1.注释掉丑陋的前端页面依赖添加knife4j依赖

  <!-- swagger2-UI-->
<!--        <dependency>-->
<!--            <groupId>io.springfox</groupId>-->
<!--            <artifactId>springfox-swagger-ui</artifactId>-->
<!--        </dependency>-->

        <dependency>
            <groupId>com.github.xiaoymin</groupId>
            <artifactId>knife4j-spring-boot-starter</artifactId>
            <version>2.0.7</version>
        </dependency>

2.在swagger配置类添加注解

@EnableSwagger2
@EnableKnife4j

3.修改swagger配置，否则测试接口404

  // 去除swagger项目路径
                //.pathMapping(pathMapping);

显示效果如下