Spring 的动态注册方式

方法一 :
定义一个bean

public class Person {

    private  String name;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    @Override
    public String toString() {
        return "Person{" +
                "name='" + name + '\'' +
                '}';
    }
}

然后实现BeanDefinitionRegistryPostProcessor

@Component
public class MyBeanDefinitionRegistryPostProcessor implements BeanDefinitionRegistryPostProcessor {
    @Override
    public void postProcessBeanDefinitionRegistry(BeanDefinitionRegistry registry) throws BeansException {
        for (int i = 0; i < 10; i++) {
            BeanDefinitionBuilder builder = BeanDefinitionBuilder.rootBeanDefinition(Person.class);
            builder.addPropertyValue("name", "sfz_" + i);
            registry.registerBeanDefinition("person" + i, builder.getBeanDefinition());
        }
    }

    @Override
    public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) throws BeansException {

    }
}

方法二 :

public class App4 {

    public static void main(String[] args) {
        AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext("com.youlanai.com.du");
        BeanDefinitionBuilder builder = BeanDefinitionBuilder.rootBeanDefinition(Person.class);
        builder.addPropertyValue("name","songfazhun");
        context.registerBeanDefinition("Person_app",builder.getBeanDefinition());

        context.getBeansOfType(Person.class).values().forEach(System.out::println);


        context.close();
    }
}