lg_backend/langguanApi/Service/LedgerService.cs

using langguanApi.Extensions.AutoDI;
using langguanApi.Model;
using langguanApi.Model.Entity;
using Mapster;
using MathNet.Numerics.Distributions;
using Npoi.Mapper;
using Org.BouncyCastle.Asn1.IsisMtt.X509;
using System.Linq.Expressions;

namespace langguanApi.Service
{
    [ServiceInjection(InjectionType.Transient)]
    /// <summary>
    /// Ledger service
    /// </summary>
    public class LedgerService : BaseService<Ledger>
    {
        public LedgerService(IConfiguration config) : base(config, nameof(Ledger))
        {
        }
        /// <summary>
        /// 新增数据
        /// </summary>
        /// <param name="input"></param>
        /// <returns></returns>
        public async Task AddLedger(LedgerDTO input)
        {
            var enity = input.Adapt<Ledger>();
            await base.CreateAsync(enity);
        }
        public async Task<object> HeaderCount()
        {
            return new { t1 = 100, t2 = 200, t3 = 300, t4 = 400 };
        }
        /// <summary>
        /// 导出数据
        /// </summary>
        /// <param name="start"></param>
        /// <param name="end"></param>
        /// <returns></returns>
        public async Task<byte[]> Export(DateTime? start, DateTime? end)
        {
            start = start.HasValue ? start.Value : DateTime.Now.AddDays(-7);
            end = end.HasValue ? end : DateTime.Now.AddDays(1);
            Expression<Func<Ledger, bool>> exp = filter =>
            filter.CreateDateTime >= start.Value && filter.CreateDateTime <= end.Value && filter.IsDelete == false;
            var list = (await base.GetListWithExp(exp)).ToList();
            var mapper = new Mapper();
            mapper.Map<Ledger>("进场时间", s => s.InTime)
            .Map<Ledger>("车牌号", s => s.CarNum)
            .Map<Ledger>("车型", s => s.CarModel)
            .Map<Ledger>("是否新能源", s => s.NewCar)
            .Map<Ledger>("燃油车", s => s.Emissions)
            .Map<Ledger>("出厂日间 ", s => s.OutTime)
             .Format<Ledger>("yyyy-MM-dd HH:mm:ss", s => s.InTime)
             .Format<Ledger>("yyyy-MM-dd HH:mm:ss", s => s.OutTime);
            MemoryStream stream = new MemoryStream();
            mapper.Save(stream, list, sheetName: "sheet1", leaveOpen: true);
            return stream.ToArray();
        }

        /// <summary>
        /// 分页取数据
        /// </summary>
        /// <param name="input"></param>
        /// <returns></returns>
        public async Task<object> GetPage(reqpage input)
        {
            Expression<Func<Ledger, bool>> exp = filter => filter.IsDelete == false;
            return await base.GetPager(new ReqPaing()
            {
                pageSize = input.pageSize,
                current = input.current
            }, exp);
        }
    }
}