import com.google.common.base.Predicate;
import com.google.common.base.Function;
import com.google.common.base.Optional;

@Bean
   public Docket createRestApi(){
      return new Docket(DocumentationType.SWAGGER_2)
            .apiInfo(apiInfo())
            .select()
//          .apis(RequestHandlerSelectors.basePackage("com.crcc.subaccess.service.controller"))
            .apis(basePackage("com.crcc.subaccess.service.controller;com.crcc.subaccess.common.controller"))
            //.apis(RequestHandlerSelectors.basePackage("com.crcc.subaccess.common.controller"))
            .paths(PathSelectors.any())
            .build().globalOperationParameters(this.getParameterList());
   }
   private ApiInfo apiInfo() {
      return new ApiInfoBuilder()
            .title("后台服务系统")
            .description("后台公共服务模块")
            .contact("macro")
            .version("1.0")
            .build();
   }
//添加header

 　　private List<Parameter> getParameterList(){
      ParameterBuilder tokenPar = new ParameterBuilder();
      List<Parameter> pars = new ArrayList<>();
      tokenPar.name("Authorization").description("令牌").modelRef(new ModelRef("string"))
            .parameterType("header").required(false).build();
      pars.add(tokenPar.build());
      return pars;

   }

//添加多个扫描包
   public static Predicate<RequestHandler> basePackage(final String basePackage) {
      return input -> declaringClass(input).transform(handlerPackage(basePackage)).or(true);
   }

   private static Function<Class<?>, Boolean> handlerPackage(final String basePackage) {
      return input -> {
         // 循环判断匹配
         for (String strPackage : basePackage.split(";")) {
            boolean isMatch = input.getPackage().getName().startsWith(strPackage);
            if (isMatch) {
               return true;
            }
         }
         return false;
      };
   }

   private static Optional<? extends Class<?>> declaringClass(RequestHandler input) {
      return Optional.fromNullable(input.declaringClass());
   }