• MVC3 使用NPOI导出excel

    NPOI的官方教程：http://tonyqus.sinaapp.com/tutorial

    此次项目中使用的是NPOI的1.25版本，项目是MVC3，在这里只贴上controller部分的代码：

    1 using NPOI.HSSF.UserModel;
2 using NPOI.SS.UserModel;

    用户可以在网站上订票，有些景区不具备网络验票的条件，需要我们将订票用户以传真的方式发送给景区。故做此导出功能：分为导出单个景区和一次导出全部景区。

      1  /// <summary>
  2         /// //导出excel
  3         /// </summary>
  4         /// <param name="id">联盟ID</param>
  5         /// <param name="param">游玩时间</param>
  6         /// <returns></returns>
  7         public ActionResult CreateExcel(string id,string param)
  8         {
  9             try
 10             {
 11                 if (id == "全部")
 12                 {
 13                     string[] s = param.Split('-');
 14                     DateTime dt = new DateTime(int.Parse(s[0]), int.Parse(s[1]), int.Parse(s[2]));
 15                     List<TSceneryLeagueExportFax> list = tsceneryLeagueBll.getFaxScenery(dt);
 16 
 17                     DataSet tempDS = new DataSet();
 18                     foreach (TSceneryLeagueExportFax tslef in list)
 19                     {
 20                         if (tslef.SceneryBookNum == 0)
 21                             continue;
 22                         List<TSceneryLeagueExportFax> sceneryleague = tsceneryLeagueBll.getFaxSceneryDetail(tslef.LMID, dt);
 23                         DataTable dtabel = new DataTable();
 24                         dtabel.TableName = sceneryleague[0].SceneryName;
 25                         dtabel.Columns.Add("预订人");
 26                         //dtabel.Columns.Add("电话");
 27                         dtabel.Columns.Add("验证码");
 28                         dtabel.Columns.Add("票种");
 29                         dtabel.Columns.Add("张数");
 30                         dtabel.Columns.Add("单价");
 31                         dtabel.Columns.Add("总价");
 32                         dtabel.Columns.Add("游玩时间");
 33 
 34                         foreach (TSceneryLeagueExportFax tlef in sceneryleague)
 35                         {
 36                             if (tlef.TicketsNum == 0)
 37                                 continue;
 38                             IList TempList = new ArrayList();
 39                             TempList.Add(tlef.TakeTicketPerson);
 40                             //TempList.Add(tlef.PhoneCode);
 41                             TempList.Add(tlef.VerifyCode);
 42                             TempList.Add(tlef.TicketName);
 43                             TempList.Add(tlef.TicketsNum);
 44                             TempList.Add(tlef.DiscountPrice);
 45                             TempList.Add(tlef.allMonery);
 46                             TempList.Add(tlef.DateOfVisit.ToString("yyyy-MM-dd"));
 47 
 48                             object[] itm = new object[7];
 49                             //遍历ArrayList向object[]里放数据
 50                             for (int j = 0; j < TempList.Count; j++)
 51                             {
 52 
 53                                 itm.SetValue(TempList[j], j);
 54                             }
 55                             //将object[]的内容放入DataTable
 56                             dtabel.LoadDataRow(itm, true);
 57 
 58                         }
 59                         tempDS.Tables.Add(dtabel);
 60                     }
 61                     return File(ExportExecel(tempDS), "application/vnd.ms-excel", "全部景区联盟传真" + param + ".xls");
 62                 }
 63                 else
 64                 {
 65                     string[] s = param.Split('-');
 66                     DateTime dt = new DateTime(int.Parse(s[0]), int.Parse(s[1]), int.Parse(s[2]));
 67                     List<TSceneryLeagueExportFax> list = tsceneryLeagueBll.getFaxSceneryDetail(int.Parse(id), dt);
 68                     TSceneryLeague tsigle = tsceneryLeagueBll.GetModel(int.Parse(id));//用于获取景区名称，在导出文件时显示
 69                     DataSet tempDS = new DataSet();
 70                     if (list.Count > 0)
 71                     {
 72                         DataTable dtabel = new DataTable();
 73                         dtabel.TableName = list[0].SceneryName;
 74                         dtabel.Columns.Add("预订人");
 75                         //dtabel.Columns.Add("电话");
 76                         dtabel.Columns.Add("验证码");
 77                         dtabel.Columns.Add("票种");
 78                         dtabel.Columns.Add("张数");
 79                         dtabel.Columns.Add("单价");
 80                         dtabel.Columns.Add("总价");
 81                         dtabel.Columns.Add("游玩时间");
 82 
 83                         foreach (TSceneryLeagueExportFax tlef in list)
 84                         {
 85                             if (tlef.TicketsNum == 0)
 86                                 continue;
 87                             IList TempList = new ArrayList();
 88                             TempList.Add(tlef.TakeTicketPerson);
 89                             //TempList.Add(tlef.PhoneCode);
 90                             TempList.Add(tlef.VerifyCode);
 91                             TempList.Add(tlef.TicketName);
 92                             TempList.Add(tlef.TicketsNum);
 93                             TempList.Add(tlef.DiscountPrice);
 94                             TempList.Add(tlef.allMonery);
 95                             TempList.Add(tlef.DateOfVisit.ToString("yyyy-MM-dd"));
 96 
 97                             object[] itm = new object[7];
 98                             //遍历ArrayList向object[]里放数据
 99                             for (int j = 0; j < TempList.Count; j++)
100                             {
101 
102                                 itm.SetValue(TempList[j], j);
103                             }
104                             //将object[]的内容放入DataTable
105                             dtabel.LoadDataRow(itm, true);
106 
107                         }
108                         tempDS.Tables.Add(dtabel);
109 
110                     }
111                     
112 
113                     
114                     return File(ExportExecel(tempDS), "application/vnd.ms-excel", tsigle.SceneryName+param+".xls");
115                 }
116             }
117             catch (Exception ex)
118             {
119                 
120                 throw ex;
121             }
122         }

    在上边的方法中调用如下的一个方法，此方法可以略做修改用于其他功能的导出

      1 public byte[] ExportExecel(DataSet tempDs)
  2         {
  3 
  4             HSSFWorkbook book = new HSSFWorkbook();
  5 
  6             //普通单元格样式
  7             ICellStyle cellstyle = book.CreateCellStyle();
  8             cellstyle.Alignment = HorizontalAlignment.CENTER; //水平居中
  9             cellstyle.VerticalAlignment = VerticalAlignment.CENTER;//垂直居中
 10             cellstyle.WrapText = true; //自动换行
 11             IFont cellfont = book.CreateFont();
 12             cellfont.FontHeightInPoints = 11; //11号字体
 13             cellstyle.SetFont(cellfont);
 14 
 15             //头部单元格样式
 16             ICellStyle cellheadstyle = book.CreateCellStyle();
 17             cellheadstyle.Alignment = HorizontalAlignment.CENTER;
 18             cellheadstyle.VerticalAlignment = VerticalAlignment.CENTER;
 19             IFont cellheadfont = book.CreateFont();
 20             cellheadfont.FontHeightInPoints = 11;
 21             cellheadfont.Boldweight =(short)FontBoldWeight.BOLD; //字体加粗
 22             cellheadstyle.SetFont(cellheadfont);
 23 
 24 
 25             //标题单元格样式
 26             ICellStyle titlestyle = book.CreateCellStyle();
 27             titlestyle.Alignment = HorizontalAlignment.CENTER;
 28             titlestyle.VerticalAlignment = VerticalAlignment.CENTER;
 29             IFont titlefont = book.CreateFont();
 30             titlefont.FontHeightInPoints = 14;
 31             titlefont.Boldweight = (short)FontBoldWeight.BOLD; //字体加粗
 32             titlestyle.SetFont(titlefont);
 33             
 34  
 35             int count = tempDs.Tables.Count;
 36             for (int i = 0; i < count; i++)
 37             {
 38                 DataTable dt = tempDs.Tables[i];
 39                 ISheet sheet = book.CreateSheet(dt.TableName);
 40                 sheet.IsPrintGridlines = true; //打印时显示网格线
 41                 sheet.DisplayGridlines = true;//查看时显示网格线
 42                 //sheet.DefaultRowHeightInPoints = 25; 这种默认设置不起作用
 43                 sheet.SetColumnWidth(0, 20 * 256);//预订人宽度                
 44                 sheet.SetColumnWidth(2, 25 * 256);//票种宽度
 45                 sheet.SetColumnWidth(6, 13 * 256);//游玩时间宽度
 46 
 47                 int rowIndex = 3;
 48                 int colIndex = 0;
 49 
 50 
 51 
 52                 IRow row = sheet.CreateRow(0);
 53                 row.HeightInPoints = 30;
 54                 ICell title = row.CreateCell(0);
 55                 string titlevalue = dt.TableName + dt.Rows[0]["游玩时间"]+"订票详情";
 56                 title.SetCellValue(titlevalue);
 57                 title.CellStyle = titlestyle;
 58                 sheet.AddMergedRegion(new NPOI.SS.Util.CellRangeAddress(0,0,0,6));
 59 
 60                 row = sheet.CreateRow(1);
 61                 row.HeightInPoints = 25;
 62                 ICell subtitle = row.CreateCell(0);
 63                 string subtitlevalue = "来自：南北游旅行网  电话：0311-83052118  传真：0311-83058268  移动客服：18633827863";
 64                 subtitle.SetCellValue(subtitlevalue);
 65                 subtitle.CellStyle = cellstyle;
 66                 sheet.AddMergedRegion(new NPOI.SS.Util.CellRangeAddress(1, 1, 0, 6));
 67 
 68                 
 69 
 70                 //设置表头
 71                 row = sheet.CreateRow(2);
 72                 row.HeightInPoints = 25;
 73                 foreach (DataColumn col in dt.Columns)
 74                 {
 75 
 76                     ICell cell = row.CreateCell(colIndex);
 77                     cell.SetCellValue(col.ColumnName);
 78                     cell.CellStyle = cellheadstyle;
 79                     
 80                     colIndex++;
 81                 }
 82 
 83                 //导入数据行
 84                 foreach (DataRow rows in dt.Rows)
 85                 {
 86 
 87                     colIndex = 0;
 88                     row = sheet.CreateRow(rowIndex);
 89                     string TicketType = rows["票种"].ToString();
 90                     if (TicketType.Length <= 12)
 91                     {
 92                         row.HeightInPoints = 25;
 93                     }
 94                     else
 95                     {
 96                         row.HeightInPoints = 50;
 97                     }
 98                     foreach (DataColumn col in dt.Columns)
 99                     {
100                         ICell  cell = row.CreateCell(colIndex);
101                         cell.SetCellValue(rows[col.ColumnName].ToString());
102                         cell.CellStyle = cellstyle;
103                         colIndex++;
104                     }
105                     rowIndex++;
106                 }
107 
108             }
109             
110 
111             // 写入到客户端  
112             System.IO.MemoryStream ms = new System.IO.MemoryStream();
113             book.Write(ms);
114             byte[] b = ms.ToArray();
115             book = null;
116             ms.Close();
117             ms.Dispose();
118             return b;
119         }

    截图：
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  • 原文地址：https://www.cnblogs.com/zhouxiuquan/p/3245578.html
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