1、getBeanNamesForType()

AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(PersonConfig.class);
String[] beanNames = context.getBeanNamesForType(Person.class);
Arrays.stream(beanNames).forEach(System.out::println);

// 结果：person

2、getBeanDefinitionNames()

AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(PersonConfig.class);
String[] beanNames = context.getBeanDefinitionNames();
Arrays.stream(beanNames).forEach(System.out::println);

//结果：

org.springframework.context.annotation.internalConfigurationAnnotationProcessor
org.springframework.context.annotation.internalAutowiredAnnotationProcessor
org.springframework.context.annotation.internalRequiredAnnotationProcessor
org.springframework.context.annotation.internalCommonAnnotationProcessor
org.springframework.context.event.internalEventListenerProcessor
org.springframework.context.event.internalEventListenerFactory
personConfig
person