Spring Framework：是否可以在没有@Configuration的情况下创建具有相同@Component的两个bean？

Question

I'm just doing some experiments with Spring Web Apps in order to learn better how the framework works.

I usually create more beans of the same class using @Configuration class and @Bean methods and use @Component (and its derivates @Controller , @Service , @Repository ) to let Spring inject only a single bean of the annotated class.

My question is, is that possible to create more beans of the same @Component class without using @Configuration and @Bean ?

For instance having:

@Component
public class MyClass{}

and injecting this class in two different beans such as:

@Autowired MyClass beanA;
@Autowired MyClass beanB;

I've tried doing so and OF COURSE I got two instances pointing at the exact same bean in memory.

Answer 1

In Spring by default all beans have singleton scope unless specified otherwise. Hence you get the same instance when you Autowire it.

If you want a new instance you need to specify with @Scope

@Component
@Scope("prototype")
public class MyClass{}