导入Swagger2依赖

 <!-- https://mvnrepository.com/artifact/io.springfox/springfox-swagger2 -->
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger2</artifactId>
            <version>2.9.2</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/io.springfox/springfox-swagger-ui -->
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger-ui</artifactId>
            <version>2.9.2</version>
        </dependency>

编写Swagger配置类

package com.Google.config;


import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.service.Contact;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;

import java.util.ArrayList;

import static springfox.documentation.spi.DocumentationType.SWAGGER_2;

@Configuration  //将这个类交给springBoot托管
@EnableSwagger2 //启用Swagger2
@EnableWebMvc
public class SwaggerConfig implements WebMvcConfigurer {

    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {

        registry.addResourceHandler("/**").addResourceLocations(
                "classpath:/static/");
        registry.addResourceHandler("swagger-ui.html").addResourceLocations(
                "classpath:/META-INF/resources/");
        registry.addResourceHandler("/webjars/**").addResourceLocations(
                "classpath:/META-INF/resources/webjars/");
        WebMvcConfigurer.super.addResourceHandlers(registry);

    }

    //配置Swagger信息
    @Bean
    public Docket docket(){

        return new Docket(DocumentationType.SWAGGER_2).apiInfo(apiInfo());
    }

    private ApiInfo apiInfo(){
        Contact contact = new Contact("小落", "", "2034281742@qq.com"); //作者信息（Contact 联络）
        return  new ApiInfo("小落的API", //文档的标头
                "这个API用来测试", //文档的描述
                "1.0",  //文档的版本号
                "urn:tos",
                contact,
                "Apache 2.0",
                "http://www.apache.org/licenses/LICENSE-2.0",
                new ArrayList()
        );
    }

}

网页效果
访问页面

http://localhost:8080/swagger-ui.html