SpringBoot-AutoConfiguration

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invokeBeanFactoryPostProcessors方法实现SpringBoot自动装配

依据Bean的Scope放入不同的容器

process @PropertySource

Annotationn

this.deferredImportSelectorHandler.process()

process @ImportResource

把BD注册到beanDefinitionMap

....

public @interface ComponentScan {    String[] basePackages() default {};    Class<?>[] basePackageClasses() default {};    Class<? extends BeanNameGenerator> nameGenerator() default BeanNameGenerator.class;    Class<? extends ScopeMetadataResolver> scopeResolver() default AnnotationScopeMetadataResolver.class;    ScopedProxyMode scopedProxy() default ScopedProxyMode.DEFAULT;    String resourcePattern() default ClassPathScanningCandidateComponentProvider.DEFAULT_RESOURCE_PATTERN;    boolean useDefaultFilters() default true;    Filter[] includeFilters() default {};    Filter[] excludeFilters() default {};    boolean lazyInit() default false;}

SuperClass

RequestScope

BeanDefinitionReader

...

invokeBeanDefinitionRegistryPostProcessors

ConfigurationClassPostProcessor

registerListeners()

调用函数RefreshContext()进入IOC container

ConfigurationClassParser

public @interface ImportResource {    String[] locations() default {};    Class<? extends BeanDefinitionReader> reader() default BeanDefinitionReader.class;}

invokeBeanFactoryPostProcessors

SpringApplication

BeanPostProcessor: before()

instialize Bean: doGetBean()

initApplicationEventMulticaster()

每个configurationClass如何注册BD到beanFactory的？1. 注册configurationClass本身2.注册configurationClass所包含的@Bean method3.注册@ImportResource中的locations(本质是一些.class文件)4.调用configurationClass的@Import中的那些 ImportBeanDefinitionRegistrar实现的类的zhi'xingregisterBeanDefinitions方法来注册BD.

SessionScope

BeanFactory

完整Bean对象

configCandidates:在BeanDefinition中筛选出包含有@Configuration的BD，或者和父注解中包含有@Configuration的BD:WhatsappApplication将BD包装成ConfigurationClass candidate传入

Process superclass

process @ComponentScan

DataBase

finishBeanFactoryInitialization(beanFactory)

process @Bean methods

ConfigurationClassPostProcessor::postProcessBeanFactory

XML

public @interface PropertySource {    String name() default \"\"; //the name of this property source    String[] value();     boolean ignoreResourceNotFound() default false;    String encoding() default \"\";    Class<? extends PropertySourceFactory> factory() default PropertySourceFactory.class;}

创建并启动Tomcat Sever

RemoteServer

singletonObjects

ConfigurationClassPostProcessor1. 找到beanFactory的所有@Configuration，然后用ConfigurationClassEnhancer来增强2.添加BeanPostProcessor(new ImportAwareBeanPostProcessor(beanFactory))

把candidate(是一个ConfigurationClass)中之前保存过的 DeferredImportSelector进行处理

process Member classes for @Component class

读取@Bean 修饰的方法，然后将这些method添加到candidate(是一个ConfigurationClass)

Process default methods on interfaces

ConfigurationClassPostProcessor::postProcessBeanDefinitionRegistry该方法就是在即将执行postProcessBeanFactory的时候能加载更多的BeanDefinitionLiang: 每一个bfpp执行该方法时，都是处理特定种类的BD，这个类是用来处理@Configuration的BD

beanDefinitionMap

OnRefresh()

invokeInitMethods()

populateBean

IOC container

BeanPostProcessor: after()