DEMOMySql/MicroServices/Business/Business.Application/ResourceExamineManagement/SerialNumberAppService.cs

using Bussiness.Model.SystemData;
using System;
using System.Text.RegularExpressions;
using Volo.Abp.Application.Services;
using Volo.Abp.Domain.Repositories;

namespace Business.ResourceExamineManagement
{
    public class SerialNumberAppService : ApplicationService, ISerialNumberAppService
    {
        private readonly IRepository<sys_serial_number, long> _sys_serial_number;

        public SerialNumberAppService(IRepository<sys_serial_number, long> sys_serial_number) {
            _sys_serial_number = sys_serial_number;
        }

        /// <summary>
        /// 流水号生成
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        /// <exception cref="NotImplementedException"></exception>
        public string GetSerialNumber(long id)
        {
            var model = Get(id);
            if (model == null)
            {
                return string.Empty;
            }
            int max = model.current_number + 1;
            var date = DateTime.Now;
            var lastDate = model.last_time;
            switch (model.number_type)
            {
                case 1: //年流水
                    if (date.Year > lastDate.Year)
                    {
                        max = 1;
                    }
                    break;
                case 2: //月流水
                    if (date.Year > lastDate.Year || date.Month > lastDate.Month)
                    {
                        max = 1;
                    }
                    break;
                case 3: //日流水
                    if (date.Year > lastDate.Year || date.Month > lastDate.Month || date.Day > lastDate.Day)
                    {
                        max = 1;
                    }
                    break;
            }
            model.last_time = date;
            model.current_number = max;
            string number = max.ToString().PadLeft(model.number_size, '0');
            string sn = model.format;
            sn = Replace(sn);
            if (sn.Contains("{number}"))
            {
                sn = Regex.Replace(sn, "{number}", number);
            }
            Update(model);
            return sn;
        }

        /// <summary>
        /// 获取流水号规则配置信息
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        private sys_serial_number Get(long id)
        {
            return _sys_serial_number.FindAsync(id).Result;
        }

        /// <summary>
        /// 替换通配符
        /// </summary>
        private string Replace(string str)
        {
            if (str.Contains("{DateTime<"))
            {
                string key = str.Substring(str.IndexOf("{DateTime<") + 10);
                string key1 = key.Substring(0, key.IndexOf(">}"));
                if (!string.IsNullOrWhiteSpace(key1))
                {
                    string newChar = DateTime.Now.ToString(key1);
                    string old = "{DateTime<" + key1 + ">}";
                    return str.Replace(old, newChar);
                }
            }
            return str;
        }

        public void Update(sys_serial_number model)
        {
            _sys_serial_number.UpdateAsync(model);
        }

    }
}