when Jsr181HandlerMapping.processBeans() called, it will iterate all the bean in app context private void processBeans(ApplicationContext beanFactory, AnnotationServiceFactory serviceFactory) { String[] beanNames = beanFactory.getBeanDefinitionNames(); // Take any bean name or alias that has a web service annotation for (int i = 0; i < beanNames.length; i++) { if (!beanFactory.isSingleton(beanNames[i])) continue; Class clazz; Object bean; try { clazz = getApplicationContext().getType(beanNames[i]); bean = beanFactory.getBean(beanNames[i]); but if a abstract bean in context, beanFactory.getBean may force spring create abstract bean, and raise a BeanIsAbstractException error. org.springframework.beans.factory.BeanIsAbstractException: Error creating bean with name 'abstractTxDefinition': Bean definition is abstract so we must check the bean definition first, like this ConfigurableApplicationContext.getBeanFactory().getBeanDefinition().isAbstract() maybe we also need to add a service adapter to process lazy init bean.