spring xml解析自定义元素和默认元素类图

BeanDefinitionReader

调用

ApplicationContext

选择xml解析方式:AbstractBeanDefinitionReaderloadBeanDefinitions(): 遍历所有xml

ListableBeanFactory

ConfigurableApplicationContext(refresh())

ResourceLoader

BeanDefinitionParserDelegate(解析默认元素) 1.parseBeanDefinitionElement() 2.createBeanDefinition(): 通过反射创建对象保存到BeanDefinition

AbstractApplicationContext(obtainFreshBeanFactory())

FrameworkServlet(refresh())

BeanDefinitionDocumentReaderregisterBeanDefinitions()

ClassPathXmlApplicationContext

选择xml解析方式:AbstractXmlApplicationContext(loadBeanDefinitions())

NamespaceHandlerResolver

BeanFactory

XmlBeanDefinitionReader 1.doLoadBeanDefinitions(): Sax解析xml 2.registerBeanDefinitions()

BeanDefinitionParserDelegate(解析自定义元素) 1.parseCustomElement()

DefaultBeanDefinitionDocumentReader 1.doRegisterBeanDefinitions() 2.parseBeanDefinitions(): 获取dom根节点的所有子元素后遍历 3.(1) parseDefaultElement(): 解析默认元素信息 3.(2) parseCustomElement(): 解析自定义元素信息

AbstractRefreshableApplicationContext(refreshBeanFactory())