SpringApplication类之run方法

StopWatch stopWatch = new StopWatch();
stopWatch.start();
ConfigurableApplicationContext context = null;		Collection<SpringBootExceptionReporter> exceptionReporters = new ArrayList<>();		configureHeadlessProperty();
SpringApplicationRunListeners listeners = getRunListeners(args);
listeners.starting();
try {
	ApplicationArguments applicationArguments = new DefaultApplicationArguments(
					args);
	ConfigurableEnvironment environment = prepareEnvironment(listeners,
					applicationArguments);
	configureIgnoreBeanInfo(environment);
	Banner printedBanner = printBanner(environment);
	context = createApplicationContext();
	exceptionReporters = getSpringFactoriesInstances(
			SpringBootExceptionReporter.class,
					new Class[] { ConfigurableApplicationContext.class }, context);
	prepareContext(context, environment, listeners, applicationArguments,
					printedBanner);
	refreshContext(context);
	afterRefresh(context, applicationArguments);
	stopWatch.stop();
	if (this.logStartupInfo) {
		new StartupInfoLogger(this.mainApplicationClass)
					.logStarted(getApplicationLog(), stopWatch);
			}
		listeners.started(context);
		callRunners(context, applicationArguments);
	}
	catch (Throwable ex) {
		handleRunFailure(context, ex, exceptionReporters, listeners);
			throw new IllegalStateException(ex);
		}

		try {
			listeners.running(context);
		}
		catch (Throwable ex) {
			handleRunFailure(context, ex, exceptionReporters, null);
			throw new IllegalStateException(ex);
		}
		return context;