springboot集成swagger，出现 No mapping for GET /swagger-ui.html的错误

在尝试降低springboot版本和swagger版本都无法解决这个问题后

 <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger2</artifactId>
            <version>2.9.2</version>
        </dependency>
 
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger-ui</artifactId>
            <version>2.9.2</version>
        </dependency>

在SpringBoot项目引入Swagger2后，在浏览器地址里输入地址：http://ip:port/swagger-ui.html 报错：

 控制台出现这样子的错误：swagger  No mapping for GET /swagger-ui.html

解决办法：

 1、在配置类中继承WebMvcConfigurationSupport类，重写addResourceHandlers方法

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

 访问成功