步驟一：
引入依賴

        <!--        swagger         -->
        <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>
        <dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-redis</artifactId>
        </dependency>
        <dependency>
            <groupId>com.github.xiaoymin</groupId>
            <artifactId>knife4j-spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>org.apache.shiro</groupId>
            <artifactId>shiro-core</artifactId>
            <version>1.2.4</version>
            <scope>compile</scope>
        </dependency>

步驟二：
編寫配置文件

@Configuration
@EnableSwagger2
public class SwaggerConfig {

    @Bean
    public Docket api() {
        return new Docket(DocumentationType.SWAGGER_2)
                .groupName("AdminApi")
                .enable(true)
                .apiInfo(apiInfo())
                .select()
                .apis(RequestHandlerSelectors.any())
                .paths(PathSelectors.any())
                .build().securitySchemes(security());
    }

    private ApiInfo apiInfo() {
        return new ApiInfoBuilder()
                .title("房淘")
                .description("xxx端開放文檔")
                .termsOfServiceUrl("http://101.35.186.202/:8082/swagger-ui.html")
                .build();
    }

    private List<ApiKey> security() {
        return Arrays.asList(
                new ApiKey("登錄驗證", "X-Mall-Admin-Token", "header")
        );
    }


}

步驟三：
如果配置了WebMvcConfigurer，需要配置攔截器放行靜態資源

    @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/");
        registry.addResourceHandler("doc.html")
                .addResourceLocations("classpath:/META-INF/resources/");
        registry.addResourceHandler("/favicon.ico")
                .addResourceLocations("classpath:/META-INF/resources/");
        registry.addResourceHandler("/webjars/**").
                addResourceLocations("classpath:/META-INF/resources/webjars/");
    }

步驟四：
啟動類添加如下注解

@EnableKnife4j

以上完成后，瀏覽器輸入http://localhost:xxxx/doc.html進入swagger頁面。