AnnotationConfigApplicationContext
内部使用了AnnotatedBeanDefinitionReader；ClassPathBeanDefinitionScanner
/**
使用AnnotatedBeanDefinitionReader读取配置类*/
public void register(Class<?>... annotatedClasses) {
Assert.notEmpty(annotatedClasses, "At least one annotated class must be specified");
this.reader.register(annotatedClasses);
} /**
使用ClassPathBeanDefinitionScanner扫描指定包*/
public void scan(String... basePackages) {
Assert.notEmpty(basePackages, "At least one base package must be specified");
this.scanner.scan(basePackages);
} /**
使用AnnotatedBeanDefinitionReader注册一个bean，使用指定的构造函数。*/
public <T> void registerBean(Class<T> annotatedClass, Object... constructorArguments) {
registerBean(null, annotatedClass, constructorArguments);
}
public <T> void registerBean(@Nullable String beanName, Class<T> annotatedClass, Object... constructorArguments) {
this.reader.doRegisterBean(annotatedClass, null, beanName, null,
bd -> {
for (Object arg : constructorArguments) {
bd.getConstructorArgumentValues().addGenericArgumentValue(arg);
}
});
}
@Override
public <T> void registerBean(@Nullable String beanName, Class<T> beanClass, @Nullable Supplier<T> supplier,
BeanDefinitionCustomizer... customizers) {
this.reader.doRegisterBean(beanClass, supplier, beanName, null, customizers);
}
AnnotatedBeanDefinitionReader