SpringBoot自动装配+bean加载+MVC

剩下其他核心方法

run方法入口

createBeanInstance

当前类型为RuntimeBeanReference，所以需要到容器里面先取值

@EnableAutoConfiguration

// Eagerly cache singletons to be able to resolve circular references// even when triggered by lifecycle interfaces like BeanFactoryAware.boolean earlySingletonExposure = (mbd.isSingleton() && this.allowCircularReferences &&isSingletonCurrentlyInCreation(beanName));if (earlySingletonExposure) {if (logger.isTraceEnabled()) {logger.trace(\"Eagerly caching bean '\" + beanName +\"' to allow for resolving potential circular references\

Reamrk此处填充bean的部分属性是因为beanFacotry和applicationContex是两条线

obtainFreshBeanFactory

ReactiveWebServerApplicationContext

resolveValueIfNecessary

最终解析方法parseBeanDefinitions

// Instantiate all remaining (non-lazy-init) singletons.beanFactory.preInstantiateSingletons();

核心读取方法doLoadBeanDefinitions

instantiateBean

赋值操作【判断值类型是否为 RuntimeBeanReference】resolvedName = String.valueOf(doEvaluate(ref.getBeanName()));bean = this.beanFactory.getBean(resolvedName);

循环依赖相关

@Import(AutoConfigurationImportSelector.class)

applyPropertyValues

getBean--> doGetBean

ServletWebServerApplicationContext

resolveReference

AbstractApplicationContext

BeanClassLoaderAware

最终解析完成后统一放入BeanDefinition

二级缓存  earlySingletonObjects

设置Bean工厂的属性值prepareBeanFactory

构造器  new SpringApplication(primarySources)

取lambda表达式获取半成品对象存入二级缓存，并且移除三级缓存

未完待续

读取XML文件流InputStream inputStream = encodedResource.getResource().getInputStream()

run

@SpringBootApplication

AnnotationConfigWebApplicationContext

spring自动装配入口

loadSpringFactories

GroovyWebApplicationContext

refresh

进行实例化方法     preInstantiateSingletons

三级缓存 缓存添加lambda表达式                          二级缓存移除bean  singletonFactories

BeanFactoryAware

BeanNameAware

createBean--> doCreateBean

finishBeanFactoryInitialization

@AutoConfigurationPackage

初始化bean（填充spring其他基本beanspan style=\"font-size: inherit;\

XML加载AbstractXmlApplicationContext

META-INF/spring.factories

一级缓存singletonObjects

创建对象ctor.newInstance(argsWithDefaultValues);

加载系统bean 自动装配  this.bootstrapRegistryInitializers = new ArrayList<>(getSpringFactoriesInstances(BootstrapRegistryInitializer.class));

@Import(AutoConfigurationPackages.Registrar.class)

XmlWebApplicationContext

getSpringFactoriesInstances

获取构造器 constructorToUse = clazz.getDeclaredConstructor();

refreshContext