using NPOI;
using NPOI.HSSF.UserModel; //2003版本
using NPOI.XSSF.UserModel; //2007版本
using NPOI.SS.UserModel;
public string ConvertExcelToJsonString() { try {
string excelName = "data.xlsx"; string sheet = "Sheet3"; string filePath = HttpContext.Current.Server.MapPath(String.Format("~/App_Data/{0}", excelName)); //HSSFWorkbook wb = new HSSFWorkbook(new FileStream(filePath, FileMode.Open, FileAccess.Read)); //HSSFSheet sht = (HSSFSheet)wb.GetSheet(sheet); 如果是2003 则用HSS开头的对象。 FileStream file = new FileStream(filePath, FileMode.Open, FileAccess.Read); XSSFWorkbook xworkbook = new XSSFWorkbook(file); XSSFSheet xsheet = (XSSFSheet)xworkbook.GetSheet(sheet); int rowsCount = xsheet.PhysicalNumberOfRows; //取行Excel的最大行数 int colsCount = xsheet.GetRow(0).PhysicalNumberOfCells;//取得Excel的列数 StringBuilder excelJson = new StringBuilder(); //StringBuilder table = new StringBuilder(); int colSpan; int rowSpan; bool isByRowMerged; excelJson.Append("["); //table.Append("<table border='1px'>"); for (int rowIndex = 0; rowIndex < rowsCount; rowIndex++) { if (rowIndex > 0) { excelJson.Append(","); } excelJson.Append("["); for (int colIndex = 0; colIndex < colsCount; colIndex++) { //获取Table某个TD合并的列数和行数等信息。与Excel中对应Cell的合并行数和列数一致。 GetTdMergedInfo(xsheet, rowIndex, colIndex, out colSpan, out rowSpan, out isByRowMerged); //被合并的行或列不输出的处理方式不一样 //如果已经被 行 合并包含进去了就不输出TD了。 if (isByRowMerged) { continue; } excelJson.Append("{"); excelJson.Append(string.Format("Text:'{0}'", xsheet.GetRow(rowIndex).GetCell(colIndex))); excelJson.Append(string.Format(",ColSpan:'{0}'",colSpan)); excelJson.Append(string.Format(",RowSpan:'{0}'",rowSpan)); excelJson.Append(",Width:''"); excelJson.Append(",Align:'center'"); excelJson.Append(",Index:''"); excelJson.Append("},"); //列被合并之后此行将少输出colSpan-1个TD。 if (colSpan > 1) colIndex += colSpan - 1; } excelJson.Remove(excelJson.Length-1,1); excelJson.Append("]"); } excelJson.Append("]"); return excelJson.toString(); } catch (Exception ex) { return null; } }
/// <summary> /// 获取Table某个TD合并的列数和行数等信息。与Excel中对应Cell的合并行数和列数一致。 /// </summary> /// <param name="rowIndex">行号</param> /// <param name="colIndex">列号</param> /// <param name="colspan">TD中需要合并的行数</param> /// <param name="rowspan">TD中需要合并的列数</param> /// <param name="isByRowMerged">此单元格是否被某个行合并包含在内。如果被包含在内，将不输出TD。</param> /// <returns></returns> private void GetTdMergedInfo(XSSFSheet xsheet, int rowIndex, int colIndex, out int colspan, out int rowspan, out bool isByRowMerged) { colspan = 1; rowspan = 1; isByRowMerged = false; int regionsCuont = xsheet.NumMergedRegions;//取得合并单元格的个数 //Region region; for (int i = 0; i < regionsCuont; i++) { //region = xsheet.GetMergedRegionAt(i); 此方法为1.2版本，高版本已去掉 CellRangeAddress range = xsheet.GetMergedRegion(i);//取得第i个合并单元格的跨越范围 xsheet.IsMergedRegion(range); //region = xsheet.GetMergedRegion(i); if (range.FirstRow == rowIndex && range.FirstColumn == colIndex) { colspan = range.LastColumn - range.FirstColumn + 1; rowspan = range.LastRow - range.FirstRow + 1; return; } else if (rowIndex > range.FirstRow && rowIndex <= range.LastRow && colIndex >= range.FirstColumn && colIndex <= range.LastColumn) { isByRowMerged = true; } } }
function ExcelDataBind(data) { var data = result.Data.toJSON() //此处拿到后台Json字符串 var tableObj= $('<table border="1" width="100%"></table>'); var theadObj = $("<thead></thead>"); var tbodyobj = $("<tbody></tbody>"); for (var i = 0; i < data.length; i++) { var trHtml = '<tr>'; //以下特殊业务需要，请参考自己逻辑修改 for (var j = 0; j < data[i].length; j++) { var tdType = data[i][j].Index == 1 ? "th" : "td"; var colspan = data[i][j].ColSpan == 1 ? "" : " colspan=" + data[i][j].ColSpan; var rowspan = data[i][j].RowSpan == 1 ? "" : " rowspan=" + data[i][j].RowSpan;
trHtml += '<' + tdType + colspan + rowspan + ' width=' + data[i][j].Width + ' align="' + data[i][j].Align + '">' + data[i][j].Text + '</' + tdType + '>';
}
trHtml += '</tr>'; if (data[i][0].Index == 1) {
theadObj.append(trHtml);
}else {
tbodyobj.append(trHtml);
}
}
tableObj.append(theadObj).append(tbodyobj);
}
以上功能是将 excel 里的数据转化成json格式（如下），因为还有别的用处，所以就没直接转换成Html的table。如果想直接转换成Table，请参考官网例子
[[{Text:'日期',ColSpan:'1',RowSpan:'2',Width:'',Align:'center',Index:''},{Text:'买入',ColSpan:'3',RowSpan:'1',Width:'',Align:'center',Index:''}],[{Text:'买入额（万元）',ColSpan:'1',RowSpan:'1',Width:'',Align:'center',Index:''},{Text:'偿还额（万元）',ColSpan:'1',RowSpan:'1',Width:'',Align:'center',Index:''},{Text:'净买入额（万元）',ColSpan:'1',RowSpan:'1',Width:'',Align:'center',Index:''}],[{Text:'30-一月-2014',ColSpan:'1',RowSpan:'1',Width:'',Align:'center',Index:''},{Text:'67644.71',ColSpan:'1',RowSpan:'1',Width:'',Align:'center',Index:''},{Text:'58602.77',ColSpan:'1',RowSpan:'1',Width:'',Align:'center',Index:''},{Text:'9041.94',ColSpan:'1',RowSpan:'1',Width:'',Align:'center',Index:''}],[{Text:'31-十二月-2013',ColSpan:'1',RowSpan:'1',Width:'',Align:'center',Index:''},{Text:'520660.88',ColSpan:'1',RowSpan:'1',Width:'',Align:'center',Index:''},{Text:'449425.22',ColSpan:'1',RowSpan:'1',Width:'',Align:'center',Index:''},{Text:'71235.66',ColSpan:'1',RowSpan:'1',Width:'',Align:'center',Index:''}],[{Text:'29-十一月-2013',ColSpan:'1',RowSpan:'1',Width:'',Align:'center',Index:''},{Text:'515912.92',ColSpan:'1',RowSpan:'1',Width:'',Align:'center',Index:''},{Text:'525626.82',ColSpan:'1',RowSpan:'1',Width:'',Align:'center',Index:''},{Text:'-9713.91',ColSpan:'1',RowSpan:'1',Width:'',Align:'center',Index:''}],[{Text:'31-十月-2013',ColSpan:'1',RowSpan:'1',Width:'',Align:'center',Index:''},{Text:'758822.25',ColSpan:'1',RowSpan:'1',Width:'',Align:'center',Index:''},{Text:'738848.47',ColSpan:'1',RowSpan:'1',Width:'',Align:'center',Index:''},{Text:'19973.79',ColSpan:'1',RowSpan:'1',Width:'',Align:'center',Index:''}]]