springboot ---> spring ioc 注册流程 源码解析 this.prepareContext 部分

           现在都是在springboot 中 集成 spirng，那我们就从springboot 开始。

           一：springboot 启动main 函数

 public static void main(String[] args) throws Exception {
        SpringApplication.run(AuditCenterWebApp.class, args);
 }

　　

　　二：跟踪下来，会进入到springAppliaction  的 run(String... args) 方法。

 public ConfigurableApplicationContext run(String... args) {
        StopWatch stopWatch = new StopWatch();
        stopWatch.start();
        ConfigurableApplicationContext context = null;
        Collection exceptionReporters = new ArrayList();
        this.configureHeadlessProperty();
        SpringApplicationRunListeners listeners = this.getRunListeners(args);
        listeners.starting();

        Collection exceptionReporters;
        try {
            ApplicationArguments applicationArguments = new DefaultApplicationArguments(args);
　　　　　　// 组织环境
            ConfigurableEnvironment environment = this.prepareEnvironment(listeners, applicationArguments);
            this.configureIgnoreBeanInfo(environment);
　　　　　　// 打印我们设置的banner
            Banner printedBanner = this.printBanner(environment);
            /**创建applicationContext 默认webApplicationType 是 SERVLET，
               所以返回的是org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext对象*/
            context = this.createApplicationContext();
            exceptionReporters = this.getSpringFactoriesInstances(SpringBootExceptionReporter.class, new Class[]{ConfigurableApplicationContext.class}, context);
            // 准备上下文
            this.prepareContext(context, environment, listeners, applicationArguments, printedBanner);
            // 刷新上下文
            this.refreshContext(context);
            this.afterRefresh(context, applicationArguments);
            stopWatch.stop();
            if (this.logStartupInfo) {
                (new StartupInfoLogger(this.mainApplicationClass)).logStarted(this.getApplicationLog(), stopWatch);
            }

            listeners.started(context);
            this.callRunners(context, applicationArguments);
        } catch (Throwable var10) {
            this.handleRunFailure(context, var10, exceptionReporters, listeners);
            throw new IllegalStateException(var10);
        }

        try {
            listeners.running(context);
            return context;
        } catch (Throwable var9) {
            this.handleRunFailure(context, var9, exceptionReporters, (SpringApplicationRunListeners)null);
            throw new IllegalStateException(var9);
        }
    }

           

　　三：准备上下文 this.prepareContext 

点击进入，跟踪 this.load(context, sources.toArray(new Object[0])); 方法

    private void prepareContext(ConfigurableApplicationContext context, ConfigurableEnvironment environment, SpringApplicationRunListeners listeners, ApplicationArguments applicationArguments, Banner printedBanner) {
        context.setEnvironment(environment);
        this.postProcessApplicationContext(context);
        this.applyInitializers(context);
        listeners.contextPrepared(context);
        if (this.logStartupInfo) {
            this.logStartupInfo(context.getParent() == null);
            this.logStartupProfileInfo(context);
        }

        context.getBeanFactory().registerSingleton("springApplicationArguments", applicationArguments);
        if (printedBanner != null) {
            context.getBeanFactory().registerSingleton("springBootBanner", printedBanner);
        }

        Set