Spring boot 动态创建Bean的方法

​​https://www.jb51.net/article/145125.htm​​

 

public  T registerBean(String name, Class clazz, Object... args) {
   BeanDefinitionBuilder beanDefinitionBuilder = BeanDefinitionBuilder.genericBeanDefinition(clazz);
   if (args.length > 0) {
     for (Object arg : args) {
       beanDefinitionBuilder.addConstructorArgValue(arg);
     }
   }
   BeanDefinition beanDefinition = beanDefinitionBuilder.getRawBeanDefinition();
  
   BeanDefinitionRegistry beanFactory = (BeanDefinitionRegistry) applicationContext.getBeanFactory();
   beanFactory.registerBeanDefinition(name, beanDefinition);
   return applicationContext.getBean(name, clazz);
}