将Excel数据导入提取到单独的类中

2023-08-08 09:26:22 +08:00
parent bd2af7dccf
commit abb9663485
4 changed files with 86 additions and 171 deletions
--- a/WarehouseMgr/Tnb.WarehouseMgr/ExcelDataImportManager.cs
+++ b/WarehouseMgr/Tnb.WarehouseMgr/ExcelDataImportManager.cs
@@ -0,0 +1,85 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using JNPF.FriendlyException;
+using Microsoft.AspNetCore.Http;
+using NPOI.HSSF.UserModel;
+using NPOI.SS.UserModel;
+using NPOI.XSSF.UserModel;
+
+namespace Tnb.WarehouseMgr
+{
+    public class ExcelDataImportManager : BaseWareHouseService
+    {
+        /// <summary>
+        /// 解析Excel到内存
+        /// </summary>
+        /// <param name="file"></param>
+        /// <returns></returns>
+        protected Task<List<Dictionary<string, object>>> ImportExcelToMemory(IFormFile file)
+        {
+            int rowIndex = 1;
+            List<Dictionary<string, object>> dics = new();
+            IWorkbook? workbook = null;
+            try
+            {
+                using (Stream stream = file.OpenReadStream())
+                {
+                    // 2007版本
+                    if (file.Name.IndexOf(".xlsx") > 0)
+                    {
+                        workbook = new XSSFWorkbook(stream);
+                    }
+                    else if (file.Name.IndexOf(".xls") > 0)
+                    {
+                        workbook = new HSSFWorkbook(stream);
+                    }
+
+                    ISheet? sheet = workbook?.GetSheetAt(0);
+                    if (workbook == null || sheet == null) throw Oops.Bah("无导入数据");
+                    if (sheet?.LastRowNum <= 1) throw Oops.Bah("无导入数据");
+
+                    ICellStyle style = workbook.CreateCellStyle();
+                    IFont font = workbook.CreateFont();
+                    font.Color = IndexedColors.Black.Index; // 将字体颜色设置为红色
+                    style.SetFont(font);
+                    var nameRow = sheet?.GetRow(0);
+                    if (nameRow != null)
+                    {
+                        Dictionary<string, object> dic = new Dictionary<string, object>();
+                        List<string> columns = new List<string>();
+                        columns = nameRow.Cells.Select(x => x.StringCellValue).ToList();
+                        columns.ForEach(x =>
+                        {
+                            var strings = x.Split(new char[2] { '(', ')' }, StringSplitOptions.RemoveEmptyEntries);
+                            x = strings[1];
+                        });
+                        if (columns?.Count > 0)
+                        {
+                            for (rowIndex = 1; rowIndex <= sheet?.LastRowNum; rowIndex++)
+                            {
+                                var row = sheet?.GetRow(rowIndex);
+                                if (row != null)
+                                {
+                                    foreach (var col in columns)
+                                    {
+                                        ICell cell = row.GetCell(columns.IndexOf(col));
+                                        dic.Add(col, cell.StringCellValue);
+                                    }
+                                    dics.Add(dic);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            catch (Exception)
+            {
+                throw;
+            }
+            return Task.FromResult(dics);
+        }
+    }
+}