ApplicationContext的初始化的最后一步就是要刷新过程，什么是刷新过程？其实Spring关闭的时候调用stop方法来结束生命周期，通常用来配置后台程序，在启动后一直运行（如对MQ进行轮询等）。我们先来看调用的时序图。（相关资源可到这里下载：http://pan.baidu.com/s/1sjSo9a9）

首先，Spring先调用的是finishRefresh()的方法。

/**
	 * Finish the refresh of this context, invoking the LifecycleProcessor's
	 * onRefresh() method and publishing the
	 * {@link org.springframework.context.event.ContextRefreshedEvent}.
	 */
	protected void finishRefresh() {
		// Initialize lifecycle processor for this context.
		initLifecycleProcessor();

		// Propagate refresh to lifecycle processor first.
		getLifecycleProcessor().onRefresh();

		// Publish the final event.
		publishEvent(new ContextRefreshedEvent(this));

		// Participate in LiveBeansView MBean, if active.
		LiveBeansView.registerApplicationContext(this);
	}

之后，我们会发现，Spring的ApplicationContext启动或停止时，它会通过LifecycleProcessor来与所有声明的bean的周期做状态，而LifecycleProcessor的使用前首先需要初始化。

/**
	 * Initialize the LifecycleProcessor.
	 * Uses DefaultLifecycleProcessor if none defined in the context.
	 * @see org.springframework.context.support.DefaultLifecycleProcessor
	 */
	protected void initLifecycleProcessor() {
		ConfigurableListableBeanFactory beanFactory = getBeanFactory();
		if (beanFactory.containsLocalBean(LIFECYCLE_PROCESSOR_BEAN_NAME)) {
			this.lifecycleProcessor =
					beanFactory.getBean(LIFECYCLE_PROCESSOR_BEAN_NAME, LifecycleProcessor.class);
			if (logger.isDebugEnabled()) {
				logger.debug("Using LifecycleProcessor [" + this.lifecycleProcessor + "]");
			}
		}
		else {
			DefaultLifecycleProcessor defaultProcessor = new DefaultLifecycleProcessor();
			defaultProcessor.setBeanFactory(beanFactory);
			this.lifecycleProcessor = defaultProcessor;
			beanFactory.registerSingleton(LIFECYCLE_PROCESSOR_BEAN_NAME, this.lifecycleProcessor);
			if (logger.isDebugEnabled()) {
				logger.debug("Unable to locate LifecycleProcessor with name '" +
						LIFECYCLE_PROCESSOR_BEAN_NAME +
						"': using default [" + this.lifecycleProcessor + "]");
			}
		}
	}

当做finishRefresh()方法，还有两个的方法调用也是值得我们去跟踪的，那就是onRefresh()的方法，及它间接调用了startBeans的方法。

@Override
	public void onRefresh() {
		startBeans(true);
		this.running = true;
	}

private void startBeans(boolean autoStartupOnly) {
		Map<String, Lifecycle> lifecycleBeans = getLifecycleBeans();
		Map<Integer, LifecycleGroup> phases = new HashMap<Integer, LifecycleGroup>();
		for (Map.Entry<String, ? extends Lifecycle> entry : lifecycleBeans.entrySet()) {
			Lifecycle bean = entry.getValue();
			if (!autoStartupOnly || (bean instanceof SmartLifecycle && ((SmartLifecycle) bean).isAutoStartup())) {
				int phase = getPhase(bean);
				LifecycleGroup group = phases.get(phase);
				if (group == null) {
					group = new LifecycleGroup(phase, this.timeoutPerShutdownPhase, lifecycleBeans, autoStartupOnly);
					phases.put(phase, group);
				}
				group.add(entry.getKey(), bean);
			}
		}
		if (phases.size() > 0) {
			List<Integer> keys = new ArrayList<Integer>(phases.keySet());
			Collections.sort(keys);
			for (Integer key : keys) {
				phases.get(key).start();
			}
		}
	}

 最后，我们来看一下publishEvent的源码。

/**
	 * Publish the given event to all listeners.
	 * @param event the event to publish (may be an {@link ApplicationEvent}
	 * or a payload object to be turned into a {@link PayloadApplicationEvent})
	 * @param eventType the resolved event type, if known
	 * @since 4.2
	 */
	protected void publishEvent(Object event, ResolvableType eventType) {
		Assert.notNull(event, "Event must not be null");
		if (logger.isTraceEnabled()) {
			logger.trace("Publishing event in " + getDisplayName() + ": " + event);
		}

		// Decorate event as an ApplicationEvent if necessary
		ApplicationEvent applicationEvent;
		if (event instanceof ApplicationEvent) {
			applicationEvent = (ApplicationEvent) event;
		}
		else {
			applicationEvent = new PayloadApplicationEvent<Object>(this, event);
			if (eventType == null) {
				eventType = ((PayloadApplicationEvent)applicationEvent).getResolvableType();
			}
		}

		// Multicast right now if possible - or lazily once the multicaster is initialized
		if (this.earlyApplicationEvents != null) {
			this.earlyApplicationEvents.add(applicationEvent);
		}
		else {
			getApplicationEventMulticaster().multicastEvent(applicationEvent, eventType);
		}

		// Publish event via parent context as well...
		if (this.parent != null) {
			if (this.parent instanceof AbstractApplicationContext) {
				((AbstractApplicationContext) this.parent).publishEvent(event, eventType);
			}
			else {
				this.parent.publishEvent(event);
			}
		}
	}