content: package cn.datax.gateway.config;
  
  import lombok.AllArgsConstructor;
  import org.springframework.cloud.gateway.config.GatewayProperties;
  import org.springframework.cloud.gateway.route.RouteLocator;
  import org.springframework.cloud.gateway.support.NameUtils;
  import org.springframework.context.annotation.Primary;
  import org.springframework.stereotype.Component;
  import springfox.documentation.swagger.web.SwaggerResource;
  import springfox.documentation.swagger.web.SwaggerResourcesProvider;
  
  import java.util.ArrayList;
  import java.util.List;
  
  @Component
  @Primary
  @AllArgsConstructor
  public class SwaggerResourceConfig implements SwaggerResourcesProvider {
  
      public static final String API_URI = "/v2/api-docs";
      private final RouteLocator routeLocator;
      private final GatewayProperties gatewayProperties;
  
      @Override
      public List<SwaggerResource> get() {
          List<SwaggerResource> resources = new ArrayList<>();
          List<String> routes = new ArrayList<>();
          //取出gateway的route
          routeLocator.getRoutes().subscribe(route -> routes.add(route.getId()));
          //结合配置的route-路径(Path)，和route过滤，只获取有效的route节点
          gatewayProperties.getRoutes().stream().filter(routeDefinition -> routes.contains(routeDefinition.getId()))
                  .forEach(routeDefinition -> {
                      routeDefinition.getPredicates().stream()
                              .filter(predicateDefinition -> ("Path").equalsIgnoreCase(predicateDefinition.getName()))
                              .filter(predicateDefinition -> !"system".equalsIgnoreCase(routeDefinition.getId()) ||
                                      !"service-data-api-mapping".equalsIgnoreCase(routeDefinition.getId()) ||
                                      !"service-data-console".equalsIgnoreCase(routeDefinition.getId()))
                              .forEach(predicateDefinition -> resources.add(swaggerResource(routeDefinition.getId(),
                                      predicateDefinition.getArgs().get(NameUtils.GENERATED_NAME_PREFIX + "0")
                                              .replace("/**", API_URI))));
                  });
          return resources;
      }
  
      private SwaggerResource swaggerResource(String name, String location) {
          SwaggerResource swaggerResource = new SwaggerResource();
          swaggerResource.setName(name);
          swaggerResource.setLocation(location);
          swaggerResource.setSwaggerVersion("2.0");
          return swaggerResource;
      }
  }
  