spring动态bean spring动态bean注册示例分享

时间:2021-03-19 人气:0

想了解spring动态bean注册示例讲解的相关内容吗，在本文为您仔细讲解spring动态bean的相关知识和一些Code实例，欢迎阅读和指正，我们先划重点：spring,动态bean，下面大家一起来学习吧。

1.在一些特殊的场景中需要动态向spring注册bean
2.spring版本2.5.6

public class ServiceServiceImpl implements ServiceService, ApplicationContextAware {

@Override
public void setApplicationContext(org.springframework.context.ApplicationContext applicationContext)
throws BeansException {
this.context = applicationContext;
}

public void addBeanService(Service service) throws BVSException {
  if (!context.containsBean(service.getServiceName())) {
   Class<?> serviceClass = getServiceClass(service.getClassName());
   BeanDefinitionBuilder beanDefinitionBuilder = BeanDefinitionBuilder.genericBeanDefinition(serviceClass);
   beanDefinitionBuilder.addPropertyValue("servicename", service.getServiceName());
   registerBean(service.getServiceName(), beanDefinitionBuilder.getRawBeanDefinition());
  }

}

/**
* @desc 向spring容器注册bean
* @param beanName
* @param beanDefinition
*/
private void registerBean(String beanName, BeanDefinition beanDefinition) {
  ConfigurableApplicationContext configurableApplicationContext = (ConfigurableApplicationContext) context;
  BeanDefinitionRegistry beanDefinitonRegistry = (BeanDefinitionRegistry) configurableApplicationContext
    .getBeanFactory();
  beanDefinitonRegistry.registerBeanDefinition(beanName, beanDefinition);
}

/**
* @desc 根据类名查找class
* @param className
* @return
* @throws BVSException
*/
private Class<?> getServiceClass(String className) throws BVSException {
  try {
   return Thread.currentThread().getContextClassLoader().loadClass(className);
  } catch (ClassNotFoundException e) {
   log.error("not found service class:" + className, e);
   throw new BVSException("not found service class:" + className, e);
  }
}
}

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