spring相关注解

@Configuration
是一个FullConfigBeanDefinition
会被BeanDefinitionRegistryPostProcessor解析

@ComponentScan
1、ConfigBeanDefintion包含@Component注解
2、ComponentScanAnnotationParser#parse方法扫描BeanDefintion(调用ClassPathBeanDefinitionScanner的doScan方法进行扫描)
3、步骤2扫描出来BeanDefinition的，判断是否是ConfigBeanDefinition，继续调用processConfigurationClass

@Import
1、普通类直接导入
2、如果类实现了ImportSelector，导入类的字符串数组
3、如果类继承了ImportBeanDefinitionRegistrar，方法中有BeanDefinitionRegistry对象，直接注册BeanDefinition

@EnableAspectJAutoProxy
1 @EnableAspectJAutoProxy类上包含注解@Import(AspectJAutoProxyRegistrar.class)
2 AspectJAutoProxyRegistrar实现了ImportBeanDefinitionRegistrar类，
当ConfigurationClassBeanDefinitionRegistry#postProcessBeanDefinitionRegistry执行的时候，会调用ImportBeanDefinitionRegistrar#registerBeanDefinitions方法，会注册AnnotationAwareAspectJAutoProxyCreator的Bean定义，同时会设置proxy-target-class和expose-proxy属性。

@Aspect
1 BeanDefinitionPostProcessor#postProcessAfterInitlization，执行初始化后置处理
2 调用AbstractAutoProxyCreator的postProcessAfterInitlization
3 调用wrapIfNecessary，利用BeanFactoryAspectJAdvisorsBuilderAdapter解析@Aspect注解，实际上是拦截在的

@Pointcut 解析为AspectJExpressionPointcut
@Before 会解析为InstantiationModelAwarePointcutAdvisorImpl, advice为AspecJMethodBeforeAdvice
@After 会解析为InstantiationModelAwarePointcutAdvisorImpl, advice为AspectJAfterAdvice
@Around 会解析为InstantiationModelAwarePointcutAdvisorImpl, advice为AspectAroundAdvice
@AfterReturn 会解析为InstantiationModelAwarePointcutAdvisorImpl, advice为AspectJAfterReturningAdvice
@AfterThrowing 会解析为InstantiationModelAwarePointcutAdvisorImpl, advice为AspectJAfterThrowingAdvice

@PropertySource
1、通过PropertiesLoaderUtils#loadProperties把文件加载到Properties对象中
2、把Properties对象封装为PropertySource对象
3、把PropertySource对象添加到environment环境变量中

@ImportResource
利用XmlBeanDefintionReader解析BeanDefinition

@EnableTransactionManagemen
@EnableTransactionManagement类上包含了注解@Import(TransactionManagementConfigurationSelector.class)
TransactionManagementConfigurationSelector类导入了AutoProxyRegistrar和ProxyTransactionManagementConfiguration
AutoProxyRegistrar注册了InfrastructureAdvisorAutoProxyCreator的BeanDefinition

ProxyTransactionManagementConfiguration注册了
BeanFactoryTransactionAttributeSourceAdvisor
TransactionInterceptor
TransactionAttributeSource(AnnotationTransactionAttributeSource)