[GitHub] [dubbo] kylixs commented on issue #8201: 重复注册 DubboBootstrapApplicationListener

[GitBox <gi...@apache.org>]

kylixs commented on issue #8201:
URL: https://github.com/apache/dubbo/issues/8201#issuecomment-875372071


   Calling DubboBeanUtils#registerCommonBeans() multiple times will not register beans repeatedly, and do nothing if it has already been registered.
   ```java
       static boolean registerInfrastructureBean(BeanDefinitionRegistry beanDefinitionRegistry,
                                                        String beanName,
                                                        Class<?> beanType) {
   
           boolean registered = false;
   
           if (!beanDefinitionRegistry.containsBeanDefinition(beanName)) {
               RootBeanDefinition beanDefinition = new RootBeanDefinition(beanType);
               beanDefinition.setRole(BeanDefinition.ROLE_INFRASTRUCTURE);
               beanDefinitionRegistry.registerBeanDefinition(beanName, beanDefinition);
               registered = true;
   
               if (log.isDebugEnabled()) {
                   log.debug("The Infrastructure bean definition [" + beanDefinition
                           + "with name [" + beanName + "] has been registered.");
               }
           }
   
           return registered;
       }
   ```


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