从spring容器中动态添加或移除bean

最新推荐文章于 2025-04-10 14:24:55 发布

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最新推荐文章于 2025-04-10 14:24:55 发布

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分类专栏： spring 文章标签： spring java 后端

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public class DemoUtil {

    @Autowired
    private ApplicationContext applicationContext;


//添加bean
    public void addBean(String beanName, Class<?> beanClass) {
        BeanDefinitionRegistry beanDefinitionRegistry = (BeanDefinitionRegistry) applicationContext.getAutowireCapableBeanFactory();
        BeanDefinitionBuilder beanDefinitionBuilder = BeanDefinitionBuilder.genericBeanDefinition(beanClass);
        BeanDefinition beanDefinition = beanDefinitionBuilder.getBeanDefinition();
        if (!beanDefinitionRegistry.containsBeanDefinition(beanName)) {
            beanDefinitionRegistry.registerBeanDefinition(beanName, beanDefinition);
        }
    }

//移除bean
    public void removeBean(String beanName) {
        BeanDefinitionRegistry beanDefinitionRegistry = (BeanDefinitionRegistry) applicationContext.getAutowireCapableBeanFactory();
        beanDefinitionRegistry.getBeanDefinition(beanName);
        beanDefinitionRegistry.removeBeanDefinition(beanName);
    }

}