Spring Ԫ

#Spring ԪϢ

• Spring Bean ԪϢ - BeanDefinition
• Spring Bean ԪϢ - PropertyValues
• Spring ԪϢ
• Spring ⲿԪϢ - PropertySource
• Spring Profile ԪϢ - @Profile

#Spring Bean ԪϢ

Bean ԪϢ - BeanDefinition

• GenericBeanDefinitionͨ BeanDefinition
• RootBeanDefinition Parent BeanDefinition ߺϲ BeanDefinition
• AnnotatedBeanDefinitionעע BeanDefinition

#Spring Bean ԪϢ

• Bean ԪϢ - PropertyValues
  • ޸ʵ - MutablePropertyValues
  • ԪسԱ - PropertyValue
• Bean Ĵ洢 - AttributeAccessor
• Bean ԪϢԪ - BeanMetadataElement

#Spring ԪϢ

Spring XML ԪϢ - beans Ԫ

beans Ԫ	Ĭֵ	ʹó
profile	nullգ	Spring Profiles ֵ
default-lazy-init	default	outter beans default-lazy-init Դʱ̳иֵΪfalse
default-merge	default	outter beans default-merge Դʱ̳иֵΪfalse
default-autowire	default	outter beans default-autowire Դʱ̳иֵΪno
default-autowire-candidates	nullգ	Ĭ Spring Beans pattern
default-init-method	nullգ	Ĭ Spring Beans Զʼ
default-destroy-method	nullգ	Ĭ Spring Beans Զٷ

Spring XML ԪϢ - Ӧ

XML Ԫ	ʹó
<context:annotation-config />	Spring ע
<context:component-scan />	Spring @Component ԼԶעɨ
<context:load-time-weaver />	Spring LoadTimeWeaver
<context:mbean-export />	¶ Spring Beans Ϊ JMX Beans
<context:mbean-server />	ǰƽ̨Ϊ MBeanServer
<context:property-placeholder />	ⲿԴΪ Spring
<context:property-override />	ⲿԴ Spring

# XML ļװ Spring Bean ԪϢ

ײʵ - XmlBeanDefinitionReader

XML Ԫ	ʹó
<beans:beans />	XML ԴµĶ Spring Beans
<beans:bean />	Spring Bean 壨BeanDefinition
<beans:alias />	Ϊ Spring Bean 壨BeanDefinitionӳ
<beans:import />	ⲿ Spring XML Դ

# Properties ļװ Spring Bean ԪϢ

ײʵ - PropertiesBeanDefinitionReader

Properties	ʹó
class	Bean ȫ޶
abstract	ǷΪ BeanDefinition
parent	ָ parent BeanDefinition
lazy-init	ǷΪӳٳʼ
ref	Bean
scope	Bean scope
${n}	n ʾ n+1

# Java עװ Spring Bean ԪϢ

Spring ģʽע

Spring ע	˵	ʼ汾
@Repository	ݲִģʽע	2.0
@Component	ͨģʽע	2.5
@Service	ģʽע	2.5
@Controller	Web ģʽע	2.5
@Configuration	ģʽע	3.0

Spring Bean ע

Spring ע	˵	ʼ汾
@Bean	滻 XML Ԫ <bean>	3.0
@DependsOn	XML <bean depends-on="..."/>	3.0
@Lazy	XML `<bean lazy-init="true	falses" />`
@Primary	滻 XML Ԫ `<bean primary="true	false" />`
@Role	滻 XML Ԫ <bean role="..." />	3.1
@Lookup	XML <bean lookup-method="...">	4.1

Spring Bean עע

Spring ע	˵	ʼ汾
@Autowired	Bean ע룬ֶ֧ҷʽ	2.5
@Qualifier	ϸȵ @Autowired	2.5

Java ע	˵	ʼ汾
@Resource	@Autowired	2.5
@Inject	@Autowired	2.5

Spring Bean װע

Spring ע	˵	ʼ汾
@Profile	ûװ	3.1
@Conditional	װ	4.0

Spring Bean ڻصע

Spring ע	˵	ʼ汾
@PostConstruct	滻 XML Ԫ <bean init-method="..."></bean> InitializingBean	2.5
@PreDestroy	滻 XML Ԫ <bean destroy-method="..."></bean> DisposableBean	2.5

Spring BeanDefinition ע

Spring ע	˵	ʼ汾
XML Դ	XmlBeanDefinitionReader	1.0
Properties Դ	PropertiesBeanDefinitionReader	1.0
Java ע	AnnotatedBeanDefinitionReader	3.0

#Spring Bean ԪϢײʵ

#Spring XML Դ BeanDefinition ע

API - XmlBeanDefinitionReader

• Դ - Resource
• ײ - BeanDefinitionDocumentReader
  • XML - Java DOM Level 3 API
  • BeanDefinition - BeanDefinitionParserDelegate
  • BeanDefinition ע - BeanDefinitionRegistry

#Spring Properties Դ BeanDefinition ע

API - PropertiesBeanDefinitionReader

• Դ
  • ֽ - Resource
  • ַ - EncodedResouce
• ײ
  • 洢 - java.util.Properties
  • BeanDefinition - API ڲʵ
  • BeanDefinition ע - BeanDefinitionRegistry

#Spring Java ע BeanDefinition ע

API - AnnotatedBeanDefinitionReader

• Դ
  • • java.lang.Class
• ײ
  • • ConditionEvaluator
  • Bean Χ - ScopeMetadataResolver
  • BeanDefinition - ڲ API ʵ
  • BeanDefinition - AnnotationConfigUtils.processCommonDefinitionAnnotations
  • BeanDefinition ע - BeanDefinitionRegistry

# XML ļװ Spring IoC ԪϢ

Spring IoC XML

ռ	ģ	Schema Դ URL
beans	spring-beans	https://www.springframework.org/schema/beans/spring-beans.xsd
context	spring-context	https://www.springframework.org/schema/context/spring-context.xsd
aop	spring-aop	https://www.springframework.org/schema/aop/spring-aop.xsd
tx	spring-tx	https://www.springframework.org/schema/tx/spring-tx.xsd
util	spring-beans	beans https://www.springframework.org/schema/util/spring-util.xsd
tool	spring-beans	https://www.springframework.org/schema/tool/spring-tool.xsd

# Java עװ Spring IoC ԪϢ

Spring IoC װע

Spring ע	˵	ʼ汾
@ImportResource	滻 XML Ԫ <import>	3.0
@Import	Configuration Class	3.0
@ComponentScan	ɨָ package ±ע Spring ģʽע	3.1

Spring IoC ע

Spring ע	˵	ʼ汾
@PropertySource	Գ PropertySource ע	3.1
@PropertySources	@PropertySource ע	4.0

# Extensible XML authoring չ SpringXML Ԫ

Spring XML չ

• д XML Schema ļ XML ṹ
• Զ NamespaceHandler ʵ֣ռ
• Զ BeanDefinitionParser ʵ֣XML Ԫ BeanDefinition
• ע XML չռ XML Schema ӳ

#Extensible XML authoring չԭ

#ʱ

• AbstractApplicationContext#obtainFreshBeanFactory
  • AbstractRefreshableApplicationContext#refreshBeanFactory
    • AbstractXmlApplicationContext#loadBeanDefinitions
      • ...
        • XmlBeanDefinitionReader#doLoadBeanDefinitions
          • ...
            • BeanDefinitionParserDelegate#parseCustomElement

#

BeanDefinitionParserDelegate#parseCustomElement(org.w3c.dom.Element, BeanDefinition)

• ȡ namespace
• ͨ namespace NamespaceHandler
• ParserContext
• Ԫأȡ BeanDefinintion

# Properties ļװⲿ

ע

• @org.springframework.context.annotation.PropertySource
• @org.springframework.context.annotation.PropertySources

API

• org.springframework.core.env.PropertySource
• org.springframework.core.env.PropertySources

# YAML ļװⲿ

API

• org.springframework.beans.factory.config.YamlProcessor
  • org.springframework.beans.factory.config.YamlMapFactoryBean
  • org.springframework.beans.factory.config.YamlPropertiesFactoryBean

#

Spring Ƚ XML Schema Щ

ռ	ģ	Schema Դ URL
beans	spring-beans	https://www.springframework.org/schema/beans/spring-beans.xsd
context	spring-context	https://www.springframework.org/schema/context/spring-context.xsd
aop	spring-aop	https://www.springframework.org/schema/aop/spring-aop.xsd
tx	spring-tx	https://www.springframework.org/schema/tx/spring-tx.xsd
util	spring-beans	beans https://www.springframework.org/schema/util/spring-util.xsd
tool	spring-beans	https://www.springframework.org/schema/tool/spring-tool.xsd

Spring ԪϢЩ

• Bean ԪϢͨý飨 XMLProeprties ȣ BeanDefinition
• IoC ԪϢͨý飨 XMLProeprties ȣ IoC ΪעAOP
• ⲿãͨԴ ProeprtiesYAML ȣ PropertySource
• Spring Profileͨⲿãṩ֧

Extensible XML authoring ȱ

• ߸ӶȣԱҪϤ XML Schemaspring.handlersspring.schemas Լ Spring API
• ǶԪֽ֧ͨҪʹ÷ݹǶ׽ķʽǶףӣԪ
• XML ܽϲSpring XML DOM Level 3 API ʵ֣ API ⣬Ȼܽϲ
• XML ֲԲܺͱԵ XML ܣ JAXB

#ο

• Spring ٷĵ֮ Core Technologies(opens new window)
• С署 Spring ı˼롷(opens new window)

ο

https://www.w3cschool.cn/wkspring https://www.runoob.com/w3cnote/basic-knowledge-summary-of-spring.html http://codepub.cn/2015/06/21/Basic-knowledge-summary-of-Spring https://dunwu.github.io/spring-tutorial https://mszlu.com/java/spring http://c.biancheng.net/spring/aop-module.html