SpringBoot区分环境底层代码逻辑

//1、SpringApplication 类
    //入口： 
    public ConfigurableApplicationContext run(String... args) {
        ...
        ConfigurableEnvironment environment = this.prepareEnvironment(listeners, bootstrapContext, applicationArguments);
        ...
    }

    private ConfigurableEnvironment prepareEnvironment(SpringApplicationRunListeners listeners, DefaultBootstrapContext bootstrapContext, ApplicationArguments applicationArguments) {
        ...
        this.configureEnvironment((ConfigurableEnvironment)environment, applicationArguments.getSourceArgs());
        ...
    }    

    protected void configureEnvironment(ConfigurableEnvironment environment, String[] args) {
        ...
        this.configureProfiles(environment, args);  
    }   
    
    protected void configureProfiles(ConfigurableEnvironment environment, String[] args) {
        Set<String> profiles = new LinkedHashSet(this.additionalProfiles);
        profiles.addAll(Arrays.asList(env