提示一下错误

Whitelabel Error Page 
  This application has no explicit mapping for /error, so you are seeing this as a fallback.  
  Wed Aug 29 11:02:44 CST 2018  
  There was an unexpected error (type=Not Found, status=404).  
  No message available

是因为swagger-ui.html 是在springfox-swagger-ui.jar里的，因为修改了路径Spring Boot不会自动把/swagger-ui.html这个路径映射到对应的目录META-INF/resources/下面。
所以我们修改springboot配置类，为swagger建立新的静态文件路径映射就可以了

@Configuration
public class WebMVCConfig extends WebMvcConfigurerAdapter {
    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler("swagger-ui.html")
                .addResourceLocations("classpath:/META-INF/resources/");
          registry.addResourceHandler("/webjars/**")
                 .addResourceLocations("classpath:/META-INF/resources/webjars/");
    }
}