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spring动态bean注册示例分享

发布时间：2022-12-30 03:53:55 来源：互联网

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在这个忧伤而明媚的季节，我从我单薄的青春里打马而过，穿过紫堇，穿过木棉，穿过时隐时现的悲喜和无常。

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);
}
}
}