Spring框架的AnnotationConfigApplicationContext初始化流程（3）

AnnotationConfigApplicationContext的构造方法的register方法

public AnnotationConfigApplicationContext(Class<?>... componentClasses) {
    this();
    register(componentClasses);
    refresh();
}

public void register(Class<?>... componentClasses) {
    Assert.notEmpty(componentClasses, "At least one component class must be specified");
    StartupStep registerComponentClass = getApplicationStartup().start("spring.context.component-classes.register")
          .tag("classes", () -> Arrays.toString(componentClasses));
    this.reader.register(componentClasses);
    registerComponentClass.end();
}

调用 AnnotatedBeanDefinitionReader类的register方法

public void register(Class<?>... componentClasses) {
    for (Class<?> componentClass : componentClasses) {
       registerBean(componentClass);
    }
}

public void registerBean(Class<?> beanClass) {
    doRegisterBean(beanClass, null, null, null, null);
}

private <T> void doRegisterBean(Class<T> beanClass, @Nullable String name,
       @Nullable Class<? extends Annotation>[] qualifiers, @Nullable Supplier<T> supplier,
       @Nullable BeanDefinitionCustomizer[] customizers) {

    AnnotatedGenericBeanDefinition abd = new AnnotatedGenericBeanDefinition(beanClass);
    if (this.conditionEvaluator.shouldSkip(abd.getMetadata())) {
       return;
    }

    abd.setInstanceSupplier(supplier);
    ScopeMetadata scopeMetadata = this.scopeMetadataResolver.resolveScopeMetadata(abd);
    abd.setScope(scopeMetadata.getScopeName());
    String beanName = (name != null ? name : this.beanNameGenerator.generateBeanName(abd, this.registry));

    AnnotationConfigUtils.processCommonDefinitionAnnotations(abd);
    if (qualifiers != null) {
       for (Class<? extends Annotation> qualifier : qualifiers) {
          if (Primary.class == qualifier) {
             abd.setPrimary(true);
          }
          else if (Lazy.class == qualifier) {
             abd.setLazyInit(true);
          }
          else {
             abd.addQualifier(new AutowireCandidateQualifier(qualifier));
          }
       }
    }
    if (customizers != null) {
       for (BeanDefinitionCustomizer customizer : customizers) {
          customizer.customize(abd);
       }
    }

    BeanDefinitionHolder definitionHolder = new BeanDefinitionHolder(abd, beanName);
    definitionHolder = AnnotationConfigUtils.applyScopedProxyMode(scopeMetadata, definitionHolder, this.registry);
    BeanDefinitionReaderUtils.registerBeanDefinition(definitionHolder, this.registry);
}

流程