给header添加分页信息和orderby和数据塑形信息（在添加hateoas时也需要调用这个方法）

给header添加信息
思路：1. 使用IUrlHelper urlHelper的urlHelper.Link(routeName,object)方法创建连接（object为routeName使用时需要传入的参数集合的匿名方法，该方法中包含需要添加的各种信息，例如分页、排序、塑形）
例如

                urlHelper.Link("GetTouristRoutes", new
                {
                    fields = paramaters.Fields,
                    orderBy = paramaters.OrderBy,
                    keyword = paramaters.Keyword,
                    rating = paramaters.Rating,
                    pageNumber = paramaters2.PageNumber - 1,//-1是上一页，+1为下一页，否则为当前页
                    pageSize = paramaters2.PageSize
                })

2. 使用switch+ResourceUriType.PreviousPage、NextPage、CurrentPage的做法将link信息返回

        public static string GenerateTouristRouteResourceURL(
            this IUrlHelper urlHelper,//如果单独成方法就用static+传入IUrlHelper 的方式，如果是在已经注入了IUrlHelper 的Controller类内写这个方法，就直接private string，不需要这一行的参数就可以
            TouristRouteResourceParamaters paramaters,
            PaginationResourceParamaters paramaters2,
            ResourceUriType type
            )
        {
            return type switch
            {
                ResourceUriType.PreviousPage => urlHelper.Link("GetTouristRoutes", new
                {
                    fields = paramaters.Fields,
                    orderBy = paramaters.OrderBy,
                    keyword = paramaters.Keyword,
                    rating = paramaters.Rating,
                    pageNumber = paramaters2.PageNumber - 1,
                    pageSize = paramaters2.PageSize
                }),
                ResourceUriType.NextPage => urlHelper.Link("GetTouristRoutes", new
                {
                    fields = paramaters.Fields,
                    orderBy = paramaters.OrderBy,
                    keyword = paramaters.Keyword,
                    rating = paramaters.Rating,
                    pageNumber = paramaters2.PageNumber + 1,
                    pageSize = paramaters2.PageSize
                }),
                _ => urlHelper.Link("GetTouristRoutes", new
                {
                    fields = paramaters.Fields,
                    orderBy = paramaters.OrderBy,
                    keyword = paramaters.Keyword,
                    rating = paramaters.Rating,
                    pageNumber = paramaters2.PageNumber,
                    pageSize = paramaters2.PageSize
                })
            };
        }

3. 在返回Dto的时候调用并添加到Header中

            string previousPageLink = touristRoutesFromRepo.HasPrevious ? _urlHelper.GenerateTouristRouteResourceURL(paramaters, paramaters2, ResourceUriType.PreviousPage) : null;
            string nextPageLink = touristRoutesFromRepo.HasNext ? _urlHelper.GenerateTouristRouteResourceURL(paramaters, paramaters2, ResourceUriType.NextPage) : null;

            // x-pagination
            var paginationMetadata = new
            {
                previousPageLink,
                nextPageLink,
                totalCount = touristRoutesFromRepo.TotalCount,
                pageSize = touristRoutesFromRepo.PageSize,
                currentPage = touristRoutesFromRepo.CurrentPage,
                totalPages = touristRoutesFromRepo.TotalPages
            };

            Response.Headers.Add("x-pagination", Newtonsoft.Json.JsonConvert.SerializeObject(paginationMetadata));