ds8-solution-pro/ds-wms-service/DS.Module.ExcelModule/EPPlusService.cs

using DS.Module.Core;
using DS.Module.ExcelModule.Model;
using LanguageExt.ClassInstances;
using LanguageExt;
using Microsoft.AspNet.SignalR.Hubs;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.DependencyInjection;
using MiniExcelLibs;
using Newtonsoft.Json.Linq;
using SqlSugar;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using NPOI.SS.UserModel;
using OfficeOpenXml;
using System.Data;
using Spire.Xls;

namespace DS.Module.ExcelModule
{
    public class EPPlusService : IEPPlusService
    {
        private readonly IServiceProvider _serviceProvider;
        private static string GetString(object obj)
        {
            try
            {
                if (obj == null) return "";
                return obj.ToString();
            }
            catch (Exception ex)
            {
                return "";
            }
        }

        /// <summary>
        ///将指定的Excel的文件转换成DataTable （Excel的第一个sheet）
        /// </summary>
        /// <param name="fullFielPath">文件的绝对路径</param>
        /// <returns></returns>
        public DataTable WorksheetToTable(string fullFielPath, int SheetIndex = 0)
        {
            try
            {
                string[] PathNames = fullFielPath.Split(new string[] { @"/",@"\\", @"\" }, StringSplitOptions.RemoveEmptyEntries);
                var ExcelFileName = PathNames[PathNames.Length - 1];

                if (ExcelFileName.EndsWith(".xls"))
                {

                    var newExcelFileName = PathNames[PathNames.Length - 1].Replace(".xls", ".xlsx");

                    var pathhead = Path.GetDirectoryName(fullFielPath);

                    var _newFileFullname = pathhead + "/" + newExcelFileName;

                    Workbook book = new Workbook();
                    book.LoadFromFile(fullFielPath);
                    book.SaveToFile(_newFileFullname, ExcelVersion.Version2013);

                    fullFielPath = _newFileFullname;
                }

                ExcelPackage.LicenseContext = LicenseContext.NonCommercial;

                FileInfo existingFile = new FileInfo(fullFielPath);

                ExcelPackage package = new ExcelPackage(existingFile);


                ExcelWorksheet worksheet = package.Workbook.Worksheets[0];//选定 指定页

                return WorksheetToTable(worksheet);
            }
            catch (Exception e)
            {
                throw;
            }
        }

        public DataTable WorksheetToTable_NoTitle(string fullFielPath, int SheetIndex = 1)
        {
            try
            {
                string[] PathNames = fullFielPath.Split(new string[] { @"/" }, StringSplitOptions.RemoveEmptyEntries);
                var ExcelFileName = PathNames[PathNames.Length - 1];

                if (ExcelFileName.EndsWith(".xls"))
                {

                    var newExcelFileName = PathNames[PathNames.Length - 1].Replace(".xls", ".xlsx");

                    var _newFileFullname = Path.GetDirectoryName(fullFielPath) + "/" + newExcelFileName;

                    Workbook book = new Workbook();
                    book.LoadFromFile(fullFielPath);
                    book.SaveToFile(_newFileFullname, ExcelVersion.Version2013);

                    fullFielPath = _newFileFullname;
                }


                FileInfo existingFile = new FileInfo(fullFielPath);

                ExcelPackage package = new ExcelPackage(existingFile);
                ExcelWorksheet worksheet = package.Workbook.Worksheets[SheetIndex];//选定 指定页

                return WorksheetToTable_NoTitle(worksheet);
            }
            catch (Exception e)
            {
                throw;
            }
        }

        /// <summary>
        /// 将worksheet转成datatable
        /// </summary>
        /// <param name="worksheet">待处理的worksheet</param>
        /// <returns>返回处理后的datatable</returns>
        public DataTable WorksheetToTable(ExcelWorksheet worksheet)
        {
            //获取worksheet的行数
            int rows = worksheet.Dimension.End.Row;
            //获取worksheet的列数
            int cols = worksheet.Dimension.End.Column;

            DataTable dt = new DataTable(worksheet.Name);
            DataRow dr = null;
            for (int i = 1; i <= rows; i++)
            {
                if (i > 1)
                    dr = dt.Rows.Add();

                for (int j = 1; j <= cols; j++)
                {
                    //默认将第一行设置为datatable的标题
                    if (i == 1)
                        dt.Columns.Add(GetString(worksheet.Cells[i, j].Value));
                    //剩下的写入datatable
                    else
                        dr[j - 1] = GetString(worksheet.Cells[i, j].Value);
                }
            }
            return dt;
        }

        public DataTable WorksheetToTable_NoTitle(ExcelWorksheet worksheet)
        {
            //获取worksheet的行数
            int rows = worksheet.Dimension.End.Row;
            //获取worksheet的列数
            int cols = worksheet.Dimension.End.Column;

            DataTable dt = new DataTable(worksheet.Name);
            DataRow dr = null;
            for (int i = 1; i <= rows; i++)
            {
                //if (i > 1)
                dr = dt.Rows.Add();

                for (int j = 1; j <= cols; j++)
                {
                    //默认将第一行设置为datatable的标题
                    if (i == 1)
                    {
                        dt.Columns.Add(GetString(worksheet.Cells[i, j].Value));
                        dr[j - 1] = GetString(worksheet.Cells[i, j].Value);
                    }
                    //剩下的写入datatable
                    else
                    {
                        dr[j - 1] = GetString(worksheet.Cells[i, j].Value);
                    }
                }
            }
            return dt;
        }

    }
}