spring 动态管理bean

 

@Autowired
    private ApplicationContext applicationContext;

//将applicationContext转换为ConfigurableApplicationContext
        ConfigurableApplicationContext configurableApplicationContext = (ConfigurableApplicationContext) applicationContext;
 
        // 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(DriverManagerDataSource.class);
        // 设置属性 需要有set方法 
        beanDefinitionBuilder.addPropertyValue("driverClassName", dbVo.getDriverClassName());
        beanDefinitionBuilder.addPropertyValue("url", dbVo.getUrl());
        beanDefinitionBuilder.addPropertyValue("username", dbVo.getUsername());
        beanDefinitionBuilder.addPropertyValue("password", dbVo.getPassword());
         //设置属性依赖的bean
        beanDefinitionBuilder.addPropertyReference("name","beanName");
        // 注册bean
        defaultListableBeanFactory.registerBeanDefinition("beanName", beanDefinitionBuilder.getRawBeanDefinition());

             //删除bean
        defaultListableBeanFactory.removeBeanDefinition(beanName);