spring

Spring Framework Source Code Analysis

说明

• spring版本: 4.3.0.RELEASE
• jdk版本: 1.8

包含的spring模块

• spring-aop
• spring-beans
• spring-context
• spring-core
• spring-expression
• spring-instrument

BeanFactory

• DefaultListableBeanFactory

IOC容器BeanFactory初始化过程

• Resource定位
• 加载BeanDefinition
• 注册BeanDefinition

ApplicationContext

• ClassPathXmlApplicationContext

过程

• XML -> Resource -> BeanDefinition -> BeanFactory

• 注册BeanDefinition: DefaultBeanDefinitionDocumentReader.parseBeanDefinitions()

• DefaultNamespaceHandlerResolver: Spring命名空间解析

context:annotation-config

• AnnotationConfigBeanDefinitionParser
• 注册 org.springframework.context.annotation.internalConfigurationAnnotationProcessor
• 注册 org.springframework.context.annotation.internalAutowiredAnnotationProcessor
• 注册 org.springframework.context.annotation.internalRequiredAnnotationProcessor
• 注册 org.springframework.context.annotation.internalCommonAnnotationProcessor
• 注册 org.springframework.context.event.internalEventListenerProcessor
• 注册 org.springframework.context.event.internalEventListenerFactory

context:component-scan

• ComponentScanBeanDefinitionParser

ioc注入

• AbstractAutowireCapableBeanFactory.doCreateBean()
• AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues()

xml的ioc注入

• 读取bean的autowire配置, DefaultBeanDefinitionDocumentReader.getAutowireMode(), byName/byType
• AbstractAutowireCapableBeanFactory.populateBean()
• byName - autowireByName()
• byType - autowireByType()

注解的ioc注入