.forceAutoProxyCreatorToUseClassProxying()

AnnotationAwareAspectJAutoProxyCreator.wrapIfNecessary()

AnnotationAwareAspectJAutoProxyCreator是一個BeanPostProcessor實現類，它的相應方法會在容器管理每個對象實例化不同階段會執行。wrapIfNecessary()方法在postProcessAfterInitialization()方法調用，主要是判斷實例化對象是否容器所有Advisor所要作用對象，如@Transactional標識的方法或類的對象匹配BeanFactoryTransactionAttributeSourceAdvisor。 AnnotationTransactionAttributeSource.determineTransactionAttribute() 判斷傳入的方法是否含@Transactional標識，返回TransactionAttribute 下面是AnnotationAwareAspectJAutoProxyCreator(AbstractAutoProxyCreator).wrapIfNecessary()的stack Thread?[main]?(Suspended?(breakpoint?at?line?348?in?AbstractAutoProxyCreator))???? owns:?ConcurrentHashMap<K,V>??(id=2343)???? owns:?Object??(id=2107)???? AnnotationAwareAspectJAutoProxyCreator(AbstractAutoProxyCreator).wrapIfNecessary(Object,?String,?Object)?line:?348???? AnnotationAwareAspectJAutoProxyCreator(AbstractAutoProxyCreator).postProcessAfterInitialization(Object,?String)?line:?298???? DefaultListableBeanFactory(AbstractAutowireCapableBeanFactory).applyBeanPostProcessorsAfterInitialization(Object,?String)?line:?435???? DefaultListableBeanFactory(AbstractAutowireCapableBeanFactory).initializeBean(String,?Object,?RootBeanDefinition)?line:?1721???? DefaultListableBeanFactory(AbstractAutowireCapableBeanFactory).doCreateBean(String,?RootBeanDefinition,?Object[])?line:?581???? DefaultListableBeanFactory(AbstractAutowireCapableBeanFactory).createBean(String,?RootBeanDefinition,?Object[])?line:?498???? DefaultListableBeanFactory(AbstractBeanFactory).lambda$doGetBean$0(String,?RootBeanDefinition,?Object[])?line:?305???? 48361312.getObject()?line:?not?available???? DefaultListableBeanFactory(DefaultSingletonBeanRegistry).getSingleton(String,?ObjectFactory<?>)?line:?233???? DefaultListableBeanFactory(AbstractBeanFactory).doGetBean(String,?Class<T>,?Object[],?boolean)?line:?303???? DefaultListableBeanFactory(AbstractBeanFactory).getBean(String,?Class<T>)?line:?198???? CommonAnnotationBeanPostProcessor.autowireResource(BeanFactory,?CommonAnnotationBeanPostProcessor$LookupElement,?String)?line:?512???? CommonAnnotationBeanPostProcessor.getResource(CommonAnnotationBeanPostProcessor$LookupElement,?String)?line:?483???? CommonAnnotationBeanPostProcessor$ResourceElement.getResourceToInject(Object,?String)?line:?617???? CommonAnnotationBeanPostProcessor$ResourceElement(InjectionMetadata$InjectedElement).inject(Object,?String,?PropertyValues)?line:?172???? InjectionMetadata.inject(Object,?String,?PropertyValues)?line:?89???? CommonAnnotationBeanPostProcessor.postProcessPropertyValues(PropertyValues,?PropertyDescriptor[],?Object,?String)?line:?317???? DefaultListableBeanFactory(AbstractAutowireCapableBeanFactory).populateBean(String,?RootBeanDefinition,?BeanWrapper)?line:?1353???? DefaultListableBeanFactory(AbstractAutowireCapableBeanFactory).doCreateBean(String,?RootBeanDefinition,?Object[])?line:?579???? DefaultListableBeanFactory(AbstractAutowireCapableBeanFactory).createBean(String,?RootBeanDefinition,?Object[])?line:?498???? DefaultListableBeanFactory(AbstractBeanFactory).lambda$doGetBean$0(String,?RootBeanDefinition,?Object[])?line:?305???? 48361312.getObject()?line:?not?available???? DefaultListableBeanFactory(DefaultSingletonBeanRegistry).getSingleton(String,?ObjectFactory<?>)?line:?233???? DefaultListableBeanFactory(AbstractBeanFactory).doGetBean(String,?Class<T>,?Object[],?boolean)?line:?303???? DefaultListableBeanFactory(AbstractBeanFactory).getBean(String,?Class<T>)?line:?198???? CommonAnnotationBeanPostProcessor.autowireResource(BeanFactory,?CommonAnnotationBeanPostProcessor$LookupElement,?String)?line:?512???? CommonAnnotationBeanPostProcessor.getResource(CommonAnnotationBeanPostProcessor$LookupElement,?String)?line:?483???? CommonAnnotationBeanPostProcessor$ResourceElement.getResourceToInject(Object,?String)?line:?617???? CommonAnnotationBeanPostProcessor$ResourceElement(InjectionMetadata$InjectedElement).inject(Object,?String,?PropertyValues)?line:?172???? InjectionMetadata.inject(Object,?String,?PropertyValues)?line:?89???? CommonAnnotationBeanPostProcessor.postProcessPropertyValues(PropertyValues,?PropertyDescriptor[],?Object,?String)?line:?317???? DefaultListableBeanFactory(AbstractAutowireCapableBeanFactory).populateBean(String,?RootBeanDefinition,?BeanWrapper)?line:?1353???? DefaultListableBeanFactory(AbstractAutowireCapableBeanFactory).doCreateBean(String,?RootBeanDefinition,?Object[])?line:?579???? DefaultListableBeanFactory(AbstractAutowireCapableBeanFactory).createBean(String,?RootBeanDefinition,?Object[])?line:?498???? DefaultListableBeanFactory(AbstractBeanFactory).lambda$doGetBean$0(String,?RootBeanDefinition,?Object[])?line:?305???? 48361312.getObject()?line:?not?available???? DefaultListableBeanFactory(DefaultSingletonBeanRegistry).getSingleton(String,?ObjectFactory<?>)?line:?233???? DefaultListableBeanFactory(AbstractBeanFactory).doGetBean(String,?Class<T>,?Object[],?boolean)?line:?303???? DefaultListableBeanFactory(AbstractBeanFactory).getBean(String)?line:?193???? DefaultListableBeanFactory.preInstantiateSingletons()?line:?747???? AnnotationConfigApplicationContext(AbstractApplicationContext).finishBeanFactoryInitialization(ConfigurableListableBeanFactory)?line:?861???? AnnotationConfigApplicationContext(AbstractApplicationContext).refresh()?line:?542???? SpringApplication.refresh(ApplicationContext)?line:?750???? SpringApplication.refreshContext(ConfigurableApplicationContext)?line:?386???? SpringApplication.run(String...)?line:?327???? SpringApplication.run(Class<?>[],?String[])?line:?1245???? SpringApplication.run(Class<?>,?String...)?line:?1233???? Application.main(String[])?line:?56???? 如果對象是Advisor所要作用對象，則調用createProxy()生成proxy對象封閉目標對象，增強目標對象。如下面stack Thread?[main]?(Suspended?(breakpoint?at?line?441?in?AbstractAutoProxyCreator))???? owns:?ConcurrentHashMap<K,V>??(id=2343)???? owns:?Object??(id=2107)???? AnnotationAwareAspectJAutoProxyCreator(AbstractAutoProxyCreator).createProxy(Class<?>,?String,?Object[],?TargetSource)?line:?441???? AnnotationAwareAspectJAutoProxyCreator(AbstractAutoProxyCreator).wrapIfNecessary(Object,?String,?Object)?line:?349???? AnnotationAwareAspectJAutoProxyCreator(AbstractAutoProxyCreator).postProcessAfterInitialization(Object,?String)?line:?298???? DefaultListableBeanFactory(AbstractAutowireCapableBeanFactory).applyBeanPostProcessorsAfterInitialization(Object,?String)?line:?435???? DefaultListableBeanFactory(AbstractAutowireCapableBeanFactory).initializeBean(String,?Object,?RootBeanDefinition)?line:?1721???? DefaultListableBeanFactory(AbstractAutowireCapableBeanFactory).doCreateBean(String,?RootBeanDefinition,?Object[])?line:?581???? DefaultListableBeanFactory(AbstractAutowireCapableBeanFactory).createBean(String,?RootBeanDefinition,?Object[])?line:?498???? DefaultListableBeanFactory(AbstractBeanFactory).lambda$doGetBean$0(String,?RootBeanDefinition,?Object[])?line:?305???? 48361312.getObject()?line:?not?available???? DefaultListableBeanFactory(DefaultSingletonBeanRegistry).getSingleton(String,?ObjectFactory<?>)?line:?233???? DefaultListableBeanFactory(AbstractBeanFactory).doGetBean(String,?Class<T>,?Object[],?boolean)?line:?303???? DefaultListableBeanFactory(AbstractBeanFactory).getBean(String,?Class<T>)?line:?198???? CommonAnnotationBeanPostProcessor.autowireResource(BeanFactory,?CommonAnnotationBeanPostProcessor$LookupElement,?String)?line:?512???? CommonAnnotationBeanPostProcessor.getResource(CommonAnnotationBeanPostProcessor$LookupElement,?String)?line:?483???? CommonAnnotationBeanPostProcessor$ResourceElement.getResourceToInject(Object,?String)?line:?617???? CommonAnnotationBeanPostProcessor$ResourceElement(InjectionMetadata$InjectedElement).inject(Object,?String,?PropertyValues)?line:?172???? InjectionMetadata.inject(Object,?String,?PropertyValues)?line:?89???? CommonAnnotationBeanPostProcessor.postProcessPropertyValues(PropertyValues,?PropertyDescriptor[],?Object,?String)?line:?317???? DefaultListableBeanFactory(AbstractAutowireCapableBeanFactory).populateBean(String,?RootBeanDefinition,?BeanWrapper)?line:?1353???? DefaultListableBeanFactory(AbstractAutowireCapableBeanFactory).doCreateBean(String,?RootBeanDefinition,?Object[])?line:?579???? DefaultListableBeanFactory(AbstractAutowireCapableBeanFactory).createBean(String,?RootBeanDefinition,?Object[])?line:?498???? DefaultListableBeanFactory(AbstractBeanFactory).lambda$doGetBean$0(String,?RootBeanDefinition,?Object[])?line:?305???? 48361312.getObject()?line:?not?available???? DefaultListableBeanFactory(DefaultSingletonBeanRegistry).getSingleton(String,?ObjectFactory<?>)?line:?233???? DefaultListableBeanFactory(AbstractBeanFactory).doGetBean(String,?Class<T>,?Object[],?boolean)?line:?303???? DefaultListableBeanFactory(AbstractBeanFactory).getBean(String,?Class<T>)?line:?198???? CommonAnnotationBeanPostProcessor.autowireResource(BeanFactory,?CommonAnnotationBeanPostProcessor$LookupElement,?String)?line:?512???? CommonAnnotationBeanPostProcessor.getResource(CommonAnnotationBeanPostProcessor$LookupElement,?String)?line:?483???? CommonAnnotationBeanPostProcessor$ResourceElement.getResourceToInject(Object,?String)?line:?617???? CommonAnnotationBeanPostProcessor$ResourceElement(InjectionMetadata$InjectedElement).inject(Object,?String,?PropertyValues)?line:?172???? InjectionMetadata.inject(Object,?String,?PropertyValues)?line:?89???? CommonAnnotationBeanPostProcessor.postProcessPropertyValues(PropertyValues,?PropertyDescriptor[],?Object,?String)?line:?317???? DefaultListableBeanFactory(AbstractAutowireCapableBeanFactory).populateBean(String,?RootBeanDefinition,?BeanWrapper)?line:?1353???? DefaultListableBeanFactory(AbstractAutowireCapableBeanFactory).doCreateBean(String,?RootBeanDefinition,?Object[])?line:?579???? DefaultListableBeanFactory(AbstractAutowireCapableBeanFactory).createBean(String,?RootBeanDefinition,?Object[])?line:?498???? DefaultListableBeanFactory(AbstractBeanFactory).lambda$doGetBean$0(String,?RootBeanDefinition,?Object[])?line:?305???? 48361312.getObject()?line:?not?available???? DefaultListableBeanFactory(DefaultSingletonBeanRegistry).getSingleton(String,?ObjectFactory<?>)?line:?233???? DefaultListableBeanFactory(AbstractBeanFactory).doGetBean(String,?Class<T>,?Object[],?boolean)?line:?303???? DefaultListableBeanFactory(AbstractBeanFactory).getBean(String)?line:?193???? DefaultListableBeanFactory.preInstantiateSingletons()?line:?747???? AnnotationConfigApplicationContext(AbstractApplicationContext).finishBeanFactoryInitialization(ConfigurableListableBeanFactory)?line:?861???? AnnotationConfigApplicationContext(AbstractApplicationContext).refresh()?line:?542???? SpringApplication.refresh(ApplicationContext)?line:?750???? SpringApplication.refreshContext(ConfigurableApplicationContext)?line:?386???? SpringApplication.run(String...)?line:?327???? SpringApplication.run(Class<?>[],?String[])?line:?1245???? SpringApplication.run(Class<?>,?String...)?line:?1233???? Application.main(String[])?line:?56????

AbstractAutoProxyCreator.createProxy()

DefaultAopProxyFactory.createAopProxy() @Transactional標識增強對象是類所以創建proxy對象是ObjenesisCglibAopProxy

轉載于:https://www.cnblogs.com/birdstudio/p/7639984.html

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