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SpringApplication初始化

时间:2018-05-11 23:20:06      阅读:233      评论:0      收藏:0      [点我收藏+]

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SpringApplication:
private void initialize(Object[] sources) {
if (sources != null && sources.length > 0) {
this.sources.addAll(Arrays.asList(sources));
}
this.webEnvironment = deduceWebEnvironment();
// 从spring.factories里读取所有 ApplicationContextInitializer,并记入 SpringApplication
setInitializers((Collection) getSpringFactoriesInstances(
ApplicationContextInitializer.class));
// 从spring.factories里读取所有 ApplicationListener,并记入 SpringApplication
setListeners((Collection) getSpringFactoriesInstances(ApplicationListener.class));
this.mainApplicationClass = deduceMainApplicationClass();
}
public ConfigurableApplicationContext run(String... args) {
StopWatch stopWatch = new StopWatch();
stopWatch.start();
ConfigurableApplicationContext context = null;
FailureAnalyzers analyzers = null;
configureHeadlessProperty();
// 从spring.factories里读取所有 SpringApplicationRunListener,监听springboot启动,参考:org.springframework.boot.context.event.EventPublishingRunListener
SpringApplicationRunListeners listeners = getRunListeners(args);
listeners.starting();
try {
ApplicationArguments applicationArguments = new DefaultApplicationArguments(
args);
ConfigurableEnvironment environment = prepareEnvironment(listeners,
applicationArguments);
Banner printedBanner = printBanner(environment);
// web环境下默认的 ApplicationContext: org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext
// 非web环境下默认的 ApplicationContext: org.springframework.context.annotation.AnnotationConfigApplicationContext
context = createApplicationContext();
analyzers = new FailureAnalyzers(context);
// org.springframework.cloud.bootstrap.config.PropertySourceBootstrapProperties 会通过 ApplicationContextInitializer,准备 PropertySource
// PropertySourceBootstrapProperties 收集 PropertySourceLocator 来获得PropertySource
// 其中 org.springframework.cloud.config.client.ConfigServicePropertySourceLocator 是 Cloud Config Client 提供的 PropertySourceLocator
prepareContext(context, environment, listeners, applicationArguments,
printedBanner);
// 调用 context.refresh
refreshContext(context);
afterRefresh(context, applicationArguments);
listeners.finished(context, null);
stopWatch.stop();
if (this.logStartupInfo) {
new StartupInfoLogger(this.mainApplicationClass)
.logStarted(getApplicationLog(), stopWatch);
}
return context;
}
catch (Throwable ex) {
handleRunFailure(context, listeners, analyzers, ex);
throw new IllegalStateException(ex);
}
}

SpringApplication初始化

标签:ack   star   class   length   pre   file   try   array   normal   

原文地址:https://www.cnblogs.com/wangdaijun/p/9026327.html

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