Swagger2

import org.springframework.beans.factory.InitializingBean;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.env.Environment;
import org.springframework.core.io.ClassPathResource;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.handler.SimpleUrlHandlerMapping;
import org.springframework.web.servlet.resource.PathResourceResolver;
import org.springframework.web.servlet.resource.ResourceHttpRequestHandler;
import org.springframework.web.util.UrlPathHelper;
import springfox.documentation.annotations.ApiIgnore;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.service.Contact;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.DocumentationCache;
import springfox.documentation.spring.web.json.Json;
import springfox.documentation.spring.web.json.JsonSerializer;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger.web.ApiResourceController;
import springfox.documentation.swagger.web.SecurityConfiguration;
import springfox.documentation.swagger.web.SwaggerResource;
import springfox.documentation.swagger.web.UiConfiguration;
import springfox.documentation.swagger2.annotations.EnableSwagger2;
import springfox.documentation.swagger2.mappers.ServiceModelToSwagger2Mapper;
import springfox.documentation.swagger2.web.Swagger2Controller;

import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * 集成swagger2管理接口文档
 * 重定向swagger2请求
 */
@Configuration
@EnableSwagger2
public class SwaggerConfig {

    /**
     * swagger开关
     */
    @Value("${swagger.show:false}")
    private boolean swaggerShow;
    @Value("${api.title}")
    private String apiTitle;
    @Value("${api.base.package}")
    private String apiBasePage;
    @Value("${api.project.doc.url}")
    private String apiProjectDocUrl;
    @Value("${api.version}")
    private String apiVersion;
    @Value("${contact.name}")
    private String contactName;
    @Value("${contact.url}")
    private String contactUrl;
    @Value("${contact.email}")
    private String contactEmail;

    @Bean
    public Docket api() {
        return new Docket(DocumentationType.SWAGGER_2)
            .enable(swaggerShow)
            .apiInfo(apiInfo())
            .select()
            .apis(RequestHandlerSelectors.basePackage(apiBasePage))
            .paths(PathSelectors.any())
            .build();
    }

    private ApiInfo apiInfo() {
        return new ApiInfo(apiTitle, apiProjectDocUrl, apiVersion, "",
            new Contact(contactName, contactUrl, contactEmail), "", "", Collections.emptyList());
    }

    private static final String DEFAULT_PATH = "/swagger2";

    /**
     * SwaggerUI资源访问
     *
     * @param servletContext
     * @param order
     * @return
     * @throws Exception
     */
    @Bean
    public SimpleUrlHandlerMapping swaggerUrlHandlerMapping(ServletContext servletContext,
        @Value("${swagger.mapping.order:10}") int order) throws Exception {
        SimpleUrlHandlerMapping urlHandlerMapping = new SimpleUrlHandlerMapping();
        Map<String, ResourceHttpRequestHandler> urlMap = new HashMap<>();
        {
            PathResourceResolver pathResourceResolver = new PathResourceResolver();
            pathResourceResolver.setAllowedLocations(new ClassPathResource("META-INF/resources/webjars/"));
            pathResourceResolver.setUrlPathHelper(new UrlPathHelper());

            ResourceHttpRequestHandler resourceHttpRequestHandler = new ResourceHttpRequestHandler();
            resourceHttpRequestHandler.setLocations(Arrays.asList(new ClassPathResource("META-INF/resources/webjars/")));
            resourceHttpRequestHandler.setResourceResolvers(Arrays.asList(pathResourceResolver));
            resourceHttpRequestHandler.setServletContext(servletContext);
            resourceHttpRequestHandler.afterPropertiesSet();
            //设置新的路径
            urlMap.put(DEFAULT_PATH + "/webjars/**", resourceHttpRequestHandler);
        }
        {
            PathResourceResolver pathResourceResolver = new PathResourceResolver();
            pathResourceResolver.setAllowedLocations(new ClassPathResource("META-INF/resources/"));
            pathResourceResolver.setUrlPathHelper(new UrlPathHelper());

            ResourceHttpRequestHandler resourceHttpRequestHandler = new ResourceHttpRequestHandler();
            resourceHttpRequestHandler.setLocations(Arrays.asList(new ClassPathResource("META-INF/resources/")));
            resourceHttpRequestHandler.setResourceResolvers(Arrays.asList(pathResourceResolver));
            resourceHttpRequestHandler.setServletContext(servletContext);
            resourceHttpRequestHandler.afterPropertiesSet();
            //设置新的路径
            urlMap.put(DEFAULT_PATH + "/**", resourceHttpRequestHandler);
        }
        urlHandlerMapping.setUrlMap(urlMap);
        //调整DispatcherServlet关于SimpleUrlHandlerMapping的排序
        urlHandlerMapping.setOrder(order);
        return urlHandlerMapping;
    }

    /**
     * SwaggerUI接口访问
     */
    @Controller
    @ApiIgnore
    @RequestMapping(DEFAULT_PATH)
    public static class SwaggerResourceController implements InitializingBean {

        @Autowired
        private ApiResourceController apiResourceController;

        @Autowired
        private Environment environment;

        @Autowired
        private DocumentationCache documentationCache;

        @Autowired
        private ServiceModelToSwagger2Mapper mapper;

        @Autowired
        private JsonSerializer jsonSerializer;

        private Swagger2Controller swagger2Controller;

        @Override
        public void afterPropertiesSet() {
            swagger2Controller = new Swagger2Controller(environment, documentationCache, mapper, jsonSerializer);
        }

        /**
         * 首页
         *
         * @return
         */
        @RequestMapping
        public ModelAndView index() {
            ModelAndView modelAndView = new ModelAndView("redirect:" + DEFAULT_PATH + "/swagger-ui.html");
            return modelAndView;
        }

        @RequestMapping("/swagger-resources/configuration/security")
        @ResponseBody
        public ResponseEntity<SecurityConfiguration> securityConfiguration() {
            return apiResourceController.securityConfiguration();
        }

        @RequestMapping("/swagger-resources/configuration/ui")
        @ResponseBody
        public ResponseEntity<UiConfiguration> uiConfiguration() {
            return apiResourceController.uiConfiguration();
        }

        @RequestMapping("/swagger-resources")
        @ResponseBody
        public ResponseEntity<List<SwaggerResource>> swaggerResources() {
            return apiResourceController.swaggerResources();
        }

        @RequestMapping(value = "/v2/api-docs", method = RequestMethod.GET, produces = {"application/json", "application/hal+json"})
        @ResponseBody
        public ResponseEntity<Json> getDocumentation(
            @RequestParam(value = "group", required = false) String swaggerGroup,
            HttpServletRequest servletRequest) {
            return swagger2Controller.getDocumentation(swaggerGroup, servletRequest);
        }
    }
}

<properties>
    <swagger2.version>2.9.2</swagger2.version>
</properties>
<dependencies>
    <dependency>
        <groupId>io.springfox</groupId>
        <artifactId>springfox-swagger2</artifactId>
        <version>${swagger2.version}</version>
    </dependency>
    <dependency>
        <groupId>io.springfox</groupId>
        <artifactId>springfox-swagger-ui</artifactId>
        <version>${swagger2.version}</version>
    </dependency>
    <!-- 这里使用 swagger-bootstrap-ui 替代了原有丑陋的ui-->
    <dependency>
        <groupId>com.github.xiaoymin</groupId>
        <artifactId>swagger-bootstrap-ui</artifactId>
        <version>1.9.6</version>
    </dependency>
</dependencies>

swagger.show = false
api.base.package = com.xx.xxx.xxxx.controller
api.title = 管理系统接口文档
api.project.doc.url = https://docs.xxxx.com/pages?pageId=37647518
api.version = API V1.0
contact.name = backend-xxx
contact.url = https://gitlab.xxxx.com/xxx/backend-xxx
contact.email = xxx@xxxx.com

参考：

https://blog.didispace.com/springbootswagger2/

https://www.cnblogs.com/sujunyuan/p/12410264.html

https://blog.csdn.net/weixin_42260311/article/details/88661546