Springboot起動構成原理(起動原理、運転フロー、自動構成原理)

Springboot起動構成原理(起動原理、運転フロー、自動構成原理)
1.いくつかの重要なイベントコールバックメカニズムに関連するインタフェース
(1)、ApplicationContextInitializer.initialize()
(2)、SpringApplicationRunListener
(3)、ApplicationRunner
(4)、CommandLineRunner
2.プロセスの開始
(1)SpringApplicationオブジェクトの作成
この手順は、次の2つのステップに分けられます.
a.SpringApplicationオブジェクトの作成、b.runメソッドの実行

    public static ConfigurableApplicationContext run(Class<?> primarySource, String... args) {
        return run(new Class[]{primarySource}, args);
    }

    public static ConfigurableApplicationContext run(Class<?>[] primarySources, String[] args) {
        return (new SpringApplication(primarySources)).run(args);
    }

(2)アプリケーションの起動

	/**
	 * Run the Spring application, creating and refreshing a new
	 * {@link ApplicationContext}.
	 * @param args the application arguments (usually passed from a Java main method)
	 * @return a running {@link ApplicationContext}
	 */
	public ConfigurableApplicationContext run(String... args) {
		StopWatch stopWatch = new StopWatch();
		stopWatch.start();
		ConfigurableApplicationContext context = null;
		Collection<SpringBootExceptionReporter> exceptionReporters = new ArrayList<>();
		configureHeadlessProperty();
        //  SpringApplicationRunListeners；      MATA-INFO/spring.factories
		SpringApplicationRunListeners listeners = getRunListeners(args);
        //       SpringApplicationRunListeners.starting();
		listeners.starting();
		try {
            //    
			ApplicationArguments applicationArguments = new DefaultApplicationArguments(args);
            //    
			ConfigurableEnvironment environment = prepareEnvironment(listeners, applicationArguments);
			configureIgnoreBeanInfo(environment);
            //    
			Banner printedBanner = printBanner(environment);
            //  ApplicationContext
			context = createApplicationContext();
			exceptionReporters = getSpringFactoriesInstances(SpringBootExceptionReporter.class,
					new Class[] { ConfigurableApplicationContext.class }, context);
            //       （ApplicationContextInitializer）
			prepareContext(context, environment, listeners, applicationArguments, printedBanner);
            //    ，ioc     
			refreshContext(context);
            // ioc        ApplicationRunner CommandLineRunner    （ApplicationRunner   ，CommandLineRunner   ）
			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);
		}
        //  springboot            ioc  
		return context;
	}

未完待续...