springmvc集成swagger-ui报错Unable to infer base url

报错信息:
 Unable to infer base url. This is common when using dynamic servlet registration or when 
 the API is behind an API Gateway. The base url is the root of where all the swagger resources are served. 
 For e.g. if the api is available at http://example.org/api/v2/api-docs then 
 the base url is http://example.org/api/. Please enter the location manually: 
截图:
      
本例解决:
    在自定义的SwaggerConfig类上添加如下三个注解,
    @EnableWebMvc
    @Configuration
    @EnableSwagger2
以上,TKS.