九. 配置swagger生成api文档

        <!--swagger-->
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger2</artifactId>
            <version>2.6.1</version>
        </dependency>
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger-ui</artifactId>
            <version>2.6.1</version>
        </dependency>

@Configuration
@EnableSwagger2
public class SwaggerConfig {

    private ApiInfo apiInfo(){
        return new ApiInfoBuilder()
                .title("online")
                .description("在线视频api接口文档")
                .termsOfServiceUrl("https://tanblog.cc")
                .version("1.0")
                .build();
    }
    @Bean
    public Docket createRestApi(){
        return new Docket(DocumentationType.SWAGGER_2)
                .apiInfo(apiInfo())
                .select()
                .apis(RequestHandlerSelectors.basePackage("cc.tanblog.online"))
                .paths(PathSelectors.regex(".*"))
                .build();
    }
}

    /**
     * 配置拦截器、拦截路径
     * 每次请求到拦截的路径，就会去执行拦截器中的方法
     */
    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        List<String> excludePath = new ArrayList<>();
        //排除拦截，除了注册登录(此时还没token)，其他都拦截
        excludePath.add("/swagger-ui.html");
        excludePath.add("/swagger-resources/**");
        excludePath.add("/v2/**");
        excludePath.add("/doc.html/**");
        excludePath.add("/webjars/**");
        excludePath.add("/usercontroller/login");  //登录

        registry.addInterceptor(tokenInterceptor)
                .addPathPatterns("/**")
                .excludePathPatterns(excludePath);
        WebMvcConfigurer.super.addInterceptors(registry);
    }