eurekaAutoServiceRegistration 异常

方案来自：https://github.com/spring-cloud/spring-cloud-netflix/issues/1952

解决办法：

 @Component
 public class FeignBeanFactoryPostProcessor implements BeanFactoryPostProcessor {

     @Override
     public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) throws BeansException {
         if (containsBeanDefinition(beanFactory, "feignContext", "eurekaAutoServiceRegistration")) {
             BeanDefinition bd = beanFactory.getBeanDefinition("feignContext");
             bd.setDependsOn("eurekaAutoServiceRegistration");
         }
     }

     private boolean containsBeanDefinition(ConfigurableListableBeanFactory beanFactory, String... beans) {
         return Arrays.stream(beans).allMatch(b -> beanFactory.containsBeanDefinition(b));
     }
 }