spring 动态创建bean

最新推荐文章于 2023-09-19 09:02:24 发布

原创最新推荐文章于 2023-09-19 09:02:24 发布 · 640 阅读

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//将applicationContext转换为ConfigurableApplicationContext

ConfigurableApplicationContext configurableApplicationContext = (ConfigurableApplicationContext) context;

// 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(UserService.class);

// 设置属性userAcctDAO,此属性引用已经定义的bean:userAcctDAO
beanDefinitionBuilder.addPropertyReference("userDao", "userDao");

beanDefinitionBuilder.addPropertyValue("name", "serviceName");

// 注册bean
defaultListableBeanFactory.registerBeanDefinition("myService",beanDefinitionBuilder.getRawBeanDefinition());
UserService us = (UserService) context.getBean("myService");
us.test();