SpringBoot-2.7.8---工作流程：
Sb30StartupApplication【10】->SpringApplication.run(Sb30StartupApplication.class, args);
SpringApplication【815】->return run(new Class[]{primarySource}, args);
SpringApplication【819】->return (new SpringApplication(primarySources)).run(args);
#加載各種配置信息，初始化各種配置對象
SpringApplication【819】->new SpringApplication(primarySources))
SpringApplication【98】->this((ResourceLoader)null, primarySources);
SpringApplication【101】->public SpringApplication(ResourceLoader resourceLoader, Class... primarySources) {
SpringApplication【102】->this.sources = new LinkedHashSet();
SpringApplication【103】->this.bannerMode = Mode.CONSOLE;
SpringApplication【104】->this.logStartupInfo = true;
SpringApplication【105】->this.addCommandLineProperties = true;
SpringApplication【106】->this.addConversionService = true;
SpringApplication【107】->this.headless = true;
SpringApplication【108】->this.registerShutdownHook = true;
SpringApplication【109】->this.additionalProfiles = Collections.emptySet();
SpringApplication【110】->this.isCustomEnvironment = false;
SpringApplication【111】->this.lazyInitialization = false;
SpringApplication【112】->this.applicationContextFactory = ApplicationContextFactory.DEFAULT;
SpringApplication【113】->this.applicationStartup = ApplicationStartup.DEFAULT;
#初始化資源加載器
SpringApplication【114】->this.resourceLoader = resourceLoader;
SpringApplication【115】->Assert.notNull(primarySources, "PrimarySources must not be null");
# 初始化配置類的類名信息(樣式轉(zhuǎn)換)
SpringApplication【116】->this.primarySources = new LinkedHashSet(Arrays.asList(primarySources));
#確認(rèn)當(dāng)前容器加載的類型
SpringApplication【117】->this.webApplicationType = WebApplicationType.deduceFromClasspath();
#獲取系統(tǒng)配置引導(dǎo)信息
SpringApplication【118】->this.bootstrapRegistryInitializers = new ArrayList(this.getSpringFactoriesInstances(BootstrapRegistryInitializer.class));
#獲取BootstrapRegistryInitializer.class對應(yīng)的實(shí)例
SpringApplication【119】->this.setInitializers(this.getSpringFactoriesInstances(ApplicationContextInitializer.class));
#初始化監(jiān)聽器 對初始化過程及運(yùn)行過程進(jìn)行干預(yù)
SpringApplication【120】->this.setListeners(this.getSpringFactoriesInstances(ApplicationListener.class));
#初始化引導(dǎo)類的類名信息
SpringApplication【121】->this.mainApplicationClass = this.deduceMainApplicationClass();
#初始化容器
SpringApplication【819】->new SpringApplication(primarySources)).run(args);
SpringApplication【143】->public ConfigurableApplicationContext run(String... args) {
#計(jì)時器開始
SpringApplication【144】->long startTime = System.nanoTime();
#系統(tǒng)引導(dǎo)信息對應(yīng)的上下文對象
SpringApplication【145】->DefaultBootstrapContext bootstrapContext = this.createBootstrapContext();
SpringApplication【146】->ConfigurableApplicationContext context = null;
#模擬輸入輸出信號击狮，避免因缺少外設(shè)而導(dǎo)致的信號傳輸失敵锪辍（模擬顯示器，鍵盤沿彭，鼠標(biāo)朽砰，）
SpringApplication【147】->this.configureHeadlessProperty();
#獲取當(dāng)前注冊的所有監(jiān)聽器
SpringApplication【148】->SpringApplicationRunListeners listeners = this.getRunListeners(args);
#監(jiān)聽器執(zhí)行了對應(yīng)的操作步驟
SpringApplication【149】->listeners.starting(bootstrapContext, this.mainApplicationClass);
#獲取參數(shù)值
SpringApplication【152】-> ApplicationArguments applicationArguments = new DefaultApplicationArguments(args);
#將前期讀取的數(shù)據(jù)加載成一個環(huán)境對象，用來描述信息
SpringApplication【153】-> ConfigurableEnvironment environment = this.prepareEnvironment(listeners, bootstrapContext, applicationArguments);
#做一個配置喉刘，備用
SpringApplication【154】-> this.configureIgnoreBeanInfo(environment);
#打印圖標(biāo)
SpringApplication【155】-> Banner printedBanner = this.printBanner(environment);
#創(chuàng)建容器對象瞧柔，根據(jù)前期配置的容器類型判定并創(chuàng)建
SpringApplication【156】-> context = this.createApplicationContext();
#設(shè)置啟動模式
SpringApplication【157】-> context.setApplicationStartup(this.applicationStartup);
#對容器進(jìn)行設(shè)置，參數(shù)來源于前期的設(shè)定
SpringApplication【158】-> this.prepareContext(bootstrapContext, context, environment, listeners, applicationArguments, printedBanner);
#刷新容器環(huán)境
SpringApplication【159】-> this.refreshContext(context);
#刷新容器環(huán)境后做的后處理
SpringApplication【160】-> this.afterRefresh(context, applicationArguments);
#計(jì)時器結(jié)束
SpringApplication【161】-> Duration timeTakenToStartup = Duration.ofNanos(System.nanoTime() - startTime);
#判斷是否記錄啟動時間的日志
SpringApplication【162】-> if (this.logStartupInfo) {
#創(chuàng)建日志對應(yīng)的對象睦裳，輸出日志信息造锅，包含啟動時間
SpringApplication【163】-> (new StartupInfoLogger(this.mainApplicationClass)).logStarted(this.getApplicationLog(), timeTakenToStartup);
#監(jiān)聽器執(zhí)行了對應(yīng)的操作步驟
SpringApplication【166】-> listeners.started(context, timeTakenToStartup);
SpringApplication【167】-> this.callRunners(context, applicationArguments);

                #計(jì)時器結(jié)束
                SpringApplication【174】->    Duration timeTakenToReady = Duration.ofNanos(System.nanoTime() - startTime);
                #監(jiān)聽器執(zhí)行了對應(yīng)的操作步驟
                SpringApplication【175】->    listeners.ready(context, timeTakenToReady);
                SpringApplication【176】->    return context;