spring 手动注册bean

//将applicationContext转换为ConfigurableApplicationContext
ConfigurableApplicationContext configurableApplicationContext = (ConfigurableApplicationContext) SpringContextUtil.getApplicationContext();

// 获取bean工厂并转换为DefaultListableBeanFactory
DefaultListableBeanFactory defaultListableBeanFactory = (DefaultListableBeanFactory) configurableApplicationContext.getBeanFactory();

// 通过BeanDefinitionBuilder创建bean定义
BeanDefinitionBuilder beanDefinitionBuilder = BeanDefinitionBuilder.genericBeanDefinition(UserController.class);

// 设置属性userService,此属性引用已经定义的bean:userService,这里userService已经被spring容器管理了.
beanDefinitionBuilder.addPropertyReference("userService", "userService");

// 注册bean
defaultListableBeanFactory.registerBeanDefinition("userController", beanDefinitionBuilder.getRawBeanDefinition());


UserController userController = (UserController) SpringContextUtil.getBean("userController");

return userController.toAction("动态注册生成调用");