spring动态bean注册示例分享
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2021-01-08
19:17:25
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spring动态动态bean注册示例分享注册示例分享
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
代码如下:
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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