@Override
public void refresh() throws BeansException, IllegalStateException {
 synchronized (this.startupShutdownMonitor) {
 // 準(zhǔn)備預(yù)處理：記錄容器的啟動(dòng)時(shí)間startupDate, 標(biāo)記容器為激活，初始化上下文環(huán)境如文件路徑信息，驗(yàn)證必填屬性是否填寫(xiě) 
 this.prepareRefresh();
 // **告訴子類(lèi)去刷新bean工廠，此方法解析配置文件并將bean信息存儲(chǔ)到beanDefinition中，注冊(cè)到BeanFactory（但是未被初始化，僅將信息寫(xiě)到了beanDefination的map中）**重點(diǎn)方法，下面的操作都基于這個(gè)beanFactory進(jìn)行的
 ConfigurableListableBeanFactory beanFactory = this.obtainFreshBeanFactory();
 // 設(shè)置beanFactory的基本屬性：類(lèi)加載器，添加多個(gè)beanPostProcesser
 this.prepareBeanFactory(beanFactory);
 try {
 // 空實(shí)現(xiàn)：允許子類(lèi)上下文中對(duì)beanFactory做后期處理
 this.postProcessBeanFactory(beanFactory);
 /**************************以上是BeanFactory的創(chuàng)建及預(yù)準(zhǔn)備工作 ****************/
 // 調(diào)用BeanFactoryPostProcessor各個(gè)實(shí)現(xiàn)類(lèi)的方法
 this.invokeBeanFactoryPostProcessors(beanFactory);
 // 注冊(cè) BeanPostProcessor 的實(shí)現(xiàn)類(lèi)，注意看和 BeanFactoryPostProcessor 的區(qū)別
 // 此接口兩個(gè)方法: postProcessBeforeInitialization 和 postProcessAfterInitialization
 // 兩個(gè)方法分別在 Bean 初始化之前和初始化之后得到執(zhí)行。注意，到這里 Bean 還沒(méi)初始化
 this.registerBeanPostProcessors(beanFactory);
 //初始化ApplicationContext的MessageSource組件(資源文件)，如國(guó)際化文件，消息解析，綁定等
 this.initMessageSource();
 //初始化ApplicationContext事件廣播器
 this.initApplicationEventMulticaster();
 // 初始化子類(lèi)特殊bean（鉤子方法）
 this.onRefresh();
 // 獲取所有的事件監(jiān)聽(tīng)器，并將監(jiān)聽(tīng)器注冊(cè)到事件廣播器
 this.registerListeners();
 //** 初始化所有singleton bean；**重點(diǎn)方法
 this.finishBeanFactoryInitialization(beanFactory);
 // 廣播事件：ApplicationContext初始化完成
 this.finishRefresh();
} catch (BeansException ex) {
	if (logger.isWarnEnabled()) {
	logger.warn("Exception encountered during context initialization - " + "cancelling refresh attempt: " + ex);
	}
		// 銷(xiāo)毀bean
		this.destroyBeans();
		// 重置 'active' 標(biāo)志.
		this.cancelRefresh(ex);
		throw ex;
			}
		}

//刷新前的預(yù)處理;
protected void prepareRefresh() {
 this.startupDate = System.currentTimeMillis();
 this.closed.set(false);
 this.active.set(true);
​
 if (logger.isInfoEnabled()) {
 logger.info("Refreshing " + this);
 }
 // 初始化一些屬性設(shè)置;子類(lèi)自定義個(gè)性化的屬性設(shè)置方法；
 initPropertySources(); 
 // 校驗(yàn)配置文件的屬性，合法性
 getEnvironment().validateRequiredProperties();
 //保存容器中的一些事件
 this.earlyApplicationEvents = new LinkedHashSet<ApplicationEvent>();
}

protected ConfigurableListableBeanFactory obtainFreshBeanFactory() {
 refreshBeanFactory(); //創(chuàng)建了一個(gè)this.beanFactory = new DefaultListableBeanFactory();設(shè)置了序列化的ID
 //返回剛才創(chuàng)建的DefaultListableBeanFactory
 ConfigurableListableBeanFactory beanFactory = getBeanFactory();
 if (logger.isDebugEnabled()) {
 logger.debug("Bean factory for " + getDisplayName() + ": " + beanFactory);
 }
 return beanFactory;
}

protected void prepareBeanFactory(ConfigurableListableBeanFactory beanFactory) {
 	// Tell the internal bean factory to use the context's class loader etc.
 //設(shè)置類(lèi)加載器
 	beanFactory.setBeanClassLoader(getClassLoader());
 //設(shè)置bean表達(dá)式解析器，詳解見(jiàn)下文
 	beanFactory.setBeanExpressionResolver(new StandardBeanExpressionResolver());
 	//資源編輯注冊(cè)器
 	beanFactory.addPropertyEditorRegistrar(new ResourceEditorRegistrar(this, getEnvironment()));

 	//添加一個(gè)BeanPostProcessor：ApplicationContextAwareProcessor，用于向?qū)崿F(xiàn)類(lèi)ApplitionContextAware中，調(diào)用setApplicationContext方法，并將ApplicationContext作為參數(shù)。
 	beanFactory.addBeanPostProcessor(new ApplicationContextAwareProcessor(this));
 
 	//添加忽略自動(dòng)裝配的接口
 	beanFactory.ignoreDependencyInterface(EnvironmentAware.class);
 	beanFactory.ignoreDependencyInterface(EmbeddedValueResolverAware.class);
 	beanFactory.ignoreDependencyInterface(ResourceLoaderAware.class);
 	beanFactory.ignoreDependencyInterface(ApplicationEventPublisherAware.class);
 	beanFactory.ignoreDependencyInterface(MessageSourceAware.class);
 	beanFactory.ignoreDependencyInterface(ApplicationContextAware.class);
 

 	// 注冊(cè)幾個(gè)解析依賴(lài)項(xiàng)，意思是，當(dāng)一個(gè)Bean需要注入對(duì)應(yīng)的類(lèi)時(shí)，使用下面注冊(cè)的這些類(lèi)
 //比如，如果@Autowire 一個(gè)BeanFactory，那么這個(gè)BeanFactory實(shí)際就是在此處注冊(cè)的一個(gè)對(duì)象
 //這幾項(xiàng)分別是：BeanFactory、ResourceLoader、ApplicationEventPublisher、ApplicationContext
 	beanFactory.registerResolvableDependency(BeanFactory.class, beanFactory);
 	beanFactory.registerResolvableDependency(ResourceLoader.class, this);
 	beanFactory.registerResolvableDependency(ApplicationEventPublisher.class, this);
 	beanFactory.registerResolvableDependency(ApplicationContext.class, this);

 	// Detect a LoadTimeWeaver and prepare for weaving, if found.
 	//檢查是否由LoadTimeWeaver，如果有l(wèi)oadTimeWeaver的bean，就放入一個(gè)BeanPostProcessor：LoadTimeWeaverAwareProcessor
 	if (beanFactory.containsBean(LOAD_TIME_WEAVER_BEAN_NAME)) {
 		beanFactory.addBeanPostProcessor(new LoadTimeWeaverAwareProcessor(beanFactory));
 		// Set a temporary ClassLoader for type matching.
 		beanFactory.setTempClassLoader(new ContextTypeMatchClassLoader(beanFactory.getBeanClassLoader()));
 	}
 	
 	// 注冊(cè)environment，注冊(cè)成單例
 	if (!beanFactory.containsLocalBean(ENVIRONMENT_BEAN_NAME)) {
 		beanFactory.registerSingleton(ENVIRONMENT_BEAN_NAME, getEnvironment());
 	}
 	 //注冊(cè)systemProperties 成單例
 	if (!beanFactory.containsLocalBean(SYSTEM_PROPERTIES_BEAN_NAME)) {
 		beanFactory.registerSingleton(SYSTEM_PROPERTIES_BEAN_NAME, getEnvironment().getSystemProperties());
 	}
 //注冊(cè) systemEnvironment 成單例
 	if (!beanFactory.containsLocalBean(SYSTEM_ENVIRONMENT_BEAN_NAME)) {
 		beanFactory.registerSingleton(SYSTEM_ENVIRONMENT_BEAN_NAME, getEnvironment().getSystemEnvironment());
 	}
 }

protected void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) {
 }

protected void invokeBeanFactoryPostProcessors(ConfigurableListableBeanFactory beanFactory) {
 // Invoke BeanDefinitionRegistryPostProcessors first, if any.
 
 //用于存放已處理過(guò)的Bean
 Set<String> processedBeans = new HashSet<String>();
 
 //如果IOC容器是一個(gè)BeanDefinitionRegistry，有了注冊(cè)BeanDefinition的能力，就可以執(zhí)行BeanDefinitionRegistryPostProcessor的postProcessBeanDefinitionRegistry方法
 if (beanFactory instanceof BeanDefinitionRegistry) {
 
 BeanDefinitionRegistry registry = (BeanDefinitionRegistry) beanFactory;
 
 //regularPostProcessors用于存放普通的BeanFactoryPostProcessor
 List<BeanFactoryPostProcessor> 
 regularPostProcessors = new LinkedList<BeanFactoryPostProcessor>();
 
 //registryPostProcessors用于存放 BeanDefinitionRegistryPostProcessor
 List<BeanDefinitionRegistryPostProcessor> 
 registryPostProcessors = new LinkedList<BeanDefinitionRegistryPostProcessor>();
 
 //查詢(xún)通過(guò)addBeanFactoryPostProcessor等方法設(shè)置進(jìn)來(lái)的的BeanFactoryPostProcessor（不是注冊(cè)到IOC容器的中）
 for (BeanFactoryPostProcessor postProcessor : getBeanFactoryPostProcessors()) {
 
 //如果是 BeanDefinitionRegistryPostProcessor ，
 //就先執(zhí)行它的postProcessBeanDefinitionRegistry，用于向IOC中注冊(cè)一些BeanDefinition，
 //然后添加到registryPostProcessors隊(duì)列中
 if (postProcessor instanceof BeanDefinitionRegistryPostProcessor) {
 BeanDefinitionRegistryPostProcessor registryPostProcessor =
  (BeanDefinitionRegistryPostProcessor) postProcessor;
				 
 	registryPostProcessor.postProcessBeanDefinitionRegistry(registry);
 registryPostProcessors.add(registryPostProcessor);
 }
 else {
 //如果是普通的BeanFactoryPostProcessor，就添加到regularPostProcessors隊(duì)列中
 regularPostProcessors.add(postProcessor);
 }
 }
 
 //獲取IOC容器中注冊(cè)的BeanDefinitionRegistryPostProcessor，
 //放入到registryPostProcessorBeans中，
 //并按照Order排序
 Map<String, BeanDefinitionRegistryPostProcessor> beanMap =
 beanFactory.getBeansOfType(BeanDefinitionRegistryPostProcessor.class, true, false);
 
 List<BeanDefinitionRegistryPostProcessor> registryPostProcessorBeans =
 new ArrayList<BeanDefinitionRegistryPostProcessor>(beanMap.values());
 
 OrderComparator.sort(registryPostProcessorBeans);
 
 //先調(diào)用registryPostProcessorBeans中的所有postProcessBeanDefinitionRegistry方法
 for (BeanDefinitionRegistryPostProcessor postProcessor : registryPostProcessorBeans) {
 postProcessor.postProcessBeanDefinitionRegistry(registry);
 }
 //先調(diào)用 registryPostProcessors中的postProcessBeanFactory方法
 //再調(diào)用 registryPostProcessorBeans中的postProcessBeanFactory方法
 //最后調(diào)用 regularPostProcessors中的postProcessBeanFactory方法
 invokeBeanFactoryPostProcessors(registryPostProcessors, beanFactory);
 invokeBeanFactoryPostProcessors(registryPostProcessorBeans, beanFactory);
 invokeBeanFactoryPostProcessors(regularPostProcessors, beanFactory);
 
 //對(duì)于IOC容器中注冊(cè)的BeanDefinitionRegistryPostProcessor來(lái)說(shuō)，還要放置到processedBeans中，放置重復(fù)調(diào)用
 processedBeans.addAll(beanMap.keySet());
 }
 else {
 //如果IOC就是一個(gè)普通的BeanFacotry，就直接從context中取出所有的BeanFactoryPostProcessor，并調(diào)用他們的postProcessBeanFactory方法
 // Invoke factory processors registered with the context instance.
 invokeBeanFactoryPostProcessors(getBeanFactoryPostProcessors(), beanFactory);
 }
	
 // Do not initialize FactoryBeans here: We need to leave all regular beans
 // 查詢(xún)IOC容器中所有的BeanFactoryPostProcessor，有可能上面的BeanDefinitionRegistryPostProcessor剛剛向IOC容器中注冊(cè)了一些BeanFactoryPostProcessor，所以要在此處全部查出來(lái)。
 String[] postProcessorNames =
 beanFactory.getBeanNamesForType(BeanFactoryPostProcessor.class, true, false);

 // 按照 這些BeanFactoryPostProcessor實(shí)現(xiàn)的排序接口（ PriorityOrdered 和 Ordered）分成3組
 //第一組 實(shí)現(xiàn)了PriorityOrdered --- priorityOrderedPostProcessors
 //第二組 實(shí)現(xiàn)了Ordered --- orderedPostProcessorNames
 //第三組 沒(méi)有實(shí)現(xiàn)排序接口 --- nonOrderedPostProcessorNames
 List<BeanFactoryPostProcessor> priorityOrderedPostProcessors = new ArrayList<BeanFactoryPostProcessor>();
 List<String> orderedPostProcessorNames = new ArrayList<String>();
 List<String> nonOrderedPostProcessorNames = new ArrayList<String>();
 
 for (String ppName : postProcessorNames) {
 //如果已經(jīng)處理了，就跳過(guò)
 if (processedBeans.contains(ppName)) {
 // skip - already processed in first phase above
 }
 //實(shí)現(xiàn)PriorityOrdered 接口的
 else if (isTypeMatch(ppName, PriorityOrdered.class)) {
 
 priorityOrderedPostProcessors.add(beanFactory.getBean(ppName, BeanFactoryPostProcessor.class));
 }
 // 實(shí)現(xiàn)Ordered 接口的
 else if (isTypeMatch(ppName, Ordered.class)) {
 orderedPostProcessorNames.add(ppName);
 }
 //普通的
 else {
 nonOrderedPostProcessorNames.add(ppName);
 }
 }
 //然后先執(zhí)行priorityOrderedPostProcessors中的，再執(zhí)行orderedPostProcessorNames的，最后執(zhí)行nonOrderedPostProcessorNames
	
 //排序并執(zhí)行priorityOrderedPostProcessors的
 OrderComparator.sort(priorityOrderedPostProcessors);
 invokeBeanFactoryPostProcessors(priorityOrderedPostProcessors, beanFactory);

 // 排序并執(zhí)行orderedPostProcessors的
 List<BeanFactoryPostProcessor> orderedPostProcessors = new ArrayList<BeanFactoryPostProcessor>();
 for (String postProcessorName : orderedPostProcessorNames) {
 orderedPostProcessors.add(getBean(postProcessorName, BeanFactoryPostProcessor.class));
 }
 OrderComparator.sort(orderedPostProcessors);
 invokeBeanFactoryPostProcessors(orderedPostProcessors, beanFactory);

 // 最后執(zhí)行普通的BeanFactoryPostProcessor的
 List<BeanFactoryPostProcessor> nonOrderedPostProcessors = new ArrayList<BeanFactoryPostProcessor>();
 for (String postProcessorName : nonOrderedPostProcessorNames) {
 nonOrderedPostProcessors.add(getBean(postProcessorName, BeanFactoryPostProcessor.class));
 }
 invokeBeanFactoryPostProcessors(nonOrderedPostProcessors, beanFactory);
}

protected void registerBeanPostProcessors(ConfigurableListableBeanFactory beanFactory) {
 // 獲取IOC中注冊(cè)的 BeanPostProcessor
 String[] postProcessorNames = beanFactory.getBeanNamesForType(BeanPostProcessor.class, true, false);

 // BeanPostProcessorChecker 也是一個(gè) BeanPostProcessor，用于檢查一個(gè)Bean應(yīng)該經(jīng)過(guò)的BeanPostProcessor和
 
 int beanProcessorTargetCount = beanFactory.getBeanPostProcessorCount() + 1 + postProcessorNames.length;
 beanFactory.addBeanPostProcessor(new BeanPostProcessorChecker(beanFactory, beanProcessorTargetCount));

 //按照排序接口分類(lèi)。
 //這里需要注意的是，priorityOrderedPostProcessors里面裝的是BeanPostProcessor
 //而orderedPostProcessorNames和nonOrderedPostProcessorNames里面裝的是BeanPostProcessor的name
 //原因是：實(shí)例化BeanPostProcessor實(shí)現(xiàn)類(lèi)的時(shí)候，也需要調(diào)用IOC中已有的BeanPostProcessor，所以Spring這里沒(méi)有提前實(shí)例化Orderd接口和普通的BeanPostProcessor。
 //因此，這里有一個(gè)有趣的現(xiàn)象，示例化Orderd接口的BeanProcessor的時(shí)候，會(huì)使用PriorityOrdered的BeanPostProcessor進(jìn)行處理
 //實(shí)例化普通的BeanProcessor時(shí)，會(huì)先后經(jīng)過(guò)PriorityOrdered和Orderd接口的BeanPostProcessor的處理
 
 List<BeanPostProcessor> priorityOrderedPostProcessors = new ArrayList<BeanPostProcessor>();
 List<BeanPostProcessor> internalPostProcessors = new ArrayList<BeanPostProcessor>();
 
 List<String> orderedPostProcessorNames = new ArrayList<String>();
 List<String> nonOrderedPostProcessorNames = new ArrayList<String>();
 
 //分類(lèi)
 for (String ppName : postProcessorNames) {
 //PriorityOrdered接口的，先行實(shí)例化，并把MergedBeanDefinitionPostProcessor放入到internalPostProcessors中
 if (isTypeMatch(ppName, PriorityOrdered.class)) {
 BeanPostProcessor pp = beanFactory.getBean(ppName, BeanPostProcessor.class);
 priorityOrderedPostProcessors.add(pp);
 //
 if (pp instanceof MergedBeanDefinitionPostProcessor) {
 internalPostProcessors.add(pp);
 }
 }
 //Ordered接口的，這里只是把name記錄下來(lái)。
 else if (isTypeMatch(ppName, Ordered.class)) {
 //
 orderedPostProcessorNames.add(ppName);
 }
 //普通的，這里只是把name記錄下來(lái)。
 else {
 nonOrderedPostProcessorNames.add(ppName);
 }
 }

 //排序并注冊(cè)PriorityOrdered接口的BeanPostProcessor
 OrderComparator.sort(priorityOrderedPostProcessors);
 registerBeanPostProcessors(beanFactory, priorityOrderedPostProcessors);

 //排序并注冊(cè)O(shè)rdered接口的BeanPostProcessor
 List<BeanPostProcessor> orderedPostProcessors = new ArrayList<BeanPostProcessor>();
 for (String ppName : orderedPostProcessorNames) {
 //這里才進(jìn)行實(shí)例化，所以會(huì)使用實(shí)現(xiàn)了PriorityOrdered接口的BeanPostProcessor進(jìn)行處理
 BeanPostProcessor pp = beanFactory.getBean(ppName, BeanPostProcessor.class);
 orderedPostProcessors.add(pp);
 //把MergedBeanDefinitionPostProcessor放入到internalPostProcessors中
 if (pp instanceof MergedBeanDefinitionPostProcessor) {
 internalPostProcessors.add(pp);
 }
 }
 OrderComparator.sort(orderedPostProcessors);
 registerBeanPostProcessors(beanFactory, orderedPostProcessors);

 // 注冊(cè)普通的BeanPostProcessor
 List<BeanPostProcessor> nonOrderedPostProcessors = new ArrayList<BeanPostProcessor>();
 for (String ppName : nonOrderedPostProcessorNames) {
 //這里才進(jìn)行實(shí)例化，所以會(huì)使用實(shí)現(xiàn)了PriorityOrdered接口或Orderd的BeanPostProcessor進(jìn)行處理
 BeanPostProcessor pp = beanFactory.getBean(ppName, BeanPostProcessor.class);
 nonOrderedPostProcessors.add(pp);
 //把 MergedBeanDefinitionPostProcessor 放入到internalPostProcessors中
 //同時(shí)注意到，即使在internalPostProcessors中
 //BeanPostProcessor的順序也是按照 PriorityOrderd > Orderd > 普通 的順序進(jìn)入的。
 if (pp instanceof MergedBeanDefinitionPostProcessor) {
 internalPostProcessors.add(pp);
 }
 }
 registerBeanPostProcessors(beanFactory, nonOrderedPostProcessors);

 //注冊(cè)所有的MergedBeanDefinitionPostProcessor
 OrderComparator.sort(internalPostProcessors);
 registerBeanPostProcessors(beanFactory, internalPostProcessors);
	
 //最后，在末尾添加一個(gè)ApplicationListenerDetector
 beanFactory.addBeanPostProcessor(new ApplicationListenerDetector());
}

protected void initMessageSource() {
 ConfigurableListableBeanFactory beanFactory = getBeanFactory();
 if (beanFactory.containsLocalBean(MESSAGE_SOURCE_BEAN_NAME)) {
 this.messageSource = beanFactory.getBean(MESSAGE_SOURCE_BEAN_NAME, MessageSource.class);
 // Make MessageSource aware of parent MessageSource.
 //如果已經(jīng)注冊(cè)了 messageSource && messageSource是HierarchicalMessageSource && messageSource沒(méi)有parent && 此IOC有parent 
 if (this.parent != null && this.messageSource instanceof HierarchicalMessageSource) {
 HierarchicalMessageSource hms = (HierarchicalMessageSource) this.messageSource;
 if (hms.getParentMessageSource() == null) {
 // Only set parent context as parent MessageSource if no parent MessageSource
 // registered already.
 hms.setParentMessageSource(getInternalParentMessageSource());
 }
 }
 if (logger.isDebugEnabled()) {
 logger.debug("Using MessageSource [" + this.messageSource + "]");
 }
 }
 //如果沒(méi)有注冊(cè)messageSource，就創(chuàng)建一個(gè)DelegatingMessageSource,并注冊(cè)到IOC中
 else {
 // Use empty MessageSource to be able to accept getMessage calls.
 DelegatingMessageSource dms = new DelegatingMessageSource();
 dms.setParentMessageSource(getInternalParentMessageSource());
 this.messageSource = dms;
 beanFactory.registerSingleton(MESSAGE_SOURCE_BEAN_NAME, this.messageSource);
 if (logger.isDebugEnabled()) {
 logger.debug("Unable to locate MessageSource with name '" + MESSAGE_SOURCE_BEAN_NAME +
  "': using default [" + this.messageSource + "]");
 }
 }
}

protected void initApplicationEventMulticaster() {
 ConfigurableListableBeanFactory beanFactory = getBeanFactory();
 //如果有開(kāi)發(fā)自定的applicationEventMulticaster實(shí)例bean，則設(shè)置IOC的事件廣播器為該實(shí)例
 if (beanFactory.containsLocalBean(APPLICATION_EVENT_MULTICASTER_BEAN_NAME)) {
 this.applicationEventMulticaster =
 beanFactory.getBean(APPLICATION_EVENT_MULTICASTER_BEAN_NAME, ApplicationEventMulticaster.class);
 if (logger.isDebugEnabled()) {
 logger.debug("Using ApplicationEventMulticaster [" + this.applicationEventMulticaster + "]");
 }
 }
 //如果沒(méi)有applicationEventMulticaster，就設(shè)置一個(gè)SimpleApplicationEventMulticaster
 else {
 this.applicationEventMulticaster = new SimpleApplicationEventMulticaster(beanFactory);
 beanFactory.registerSingleton(APPLICATION_EVENT_MULTICASTER_BEAN_NAME, this.applicationEventMulticaster);
 if (logger.isDebugEnabled()) {
 logger.debug("Unable to locate ApplicationEventMulticaster with name '" +
  APPLICATION_EVENT_MULTICASTER_BEAN_NAME +
  "': using default [" + this.applicationEventMulticaster + "]");
 }
 }
}

protected void onRefresh() throws BeansException {
		// For subclasses: do nothing by default.
}

protected void registerListeners() {
 // 查出所有通過(guò)addApplicationListener方法添加的ApplicationListener，然后注冊(cè)到事件廣播器上
 for (ApplicationListener<?> listener : getApplicationListeners()) {
 getApplicationEventMulticaster().addApplicationListener(listener);
 }

 // 查出ioc容器中的所有ApplicationListener，只把他們注冊(cè)到事件分發(fā)器的ApplicationListenerBean上，
 // 待使用時(shí)再進(jìn)行實(shí)例化
 String[] listenerBeanNames = getBeanNamesForType(ApplicationListener.class, true, false);
 for (String listenerBeanName : listenerBeanNames) {
 getApplicationEventMulticaster().addApplicationListenerBean(listenerBeanName);
 }
}

protected void finishBeanFactoryInitialization(ConfigurableListableBeanFactory beanFactory) {
 //如果IOC中有conversionService的話，就實(shí)例化并設(shè)置到IOC中
 //conversionService用于類(lèi)型轉(zhuǎn)換
 if (beanFactory.containsBean(CONVERSION_SERVICE_BEAN_NAME) &&
 beanFactory.isTypeMatch(CONVERSION_SERVICE_BEAN_NAME, ConversionService.class)) {
 beanFactory.setConversionService(
 beanFactory.getBean(CONVERSION_SERVICE_BEAN_NAME, ConversionService.class));
 }
 // 如果有LoadTimeWeaverAware，就實(shí)例化
 String[] weaverAwareNames = beanFactory.getBeanNamesForType(LoadTimeWeaverAware.class, false, false);
 for (String weaverAwareName : weaverAwareNames) {
 getBean(weaverAwareName);
 }
 // 清理臨時(shí)的classLoader
 beanFactory.setTempClassLoader(null);
 // 緩存所有beanDefinition的name，以備不時(shí)之需
 beanFactory.freezeConfiguration();
 // 實(shí)例化所有非non-lazy-init的單例
 beanFactory.preInstantiateSingletons();
}

protected void finishRefresh() {
 // 實(shí)例化或初始化lifecycleProcessor
 initLifecycleProcessor();
 // 調(diào)用lifecycleProcessor的刷新方法
 getLifecycleProcessor().onRefresh();
 //發(fā)布一個(gè)ContextRefreshedEvent事件
 publishEvent(new ContextRefreshedEvent(this));
 // 注冊(cè)MBean，用于JMX管理
 LiveBeansView.registerApplicationContext(this);
}