共享一个MVC通过NPOI导出excel的通用方法

 public static System.IO.MemoryStream ExportExcel<T>(string title, List<T> objList, params string[] excelPropertyNames)
 {
     NPOI.SS.UserModel.IWorkbook workbook = new NPOI.HSSF.UserModel.HSSFWorkbook();
     NPOI.SS.UserModel.ISheet sheet = workbook.CreateSheet("Sheet1");
     NPOI.SS.UserModel.IRow row;
     NPOI.SS.UserModel.ICell cell;
     NPOI.SS.UserModel.ICellStyle cellStyle;

     int rowNum = ;
     if (!string.IsNullOrEmpty(title))
     {
         #region 标题
         #region 标题样式
         cellStyle = workbook.CreateCellStyle();
         cellStyle.Alignment = NPOI.SS.UserModel.HorizontalAlignment.Center;
         cellStyle.VerticalAlignment = NPOI.SS.UserModel.VerticalAlignment.Center;//垂直居中有问题
         NPOI.SS.UserModel.IFont font = workbook.CreateFont();
         font.FontHeightInPoints = ;
         cellStyle.SetFont(font);
         #endregion
         row = sheet.CreateRow(rowNum);
         cell = row.CreateCell(, NPOI.SS.UserModel.CellType.String);
         cell.SetCellValue(title);
         cell.CellStyle = cellStyle;
         sheet.AddMergedRegion(new NPOI.SS.Util.CellRangeAddress(, , , excelPropertyNames.Length >  ? excelPropertyNames.Length -  : ));
         rowNum++;
         #endregion
     }

     if (objList.Count > )
     {
         Type type = objList[].GetType();
         if (type != null)
         {
             System.Reflection.PropertyInfo[] properties = type.GetProperties();
             if (properties.Length > )
             {
                 #region 表头
                 #region 表头样式
                 cellStyle = workbook.CreateCellStyle();
                 cellStyle.Alignment = NPOI.SS.UserModel.HorizontalAlignment.Center;
                 #endregion
                 if (excelPropertyNames.Length > )
                 {
                     row = sheet.CreateRow(rowNum);
                     int count = ;
                     for (int m = ; m < properties.Length; m++)
                     {
                         if (excelPropertyNames.Contains(properties[m].Name))
                         {
                             cell = row.CreateCell(count, NPOI.SS.UserModel.CellType.String);
                             string displayName = GetDisplayNameByPropertyName(properties[m].Name);
                             cell.SetCellValue(displayName == null ? "" : displayName);
                             cell.CellStyle = cellStyle;
                             count++;
                         }
                     }
                     rowNum++;
                 }
                 #endregion

                 #region 表体
                 if (excelPropertyNames.Length > )
                 {
                     for (int i = ; i < objList.Count; i++)
                     {
                         row = sheet.CreateRow(i + rowNum);
                         int count = ;
                         for (int j = ; j < properties.Length; j++)
                         {
                             if (excelPropertyNames.Contains(properties[j].Name))
                             {
                                 cell = row.CreateCell(count);
                                 object obj = properties[j].GetValue(objList[i]);
                                 cell.SetCellValue(obj == null ? "" : obj.ToString());
                                 cell.CellStyle = cellStyle;
                                 count++;
                             }
                         }
                     }
                 }
                 #endregion
             }
         }
     }
     System.IO.MemoryStream ms = new System.IO.MemoryStream();
     workbook.Write(ms);
     return ms;
 }

 public static string GetDisplayNameByPropertyName(string propertyName)
 {
     string result = null;
     foreach (KeyValuePair<string,string> dic in NameDictionary())
     {
         if (dic.Key == propertyName)
         {
             result = dic.Value;
         }
         continue;
     }
     return result;
 }

 public static Dictionary<string, string> NameDictionary()
 {
     Dictionary<string, string> dic = new Dictionary<string, string>();
     dic.Add("AdminID", "编号");

     dic.Add("AdminName", "用户名");

     dic.Add("AdminMobile", "手机号");

     dic.Add("RealName", "真实姓名");

     return dic;
 }

调用很简单

 public ActionResult Test()
 {
     int totalCount;
     List<AdminModel> adminModelList = adminBLL.GetPageList(, , out totalCount);
     if (adminModelList == null)
     {
         adminModelList = new List<AdminModel>();
     }
     return File(ExcelHelper.ExportExcel<AdminModel>("表头", adminModelList, "AdminID", "AdminName", "AdminMobile", "RealName").ToArray(), "application/vnd.ms-excel", "工作簿.xls");
 }