【Spring源码解析】组件注册-注解注册bean

前言

接上一篇 Spring源码解析之xml注册bean

实现

1. 注解配置

@Configuration
public class BeanConfig {

    @Bean
    public Person person() {
        return new Person("config", 18);
    }
}

2. 测试

public class MainTest {

    public static void main(String[] args) {
        AnnotationConfigApplicationContext applicationContext = new AnnotationConfigApplicationContext(BeanConfig.class);
        Person bean = applicationContext.getBean(Person.class);
        System.out.println(bean);   // Person{name='config', age=18}

        String[] namesForType = applicationContext.getBeanNamesForType(Person.class);
        for (String name: namesForType) {
            System.out.println(name);   // person
        }

    }
}

最后

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